Parker v.Zoning Commision ( 2022 )


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    ROBERT PARKER ET AL. v. ZONING COMMISSION
    OF THE TOWN OF WASHINGTON ET AL.
    (AC 44130)
    Elgo, Moll and Sheldon, Js.
    Syllabus
    The plaintiffs, owners of real property located within 100 feet of that of the
    defendant W Co., appealed to the Superior Court from the decision of
    the defendant Zoning Commission of the Town of Washington granting
    W Co.’s application to modify a special permit for the construction of
    an inn. W Co.’s predecessor in title, W, had sought a special permit in
    2008 to construct the inn. The commission denied the request in 2011,
    and W appealed to the Superior Court. While the appeal was pending,
    the commission granted W a special permit to operate a school on the
    property. The Superior Court thereafter upheld the commission’s denial
    of the request for the special permit to construct the inn, and W appealed
    to this court. While W’s appeal was pending before this court, the parties
    in that appeal entered into a settlement agreement in 2013 that permitted
    W to pursue construction of the inn, known as the main building, and
    associated appurtenances. The settlement agreement also contained
    sixteen conditions regarding the construction, and W agreed to surrender
    the special permit approval that it had obtained for a school. At a special
    meeting in January, 2013, the commission approved the settlement agree-
    ment and incorporated into it a 2012 revision of an architect’s site
    plan for the inn, two architectural renderings and conditions that were
    contained in the special permit approval for the school. Thereafter, a
    motion for approval of the settlement agreement was filed with the
    Superior Court pursuant to statute (§ 8-8 (n)). The court approved the
    settlement agreement, thereby memorializing W’s ability to construct
    the inn. W Co. then filed its application with the commission to modify
    the special permit that was approved in the commission’s special meet-
    ing. The application was accompanied by, inter alia, a new site develop-
    ment plan for the inn that was revised to 2018. The commission con-
    ducted a hearing during which members of the public opined that the
    2018 site development plan constituted an expansion of the nonconform-
    ing structure that was memorialized in the 2012 plan and approved as
    part of the settlement agreement. The commission thereafter approved
    W Co.’s application to modify the special permit in accordance with the
    2018 site development plan and attached twenty-five conditions to that
    approval. The plaintiff property owners appealed to the Superior Court,
    claiming, inter alia, that the commission improperly authorized the
    expansion of a nonconforming structure and a nonconforming use in
    contravention of the zoning regulations. The court rejected that con-
    tention and dismissed the plaintiffs’ appeal, concluding that the commis-
    sion had substantial evidence before it to approve and modify W Co.’s
    application. On the granting of certification, the plaintiffs appealed to
    this court. Held:
    1. The plaintiffs could not prevail on their claim that the Superior Court
    improperly concluded that the commission’s approval of W Co.’s special
    permit modification did not constitute an impermissible expansion of
    a nonconforming structure:
    a. Although the main building depicted in the 2012 site plan did not
    satisfy the common-law standard for a nonconforming use, insofar as it
    did not comply with the lot line setback requirements in the zoning
    regulations and was not in existence in 2012 when it was merely a
    contemplated use of the property, because the commission and the court
    ratified the settlement agreement and all statutory requirements were
    satisfied, the proposed main building constituted a lawful, albeit noncon-
    forming, structure that could not be expanded or enlarged within the
    setback area in the absence of a variance from the town’s Zoning Board
    of Appeals.
    b. The plaintiffs’ claim that the commission authorized an impermissible
    vertical expansion of the nonconforming main building was unavailing,
    notwithstanding the plaintiffs’ assertion that a height limitation could
    be found in W’s proposed plan for the school and sewage discharge
    plans W had submitted for state approval: the Superior Court properly
    determined that the commission did not authorize an impermissible
    expansion when it approved W Co.’s special permit modification, as the
    plans for the school and sewer discharge were not part of the settlement
    agreement, which described the 2012 site development as the complete
    site plan, and the settlement agreement did not specify a height limitation,
    which was never discussed at the special meeting; moreover, the architec-
    tural renderings did not contain dimensions or numerical specifications,
    the record contained no indication that the commission considered those
    renderings as accurate depictions of the height of the proposed main
    building, and the commission was entitled to credit testimony that the
    architectural renderings were offered merely for illustrative purposes
    and that the parties to the settlement agreement did not undertake to
    create a comprehensive agreement; furthermore, contrary to the plain-
    tiffs’ contention, the commission did not authorize an expansion of the
    floor area or volume of the main building, as the settlement agreement
    did not contain a restriction as to the floor area or volume of the main
    building, and the commission members who approved W Co.’s applica-
    tion to modify the special permit in 2018 and were members of the
    commission in 2013 when it approved the settlement agreement were
    entitled to rely on their personal knowledge of the settlement agreement
    and the special meeting.
    2. The plaintiffs could not prevail on their claim that the Superior Court
    improperly concluded that W Co.’s special permit application did not
    constitute an impermissible expansion of a nonconforming use, which
    was based on their assertions that only accessory uses mentioned in
    the settlement agreement were permitted and that the inclusion of a
    bar, a prefunction meeting area and a meeting room/library were not
    permitted accessory uses: the record contained substantial evidence
    that the parties to the settlement agreement did not intend to restrict
    accessory uses to only those specifically mentioned in the settlement
    agreement and did not include floor plans that depicted the uses contem-
    plated for the interior of the main building, as the transcript of the
    special meeting contained no discussion of the scope of accessory uses,
    no floor plans were presented at that hearing, and the commission heard
    testimony from a party to the settlement agreement, which it was entitled
    to credit, that the parties to that agreement never undertook to create
    a comprehensive agreement; moreover, the bar, prefunction meeting
    area and meeting room/library were permitted accessory uses, as the
    commission reasonably could have found that those uses had commonly,
    habitually and by long practice been established as reasonably associ-
    ated with the primary use of an inn in Washington, the commission used
    the only existing inn in town as a de facto model of what the term
    ‘‘inn’’ meant, as the zoning regulations did not define ‘‘inn,’’ there was
    uncontroverted evidence that the existing inn featured a bar, libraries
    and meeting areas, and the commission reasonably could have found that
    W Co.’s use of the property would not result in a substantial difference
    in effect on the surrounding neighborhood, there having been evidence
    that all of the accessory uses W Co. proposed were typical of what inns
    do and that the proposed uses were of a smaller scale than those at the
    existing inn; furthermore, the proposed accessory uses in the settlement
    agreement were the same as those approved in the commission’s grant-
    ing of W Co.’s motion to modify the special permit, and the commission
    required as a condition of its approval of the special permit modification
    that the approval was subject to all of the conditions and limitations in
    the settlement agreement as well as the more restrictive limitations the
    commission imposed in its approval of the settlement agreement.
    3. The plaintiffs’ claim that the Superior Court failed to require compliance
    with the special permit standards in the zoning regulations was unavail-
    ing, as the plaintiffs failed to rebut the strong presumption of regularity
    that attaches to the conduct of zoning commissions: the commission
    reasonably could have concluded that W Co.’s proposed use of the
    property comported with the intent and objectives of the zoning regula-
    tions and the town’s plan of conservation and development, and was
    in harmony with the orderly development of the town and surrounding
    neighborhood; moreover, the zoning regulations previously had author-
    ized use of the property as an inn, the settlement agreement plainly
    permitted the use of the property in that manner and provided a mecha-
    nism for modification of the plans contained in that agreement, and,
    although the commission did not render an official, collective statement
    of reasons for its action, as required by statute (§ 8-3c (b)), noncompli-
    ance with that imperative was commonplace and condoned by decades
    of appellate authority; furthermore, the commission gave ample atten-
    tion to the propriety and the impact of W Co.’s proposed use of the
    property, the commission was cognizant of the fact that the only other
    inn in Washington had featured comparable primary and accessory uses
    for decades, the commission was well aware of the protracted proce-
    dural history of the proposed use, and the changes in the special permit
    application did not materially alter those considerations.
    Argued March 15, 2021—officially released January 11, 2022
    Procedural History
    Appeal from the decision of the named defendant
    granting the application of the defendant 101 Wykeham
    Road, LLC, for the modification of a special permit for
    the construction of an inn, and for other relief, brought
    to the Superior Court in the judicial district of Litchfield
    at Torrington and transferred to the judicial district of
    Waterbury, Complex Litigation Docket; thereafter, the
    case was tried to the court, Bellis, J.; judgment dismiss-
    ing the appeal, from which the plaintiffs, on the granting
    of certification, appealed to this court. Affirmed.
    Gail E. McTaggart, for the appellants (plaintiffs).
    Michael A. Zizka, for the appellee (named defen-
    dant).
    Paul V. Gelderman, for the appellee (defendant Erika
    Klauer et al.).
    Teresa R. Peacocke, self-represented, the appellee
    (defendant).
    Opinion
    ELGO, J. The plaintiffs, Robert L. Parker, Peter E.
    Rogness, and Randi M. Solomon, trustee for the Randi
    M. Solomon Revocable Trust, appeal from the judgment
    of the Superior Court denying their appeal from the
    decision of the defendant Zoning Commission of the
    Town of Washington (commission) to grant the applica-
    tion of the defendant 101 Wykeham Road, LLC (appli-
    cant), to modify a special permit previously approved
    by the commission in 2013 pursuant to a settlement
    agreement.1 On appeal, the plaintiffs claim that the court
    improperly concluded that the application did not con-
    stitute an impermissible expansion of both a noncon-
    forming structure and a nonconforming use. The plain-
    tiffs further claim that the court ‘‘failed to require
    compliance with [the] special permit standards’’ con-
    tained in the Washington Zoning Regulations (regula-
    tions).2 We affirm the judgment of the Superior Court.3
    This appeal concerns the development of a 26.9 acre
    parcel of real property owned by the applicant and
    known as 101 Wykeham Road in Washington (prop-
    erty). The property is located in the ‘‘R-1 Farming and
    Residential’’ zoning district.4 Among the uses authorized
    by special permit in that zone is an ‘‘Inn or Tourist
    home.’’ Washington Zoning Regs., § 4.4.1. The regula-
    tions, however, provide no definition of the terms ‘‘inn’’
    or ‘‘tourist home.’’
    In May, 2008, an entity known as Wykeham Rise, LLC
    (Wykeham), the predecessor in title to the applicant,
    applied for a special permit to construct an ‘‘inn and
    associated appurtenances’’ on the property. Following
    a lengthy hearing over the course of several months,
    the commission, by a vote of three to two, denied that
    application.5 Wykeham appealed from that decision to
    the Superior Court, claiming that (1) the commission
    lacked a valid reason for its denial, and (2) the commis-
    sion’s decision must be reversed due to the improper
    participation of alternate members in its deliberations
    and the improper predetermination of the merits of the
    application by one regular member of the commission.
    While that appeal was pending before the Superior
    Court, Wykeham alternatively sought special permit
    approval to operate a school on the property,6 and it is
    undisputed that the commission granted such approval.
    Although the record before this court is voluminous
    and contains materials that reference ‘‘Wykeham Uni-
    versity,’’ it does not contain copies of any such special
    permit applications or the commission’s formal deci-
    sion to approve such a special permit. The record
    nonetheless indicates that Wykeham agreed, as a condi-
    tion to the settlement agreement at issue in this appeal,
    to surrender the special permit approval that it had
    obtained for a school once the settlement agree-
    ment was ratified. See footnote 7 of this opinion.
    In October, 2011, the Superior Court issued its memo-
    randum of decision on Wykeham’s appeal from the com-
    mission’s denial of its request for a special permit to
    construct an inn on the property. The court concluded
    that none of Wykeham’s claims constituted reversible
    error. At the same time, the court noted its concern
    about the conduct of the commission, stating in relevant
    part: ‘‘The court observes . . . that certain commission
    members engaged in a level of conduct that skirted the
    boundaries of what is appropriate for municipal public
    officials sitting on a commission. First, during the
    course of the five public hearings held on Wykeham’s
    application . . . Commissioner [Valerie] Friedman
    made observations and comments that might lead one
    to believe that the application was being predetermined
    and prejudiced in such a way that the principles of
    fundamental fairness during the proceedings were
    being undercut. . . . The court finds that . . . Com-
    missioner Friedman, as a sitting member of the commis-
    sion, created the appearance, in form, if not in sub-
    stance,     of    predetermination      and,    therefore,
    contradicted the spirit of the statutory mandate of Gen-
    eral Statutes § 8-11. The court further observes that the
    participation by [two] alternate commission members
    . . . in the deliberative process by way of comment or
    submission on why the application should be denied,
    was inappropriate.’’ The court concluded with the fol-
    lowing admonition: ‘‘The court . . . strongly advises
    that Chairman [David] Owen, along with all of the com-
    missioner members, should undertake some remedial
    training and orientation concerning their duties as
    municipal public officials sitting on boards and commis-
    sions, including their obligation to remain impartial and
    nonjudgmental during such proceedings, and to with-
    hold judgment until all of the evidence and arguments
    have been presented for their deliberation.’’ Wykeham
    Rise, LLC v. Zoning Commission, Superior Court, judi-
    cial district of Litchfield, Docket No. CV-XX-XXXXXXX-S
    (October 11, 2011).
    Wykeham then filed a petition for certification, seek-
    ing appellate review of the propriety of that judgment,
    which this court granted. In addition to Wykeham and
    the commission, the parties to that appeal included
    three neighboring property owners—Eric A. Federer,
    Wendy R. Federer, and Teresa Rosen Peacocke.
    While that appeal was pending, the parties settled
    their differences and entered into an agreement dated
    January 9, 2013 (settlement agreement). That settle-
    ment agreement noted that Wykeham ‘‘desires to con-
    struct and operate an inn’’ on the property and then
    set forth sixteen ‘‘terms and conditions by and under
    which neither [the Federers] nor Peacocke would
    oppose Wykeham in its efforts to obtain [c]ommission
    approval [of] an [i]nn on the [p]roperty.’’7 At a special
    meeting held on January 7, 2013,8 the commission, by
    a vote of four to one, approved the settlement agree-
    ment ‘‘per the site development plan by Arthur H. How-
    land and Associates, dated July 8, 2011, revised to
    December 17, 2012, 32 sheets’’ (2012 plan). The commis-
    sion also incorporated by reference into its approval
    ‘‘[t]he architectural renderings [marked] ‘A’ and ‘B’ ’’9
    and six conditions of approval that were contained in
    its previous special permit approval to operate a school
    on the property.10
    Following the commission’s approval of the settle-
    ment agreement, a motion for approval was filed with
    the Superior Court pursuant to General Statutes § 8-8
    (n), as the appeal of the commission’s 2008 decision
    to deny Wykeham’s special permit request remained
    pending.11 Through legal counsel, the plaintiffs in the
    present action—who were not parties to the settlement
    agreement or the proceeding before the Superior
    Court—opposed the settlement agreement.12 After hear-
    ing from all interested parties, the court concluded that
    the settlement agreement ‘‘reflects honest, good faith
    compromise on the part of all parties to this appeal.’’
    Wykeham Rise, LLC v. Zoning Commission, Docket
    No. CV-XX-XXXXXXX-S, 
    2013 WL 951156
    , *1 (Conn. Super.
    February 5, 2013). The court further emphasized that
    ‘‘[t]he settlement reflects a substantially reduced proj-
    ect, which should be much more acceptable to the
    neighbors. The settlement includes the following: (1)
    the removal of some buildings which were part of the
    original proposal; (2) reduced parking; (3) reduced res-
    taurant; (4) a prohibition on amplified music; (5) closure
    of one means of access and egress; (6) limitation on
    the number of events which can be held; [and] (7) plant-
    ings to screen the activities of the project.’’ 
    Id.
     Accord-
    ingly, the court approved the settlement agreement,
    thereby memorializing Wykeham’s ability to construct
    an inn on the property, as depicted on the 2012 plan.13
    See footnote 7 of this opinion.
    The settlement agreement also contemplates modifi-
    cation of the 2012 plan. In this regard, the agreement
    requires that ‘‘[a]ny amendments to this [s]ettlement
    [a]greement must be consented to by all the parties
    herein or their heirs, successors or assigns.’’ The settle-
    ment agreement further provides that ‘‘[a]ll modifica-
    tions to the approved plans must be approved by the
    [commission] or its authorized agent prior to implemen-
    tation.’’
    On March 22, 2018, the applicant, as successor in title
    to the property, filed an application for the ‘‘modifica-
    tion of [the] existing special permit’’ that had been
    approved by the commission at its January 7, 2013 spe-
    cial meeting (modification application). That applica-
    tion was accompanied by several documents, including
    a new site development plan prepared by Arthur H.
    Howland & Associates, P.C., dated December 2, 2016,
    revised to February 5, 2018 (2018 plan),14 a copy of the
    applicant’s February 8, 2018 application for a building
    permit and related documentation,15 and copies of both
    the settlement agreement and the commission’s January
    7, 2013 approval thereof.16
    In accordance with the instructions provided by the
    commission on its special permit application form, the
    application also included a written description of the
    proposed modification. In that correspondence, the
    applicant’s legal counsel stated in relevant part: ‘‘The
    [a]pplicant’s goal is to build the [i]nn that it is entitled
    to build as a result of the settlement agreement reached
    with the [commission] in January of 2013 and approved
    by the court on February 5, 2013. To do that, the [a]ppli-
    cant [is requesting] a modification to the [2012 plan]
    incorporated into the [s]ettlement [a]greement. This
    modification is in part necessary in order to comply
    with newer building code requirements for fire egress.
    It is also discretionary in part as the [a]pplicant wishes
    to add grading and stone walls in the rear of the main
    building. . . . It is noted that there is an inconsistency
    between the [2012 plan] footprint . . . which defines
    the footprint of the main building, and [r]enderings A &
    B, (incorporated into the [commission’s] approval of
    the [s]ettlement [a]greement). To wit, the footprint of
    the [r]enderings (to the extent that it is discernable)
    does not comply with the [s]ettlement [a]greement/
    [2012 plan]. Understanding the limited purpose of the
    [r]enderings was merely to demonstrate the architec-
    tural style of the main building, the [s]ettlement [a]gree-
    ment/[2012 plan] was used for the footprint and the
    [r]enderings for the architectural [style; therefore, the]
    plans submitted substantially comply with both.’’
    The commission held a public hearing on the modifi-
    cation application on April 17, and July 19 and 23, 2018,
    at which it received documentary and testimonial evi-
    dence.17 One contentious issue concerned the appli-
    cant’s proposal to permit individual ownership of guest
    room units at the inn, as multifamily housing was not
    permitted under the regulations. Another major issue
    with the 2018 plan was the proposed addition of a 2000
    square foot ballroom and parking concerns related
    thereto. Some members of the public also opined that
    the 2018 plan constituted an expansion of the noncon-
    forming structure memorialized in the 2012 plan and
    approved as part of the settlement agreement. In
    response, Peacocke, who had opposed Wykeham’s 2008
    special permit application and who was a party to the
    settlement agreement, stated at the public hearing: ‘‘I
    just [want] to remind members of the commission . . .
    that there were four attorneys who negotiated and
    drafted the [settlement agreement]. If we had intended
    to create an exclusionary agreement itemizing all and
    only those matters, we’d have said so, and we didn’t.
    . . . [W]e . . . never undertook to create a compre-
    hensive agreement . . . .’’
    The commission also was presented with evidence
    as to how the applicant’s proposal compared with the
    Mayflower Inn, which was located ‘‘right down the
    road’’ from the property and was ‘‘the only inn in [Wash-
    ington]’’ at that time. Commission members were
    reminded that, because the regulations do not define
    the term ‘‘inn,’’ the commission had ‘‘repeatedly said
    [that] it uses the Mayflower Inn . . . as a de facto
    model of what [constitutes] an inn . . . in Washing-
    ton.’’ Due to the similarity of the Mayflower Inn to the
    applicant’s proposal, Paul S. Szymanski, a civil engineer,
    testified that the Mayflower Inn provided ‘‘a wonderful
    basis for comparison,’’ and the commission was pre-
    sented with evidence as to how the applicant’s proposal
    compared with that existing inn.18
    The commission deliberated the merits of the appli-
    cant’s modification request over the course of three
    nights on August 7, 27 and 28, 2018. At the conclusion
    of those deliberations, the commission, by a vote of
    three to two, approved the application to modify the
    existing special permit in accordance with the 2018
    plan.19 The commission attached twenty-five detailed
    conditions to that approval.20 See General Statutes § 8-
    2 (a) (special permits may be subject ‘‘to conditions
    necessary to protect the public health, safety, conve-
    nience and property values’’); Carpenter v. Planning &
    Zoning Commission, 
    176 Conn. 581
    , 594, 
    409 A.2d 1029
    (1979) (§ 8-2 ‘‘expressly’’ provides that municipal ‘‘com-
    mission[s] [are] authorized to impose conditions as a
    prerequisite to certain uses of lands’’); St. Joseph’s High
    School, Inc. v. Planning & Zoning Commission, 
    176 Conn. App. 570
    , 576, 
    170 A.3d 73
     (2017) (‘‘in granting
    a special permit, the commission has the authority to
    place reasonable restrictions on the proposed use’’).
    Notably, the commission prohibited both the proposed
    ballroom and individual ownership of guest room units.
    See footnote 20 of this opinion. Although the commis-
    sion did not provide a collective statement of the basis
    of its decision,21 the motion it granted to approve the
    modification application concluded by stating: ‘‘The
    [c]ommission finds that all of the foregoing conditions
    must be met in order for the proposed use to be success-
    fully accommodated on the chosen site in accordance
    with the applicable [regulations]. Therefore, if a court
    should determine that any of the foregoing conditions
    are invalid or unlawful, this approval shall be null and
    void . . . .’’
    The plaintiffs, all of whom are owners of property
    located within 100 feet of the applicant’s property,22
    filed a timely appeal with the Superior Court, challeng-
    ing the propriety of the commission’s decision to grant
    the modification application. The plaintiffs claimed,
    among other things, that the commission improperly
    authorized the expansion of both a nonconforming
    structure and a nonconforming use in contravention of
    the regulations. The court rejected that contention and
    further concluded that the commission ‘‘had substantial
    evidence to approve and modify the application and
    did so only after imposing certain conditions to protect
    the public health and safety. The court finds that the
    commission did not act arbitrarily or illegally . . . .’’
    Accordingly, the court dismissed the appeal.
    The plaintiffs thereafter filed a petition with this court
    for certification to appeal pursuant to § 8-8 (o).23 We
    granted the plaintiffs’ petition, and this appeal followed.
    Before considering the claims advanced by the plain-
    tiffs in this appeal, we note certain well established
    principles. ‘‘[T]he function of a special permit is to allow
    a property owner to use his property in a manner
    expressly permitted under the zoning regulations, sub-
    ject to certain conditions necessary to protect the public
    health, safety, convenience, and surrounding property
    values. . . . The basic rationale for the special permit
    [is] . . . that while certain [specially permitted] land
    uses may be generally compatible with the uses permit-
    ted as of right in particular zoning districts, their nature
    is such that their precise location and mode of operation
    must be regulated because of the topography, traffic
    problems, neighboring uses, etc., of the site.’’ (Citation
    omitted; internal quotation marks omitted.) St. Joseph’s
    High School, Inc. v. Planning & Zoning Commission,
    
    supra,
     
    176 Conn. App. 585
    –86.
    Judicial review of a commission’s decision to grant or
    deny a special permit must be mindful of ‘‘the significant
    discretion that a commission is afforded . . . . In
    reviewing a decision of a zoning [commission], a
    reviewing court is bound by the substantial evidence
    rule, according to which . . . [c]onclusions reached by
    [a zoning] commission must be upheld by the [Superior
    Court] if they are reasonably supported by the record.
    The credibility of the witnesses and the determination
    of issues of fact are matters solely within the province
    of the [commission]. . . . The question is not whether
    the [Superior Court] would have reached the same con-
    clusion . . . but whether the record before the [com-
    mission] supports the decision reached. . . . If [the
    Superior Court] finds that there is substantial evidence
    to support a zoning [commission’s] findings, it cannot
    substitute its judgment for that of the [commission].
    . . . If there is conflicting evidence in support of the
    zoning commission’s stated rationale, the reviewing
    court . . . cannot substitute its judgment as to the
    weight of the evidence for that of the commission. . . .
    The [commission’s] decision must be sustained if an
    examination of the record discloses evidence that sup-
    ports any one of the reasons given. . . . Moreover,
    [s]ubstantial evidence exists if the administrative
    record affords a substantial basis of fact from which
    the fact in issue can be reasonably inferred. . . .
    ‘‘[T]he substantial evidence standard is highly defer-
    ential and permits less judicial scrutiny than a clearly
    erroneous or weight of the evidence standard of review.
    . . . In light of the significant amount of deference that
    the substantial evidence standard affords a commis-
    sion, the court has described it as an important limita-
    tion on the power of the courts to overturn a decision of
    an administrative agency . . . [that] provide[s] a more
    restrictive standard of review than standards embody-
    ing review of weight of the evidence or clearly errone-
    ous action. . . . [O]n appeal, judicial review [of a com-
    mission’s denial of a special permit application] is
    confined to the question of whether the commission
    abused its discretion in finding that an applicant failed
    to demonstrate compliance with the requirements of
    applicable zoning regulations. When there is evidence
    in the record to substantiate the commission’s deter-
    mination, the determination must stand.’’ (Citations
    omitted; emphasis in original; internal quotation marks
    omitted.) McLoughlin v. Planning & Zoning Commis-
    sion, 
    200 Conn. App. 307
    , 318–20, 
    240 A.3d 709
    , cert.
    granted, 
    335 Conn. 978
    , 
    241 A.3d 131
     (2020). At the
    same time, when a question of law is presented, such
    as the proper interpretation of a zoning regulation, our
    review is plenary. See, e.g., Reardon v. Zoning Board
    of Appeals, 
    311 Conn. 356
    , 364, 
    87 A.3d 1070
     (2014);
    Zimnoch v. Planning & Zoning Commission, 
    302 Conn. 535
    , 547, 
    29 A.3d 898
     (2011).
    This appeal concerns the alleged expansion of a ‘‘non-
    conforming use,’’ a term of art with both general and
    specific meaning. In Munroe v. Zoning Board of
    Appeals, 
    75 Conn. App. 796
    , 
    818 A.2d 72
     (2003), this
    court, citing a noted treatise on land use in this state,
    observed that, ‘‘[t]he term nonconforming uses is often
    used without consideration as to what aspect of the
    use of property is nonconforming, and in determining
    whether an activity is an expansion or change of a
    nonconforming use, the nature of the nonconformity is
    important.’’ (Internal quotation marks omitted.) 
    Id., 806
    .
    The court then detailed four distinct types of nonconfor-
    mity: ‘‘(1) nonconforming use—the use of the land or
    structure on it is nonconforming (e.g., commercial use
    in a residential zone); (2) a nonconforming lot—the lot
    is undersized, irregularly shaped, has inadequate width
    or depth or inadequate frontage; (3) nonconforming
    building or structure—the structure does not meet the
    minimum or maximum size requirements, floor area
    ratio, height or bulk requirements of the existing zoning
    regulations; (4) nonconformity as to location of struc-
    ture, i.e., it does not conform with one or more of
    the setback requirements.’’ (Internal quotation marks
    omitted.) Id.; see also Verrillo v. Zoning Board of
    Appeals, 
    155 Conn. App. 657
    , 690 n.20, 
    111 A.3d 473
    (2015). In the present case, the first and fourth types
    of nonconformity are implicated, as the plaintiffs claim
    that the commission improperly approved the expan-
    sion of both a nonconforming structure and a noncon-
    forming use on the property. We address each claim
    in turn.
    I
    We begin with the plaintiffs’ contention that the court
    improperly concluded that the applicant’s proposal did
    not constitute an impermissible expansion of a noncon-
    forming structure. To resolve that claim, we must deter-
    mine, as a threshold matter, whether the principles that
    govern nonconforming uses are applicable under the
    unique facts and circumstances of this case.24 That
    inquiry entails consideration of not only the undisputed
    fact that the alleged nonconformity was the direct result
    of the settlement agreement ratified by the Superior
    Court in 2013 but, also, the undisputed fact that, at all
    relevant times, no structure proposed by the applicant
    existed on the property, nor had construction of any
    such structure commenced.
    A
    ‘‘A nonconformity is a use or structure prohibited by
    the zoning regulations [that] is permitted because of
    its existence at the time that the regulations [were]
    adopted.’’ Adolphson v. Zoning Board of Appeals, 
    205 Conn. 703
    , 710, 
    535 A.2d 799
     (1988). ‘‘Where a noncon-
    formity exists, it is a vested right which adheres to
    the land itself. . . . A vested right . . . to continue the
    nonconforming use is in the land . . . . [T]he right to
    a nonconforming use is a property right and . . . any
    provision of a statute or ordinance which takes away
    that right in an unreasonable manner, or in a manner
    not grounded on the public welfare, is invalid. A lawfully
    established nonconforming use is a vested right and is
    entitled to constitutional protection.’’ (Citation omitted;
    internal quotation marks omitted.) Petruzzi v. Zoning
    Board of Appeals, 
    176 Conn. 479
    , 483–84, 
    408 A.2d 243
    (1979). As this court has noted, ‘‘[o]ur General Statutes
    recognize and protect this bedrock principle.’’ Verrillo
    v. Zoning Board of Appeals, 
    supra,
     
    155 Conn. App. 684
    ;
    see General Statutes § 8-2 (a) (prohibiting municipality
    from amortizing or eliminating nonconformities
    through enactment or amendment of zoning regula-
    tions); General Statutes § 8-13a (a) (providing statutory
    protection to certain nonconforming ‘‘building[s] or
    other structure[s]’’); General Statutes § 8-26a (b) (3)
    (providing that change in subdivision or zoning regula-
    tions, or boundaries of districts, ‘‘shall not alter or affect
    a nonconforming use or structure as provided in [§]
    8-2’’).
    Although the right to continue a nonconforming use
    is statutorily protected, it is equally well established
    that, absent extraordinary circumstances warranting
    variance of the zoning regulations by a municipal zoning
    board of appeals,25 such nonconformity cannot be
    expanded or enlarged. As our Supreme Court has
    explained, ‘‘nonconforming uses should be abolished
    or reduced to conformity as quickly as the fair interest
    of the parties will permit—[i]n no case should they be
    allowed to increase.’’ (Internal quotation marks omit-
    ted.) Adolphson v. Zoning Board of Appeals, 
    supra,
     
    205 Conn. 710
    ; see also Bauer v. Waste Management of
    Connecticut, Inc., 
    234 Conn. 221
    , 243, 
    662 A.2d 1179
    (1995) (‘‘a nonconforming structure cannot be
    increased in size in violation of zoning ordinances’’);
    Blum v. Lisbon Leasing Corp., 
    173 Conn. 175
    , 181, 
    377 A.2d 280
     (1977) (noting ‘‘the indisputable goal of zoning
    to reduce nonconforming to conforming uses with all
    the speed justice will tolerate’’); Kleinsmith v. Plan-
    ning & Zoning Commission, 
    157 Conn. 303
    , 314, 
    254 A.2d 486
     (1968) (‘‘[t]he advantages which the owners
    of nonconforming property acquire by the enactment
    of a zoning ordinance are not to be subsequently aug-
    mented except as permitted by the ordinance’’); Guil-
    ford v. Landon, 
    146 Conn. 178
    , 182, 
    148 A.2d 551
     (1959)
    (‘‘the accepted policy of zoning . . . is to prevent the
    extension of nonconforming uses’’); Planning & Zon-
    ing Commission v. Craft, 
    12 Conn. App. 90
    , 96, 
    529 A.2d 1328
     (‘‘[z]oning regulations in general seek the
    elimination of nonconforming uses, not their creation
    or enlargement’’), cert. denied, 
    205 Conn. 804
    , 
    531 A.2d 937
     (1987). Those principles are memorialized in the
    regulations at issue here, which provide in relevant part
    that ‘‘[i]t is . . . the intent of these regulations that
    the nonconforming aspects of [any nonconforming] lots
    and structures shall not be enlarged, expanded, or
    extended . . . . A nonconforming use of a structure
    or lot shall not be extended, expanded, or enlarged
    . . . .’’26 Washington Zoning Regs., § 17.1.
    1
    Under the traditional analysis applicable to noncon-
    forming uses, ‘‘[f]or a use to be considered nonconform-
    ing . . . [it] must possess two characteristics. First, it
    must be lawful and second, it must be in existence
    at the time that the zoning regulation making the use
    nonconforming was enacted.’’ (Emphasis in original.)
    Helicopter Associates, Inc. v. Stamford, 
    201 Conn. 700
    ,
    712, 
    519 A.2d 49
     (1986); see also Washington Zoning
    Regs., § 17.4 (permitting ‘‘a lawfully constructed, but
    currently nonconforming, structure’’ to be ‘‘continued
    so long as it remains otherwise lawful’’); Washington
    Zoning Regs., § 17.1 (intent of nonconforming use regu-
    lations is to permit nonconforming structures that
    existed ‘‘before the [r]egulations as currently amended
    were passed’’ to ‘‘continue until they are removed’’).
    The proposed structure in question here, known as the
    ‘‘main building,’’ possesses neither characteristic.
    A ‘‘lawful’’ use is one that complied with both ‘‘state
    law’’ and all zoning regulations that were in effect when
    the use commenced. Helicopter Associates, Inc. v.
    Stamford, supra, 
    201 Conn. 712
    . At all relevant times,
    the applicable regulation governing a ‘‘Tourist Home
    or Inn’’ provided in relevant part that ‘‘the minimum
    setback of any structure . . . shall be . . . [fifty] feet
    from any lot line.’’27 Washington Zoning Regs., § 13.9.C.
    The footprint28 of the main building, as depicted on the
    2012 plan that was incorporated by reference into the
    settlement agreement, was, at its closest point, to be
    located thirty-one feet from the property line. That loca-
    tion thus resulted in a nineteen foot intrusion into the
    setback area. Accordingly, the main building depicted
    on the 2012 plan cannot be deemed a lawful structure,
    as it does not comply with the setback requirements
    of the regulations. See Helicopter Associates, Inc. v.
    Stamford, supra, 712.
    In addition, to constitute a nonconforming structure
    under established case law, the main building had to
    ‘‘be in existence at the time that the zoning regulation
    making the use nonconforming was enacted.’’ (Empha-
    sis in original.) Id. The precedent of our Supreme Court
    instructs that ‘‘[t]o be a nonconforming use the use
    must be actual. It is not enough that it be a contemplated
    use [or] that the property was bought for the particular
    use. The property must be so utilized as to be irrevoca-
    bly committed to that use.’’ (Internal quotation marks
    omitted.) Francini v. Zoning Board of Appeals, 
    228 Conn. 785
    , 789, 
    639 A.2d 519
     (1994); see also Karls v.
    Alexandra Realty Corp., 
    179 Conn. 390
    , 399, 
    426 A.2d 784
     (1980) (explaining that, ‘‘to be irrevocably commit-
    ted to a particular use, there must have been a signifi-
    cant amount of preliminary or preparatory work done
    on the property prior to the enactment of the zoning
    regulations which unequivocally indicates that the prop-
    erty was going to be used for that particular purpose’’);
    Petruzzi v. Zoning Board of Appeals, 
    supra,
     
    176 Conn. 482
    –83 (‘‘[t]he lot and building in question’’ qual-
    ified as legally protected nonconforming uses because
    they were in existence prior to enactment of zoning
    regulations and had not ‘‘changed in size or shape’’);
    Lebanon v. Woods, 
    153 Conn. 182
    , 197, 
    215 A.2d 112
    (1965) (because tract of land ‘‘was not ‘irrevocably com-
    mitted’ to development,’’ it ‘‘was not a nonconforming
    use’’); MacKenzie v. Town Planning & Zoning Com-
    mission, 
    149 Conn. 678
    , 684, 
    183 A.2d 619
     (1962) (‘‘a
    contemplated use cannot constitute an actual use’’);
    Corsino v. Grover, 
    148 Conn. 299
    , 308, 
    170 A.2d 267
    (1961) (‘‘[a] proposed use cannot constitute an existing
    nonconforming use’’); Fairlawns Cemetery Assn., Inc.
    v. Zoning Commission, 
    138 Conn. 434
    , 444, 
    86 A.2d 74
    (1952) (To establish a nonconforming use, ‘‘[i]t is not
    enough that it be a contemplated use, even though plans
    for that have been put on paper. . . . It is not enough
    that the property was bought for the particular pur-
    pose.’’ (Citations omitted.)); DeFelice v. Zoning Board
    of Appeals, 
    130 Conn. 156
    , 161, 
    32 A.2d 635
     (1943)
    (‘‘[a]ctual use as distinguished from merely contem-
    plated use’’ is required).
    Although the main building was a contemplated use
    of the property, and its footprint was memorialized in
    the 2012 plan, there is no basis in the record to conclude
    that the property was irrevocably committed to that use.
    There is no evidence that construction of that structure
    ever commenced, nor has any party so argued. The
    main building was merely contemplated but did not
    actually exist. As a result, it does not satisfy the com-
    mon-law standard for a nonconforming use.
    2
    That determination does not end our inquiry, as that
    common-law standard evolved in cases concerning non-
    conforming uses that ‘‘antedate the enactment of zon-
    ing’’ regulations. Petruzzi v. Zoning Board of Appeals,
    supra, 
    176 Conn. 482
    ; see also Pleasant View Farms
    Development, Inc. v. Zoning Board of Appeals, 
    218 Conn. 265
    , 271–73, 
    588 A.2d 1372
     (1991); Helicopter
    Associates, Inc. v. Stamford, supra, 
    201 Conn. 711
    ;
    Poneleit v. Dudas, 
    141 Conn. 413
    , 419–20, 
    106 A.2d 479
    (1954); Lane v. Cashman, 
    179 Conn. App. 394
    , 438–39,
    
    180 A.3d 13
     (2018); Verrillo v. Zoning Board of Appeals,
    supra, 
    155 Conn. App. 683
    –87. Given that context, the
    present case is fundamentally distinct, in that it origi-
    nates not from a preexisting use on the property but,
    rather, a settlement agreement regarding a proposed
    use. That crucial distinction requires us to more care-
    fully consider the precise nature of the use at issue in
    this appeal.
    As one treatise notes, a variety of uses of land are
    entitled to protection under our law, including special
    permit uses, nonconforming uses, and ‘‘[a]uthorized ille-
    gal uses . . . allowed by variance granted by the zon-
    ing board of appeals.’’ R. Fuller, 9B Connecticut Prac-
    tice Series: Land Use Law and Practice (4th Ed. 2015)
    § 52:1, p. 219. The use at issue here—the operation of
    an inn on the property with a main building partially
    inside the setback area—technically is not the proper
    subject of a special permit, as the application did not
    strictly comply with the setback requirements of § 13.9
    of the regulations. It also is not an illegal use authorized
    by a variance issued by the Zoning Board of Appeals
    of the Town of Washington. Rather, the use here is
    something altogether different and is perhaps best
    described as a lawful use resulting from the approval
    of a settlement agreement by both the municipal zoning
    commission and the Superior Court.
    ‘‘[S]ettlement of disputes . . . is to be encouraged
    as sound public policy.’’ (Internal quotation marks omit-
    ted.) Yale University v. Out of the Box, LLC, 
    118 Conn. App. 800
    , 809 n.7, 
    990 A.2d 869
     (2010). In the context
    of a municipal land use agency’s settlement of a pending
    appeal, there exists a ‘‘powerful interest in the promo-
    tion of settlement of litigation by agreement of the par-
    ties.’’ Sendak v. Planning & Zoning Commission, 
    7 Conn. App. 238
    , 242, 
    508 A.2d 781
     (1986). Moreover,
    the statutory requirement that any settlement involving
    a municipal land use agency must be approved by the
    Superior Court following a hearing; see footnote 11 of
    this opinion; ‘‘provides a forum for the presentation of
    any challenges to a settlement, including any allegations
    of bad faith, collusion or other improper conduct by
    the parties to the settlement,’’ and ‘‘serves to protect
    the public interest by guarding against any attempt on
    the part of the settling parties to evade judicial review
    and scrutiny by potentially aggrieved landowners.’’
    Brookridge District Assn. v. Planning & Zoning Com-
    mission, 
    259 Conn. 607
    , 616, 
    793 A.2d 215
     (2002); see
    also Willimantic Car Wash, Inc. v. Zoning Board of
    Appeals, 
    247 Conn. 732
    , 742 n.16, 
    724 A.2d 1108
     (1999)
    (legislative history of § 8-8 (n) ‘‘indicates that the
    requirement of court approval was designed to guard
    against surreptitious dealing between zoning boards
    and applicants, to avoid frivolous appeals initiated for
    ‘leverage,’ and to ensure that settlements are fair’’). That
    statutory requirement ‘‘recognizes . . . the legitimacy
    of settlement of zoning cases . . . .’’ Brookridge
    District Assn. v. Planning & Zoning Commission,
    supra, 617.
    As was the case in Brookridge District Assn., the
    settlement agreement in the present case resolved a
    pending appeal involving the commission and an appli-
    cant that had been denied an application for a special
    permit. See Wykeham Rise, LLC v. Zoning Commis-
    sion, supra, 
    2013 WL 951156
    . The settlement agreement
    was formally approved by the commission at a special
    meeting held on January 7, 2013, and thereafter was
    approved by the Superior Court following a hearing
    conducted in accordance with § 8-8 (n). Because all
    statutory requirements were followed and the settle-
    ment agreement was ratified by both the commission
    and the Superior Court, we agree with the plaintiffs
    that the proposed main building, as depicted in the 2012
    plan, constitutes a lawful use of the property.29
    Although lawful, the main building does not comply
    with the setback requirements for structures con-
    structed on property that is used as an inn. At all rele-
    vant times, § 13.9.C of the regulations required a fifty
    foot setback ‘‘from any lot line.’’30 The regulations define
    a ‘‘nonconforming building’’ as ‘‘[a] building, which does
    not conform to all the applicable provisions of these
    [r]egulations.’’ Washington Zoning Regs., § 21.1.49.
    Because it does not comply with the lot line setback
    requirements of § 13.9.C of the regulations, the main
    building is nonconforming under the regulations.
    We therefore conclude that the main building depicted
    in the 2012 plan and incorporated into the settlement
    agreement constitutes a lawful, albeit nonconforming,
    structure as a result of the approval of the settlement
    agreement by the Superior Court. The principles that
    govern nonconforming uses in this state thus apply to
    such lawful nonconforming structures. Like any non-
    conforming structure, the main building depicted in the
    2012 plan cannot be expanded or enlarged within the
    setback area in the absence of a variance from the
    Zoning Board of Appeals.
    B
    The question, then, is whether the commission improp-
    erly authorized the expansion of that nonconforming
    structure when it approved the modification application
    in 2018. In its memorandum of decision, the Superior
    Court concluded that the commission properly deter-
    mined that the modification application did not consti-
    tute an impermissible expansion of a nonconforming
    structure. Our review of that determination is guided
    by the substantial evidence standard. See, e.g., Zachs
    v. Zoning Board of Appeals, 
    218 Conn. 324
    , 329–30,
    
    589 A.2d 351
     (1991); Woodbury Donuts, LLC v. Zoning
    Board of Appeals, 
    139 Conn. App. 748
    , 760 n.11, 
    57 A.3d 810
     (2012).
    The regulations prohibit the expansion of noncon-
    forming structures.31 To determine whether the com-
    mission improperly approved the expansion of the non-
    conforming main building within the setback area, we
    must determine, as a preliminary matter, the extent of
    the nonconformity that was memorialized in the 2013
    settlement agreement.
    1
    ‘‘A settlement agreement . . . is a contract among
    the parties.’’ Ackerman v. Sobol Family Partnership,
    LLP, 
    298 Conn. 495
    , 532, 
    4 A.3d 288
     (2010). At its essence,
    a settlement agreement that resolves a pending zoning
    appeal in accordance with § 8-8 (n) is a stipulated judg-
    ment, as it is ‘‘a contract of the parties acknowledged in
    open court and . . . recorded by a court of competent
    jurisdiction . . . [and] is binding to the same degree as
    a judgment obtained through litigation . . . .’’ (Citation
    omitted; internal quotation marks omitted.) Doe v. Roe,
    
    246 Conn. 652
    , 664–65 n.22, 
    717 A.2d 706
     (1998). We
    thus interpret the settlement agreement before us
    ‘‘according to general principles governing the con-
    struction of contracts. . . . [T]he language used [in a
    contract] must be accorded its common, natural, and
    ordinary meaning and usage where it can be sensibly
    applied to the subject matter of the contract. . . .
    Where the language of the contract is clear and unam-
    biguous, the contract is to be given effect according to
    its terms. . . . [Additionally], in construing contracts,
    we give effect to all the language included therein, as
    the law of contract interpretation . . . militates
    against interpreting a contract in a way that renders a
    provision superfluous.’’ (Citation omitted; internal quo-
    tation marks omitted.) Awdziewicz v. Meriden, 
    317 Conn. 122
    , 129–30, 
    115 A.3d 1084
     (2015). Furthermore,
    ‘‘[t]he interpretation of the intention of the parties to
    the settlement agreement is a question of fact . . . and
    we review such a determination by an administrative
    agency to determine if it is supported by substantial
    evidence.’’ (Citation omitted.) Connecticut Light &
    Power Co. v. Dept. of Public Utility Control, 
    219 Conn. 51
    , 66–67, 
    591 A.2d 1231
     (1991).
    The settlement agreement consists of five compo-
    nents: (1) the settlement agreement document itself,
    which contains sixteen conditions; see footnote 7 of
    this opinion; (2) the commission’s January 7, 2013
    approval of the settlement agreement;32 (3) the 2012
    plan, which was incorporated by reference into both the
    settlement agreement document and the commission’s
    motion to approve the settlement agreement; (4) six
    additional conditions that the commission attached to
    its approval; see footnote 10 of this opinion; and (5)
    the two architectural renderings. See footnote 9 of this
    opinion.
    Those materials contain little in the way of dimen-
    sional limitation on the proposed main building. The
    2012 plan is pivotal in that regard, as it was incorporated
    by reference into both the settlement agreement and
    the commission’s approval. The 2012 plan circum-
    scribes the parameters of the footprint of the main
    building. It is undisputed that the main building
    depicted in the 2018 plan sat on the same footprint as
    it did in the 2012 plan and did not intrude farther into
    the setback area, and the commission was presented
    with evidence to that effect.33 Accordingly, there was
    no horizontal expansion of that lawful nonconforming
    structure, nor has any party so claimed.
    Rather, the plaintiffs claim that the commission improp-
    erly approved a vertical expansion of the nonconform-
    ing main building. Whether the vertical extension of an
    existing footprint constitutes an impermissible expan-
    sion of a nonconformity depends on the particular lan-
    guage employed in the applicable zoning regulations.
    See E & F Associates, LLC v. Zoning Board of Appeals,
    
    320 Conn. 9
    , 12 n.3, 
    127 A.3d 986
     (2015) (noting that
    ‘‘variances were required because the vertical expan-
    sion of the building within the applicable setbacks con-
    stituted a prohibited expansion of the nonconforming
    use under the [Fairfield] zoning regulations’’); Munroe
    v. Zoning Board of Appeals, supra, 
    75 Conn. App. 811
    (concluding that vertical expansion of nonconforming
    structure through addition of second story caused ‘‘a
    substantial increase in the nonconformity’’ in contra-
    vention of Branford zoning regulations); Doyen v. Zon-
    ing Board of Appeals, 
    67 Conn. App. 597
    , 602, 612, 
    789 A.2d 478
     (vertical expansion of nonconforming struc-
    ture permitted under Essex zoning regulations), cert.
    denied, 
    260 Conn. 901
    , 
    793 A.2d 1088
     (2002).
    The regulations here proscribe the vertical expansion
    of nonconforming structures.34 The settlement agree-
    ment, however, contains no restriction on the height
    of the main building. Notably, the 2012 plan does not
    specify the height or volume of that building, and nei-
    ther the conditions included in the settlement agree-
    ment document nor the conditions imposed by the
    commission contain any such dimensions or height
    restrictions.35
    Although no height limitation is specified anywhere
    in the settlement agreement materials, the plaintiffs
    submit that such a limitation may be found in two other
    materials, namely, Wykeham’s proposed ‘‘university’’
    plans from a previous special permit application (school
    plans) and a set of plans that were submitted to the
    Department of Energy and Environmental Protection in
    December, 2012, as part of an application for a general
    permit to discharge from subsurface sewage disposal
    systems on the property (discharge permit plans).36 It
    nonetheless remains that the commission did not refer-
    ence the school plans or the discharge permit plans in
    either its motion to approve the settlement agreement
    or the conditions attached to its approval. Had the com-
    mission wanted to incorporate those plans into its
    approval of the settlement agreement, it certainly knew
    how to do so, as it had done with both the 2012 plan and
    the two architectural renderings. See Joseph General
    Contracting, Inc. v. Couto, 
    317 Conn. 565
    , 579, 
    119 A.3d 570
     (2015). In this regard, we note that the settlement
    agreement document that was before the commission
    described the 2012 plan as the ‘‘complete site plan’’
    for the proposed inn. Yet, the commission chose to
    incorporate only ‘‘the [2012 plan], the [two] architec-
    tural renderings . . . and the [six] conditions of
    approval’’ into its approval of the settlement agreement.
    Put simply, the school plans and the discharge permit
    plans are not part of the settlement agreement that was
    approved by the commission and the Superior Court.
    Although the settlement agreement did incorporate
    two architectural renderings, those ‘‘representative’’
    renderings do not contain any dimensions or numerical
    specifications. Moreover, the transcript of the January
    7, 2013 special meeting indicates that those renderings
    were offered merely for illustrative purposes regarding
    the design of the main building. See footnote 9 of this
    opinion. There is no indication whatsoever in the record
    before us that the commission considered those render-
    ings as accurate depictions of the height of the proposed
    main building; indeed, the height of the main building
    never was discussed at the commission’s January 7,
    2013 special meeting.
    At the public hearing held on the modification appli-
    cation five years later, Reese Owens, an architect,
    opined that the height of the main building that was
    approved as part of the settlement agreement could be
    extrapolated from a comparison of the architectural
    renderings and the discharge permit plans.37 Although
    that may be true, there is no indication in the record
    before us that commission members in 2013 ever made
    that comparison or intended to impose a height restric-
    tion on the main building stemming therefrom. We reit-
    erate that the height of the main building was a topic
    never broached at the January 7, 2013 special meeting.
    Moreover, the commission heard testimony at the
    2018 public hearing from Szymanski, a civil engineer
    who (1) was involved in the drafting of both the 2012
    and 2018 plans, (2) had participated in the 2013 special
    meeting, and (3) offered the architectural renderings
    in response to a question from the commission’s admin-
    istrative assistant as to the design of the main building.
    Szymanski unequivocally stated at the 2018 public hear-
    ing that the architectural renderings were provided sim-
    ply to illustrate ‘‘the architectural style’’ of the main
    building. The commission, as the sole arbiter of credibil-
    ity, was entitled to credit that testimony.38 See, e.g.,
    Cambodian Buddhist Society of Connecticut, Inc. v.
    Planning & Zoning Commission, 
    285 Conn. 381
    , 443,
    
    941 A.2d 868
     (2008).
    The commissioners also were presented with uncon-
    troverted evidence that the settlement agreement was
    a compromise between the parties intended to resolve
    the pending appeal of the denial of Wykeham’s special
    permit application, to which the commission was a
    party. In addition, the commission heard testimony
    from Peacocke, who also was a party to the settlement
    agreement. Peacocke stated: ‘‘I just [want] to remind
    members of the commission . . . that there were four
    attorneys who negotiated and drafted the [settlement
    agreement]. If we had intended to create an exclusion-
    ary agreement itemizing all and only those matters, we’d
    have said so, and we didn’t. . . . [W]e . . . never
    undertook to create a comprehensive agreement
    . . . .’’ As our Supreme Court has observed, ‘‘[w]e will
    not insert limitations into a contract when the parties
    did not do so themselves. . . . This is especially so
    when, as here, the agreement is between sophisticated
    . . . parties represented by counsel. . . . In these cir-
    cumstances, we presume the parties used definitive
    language to describe their agreement.’’ (Citations omit-
    ted.) Salce v. Wolczek, 
    314 Conn. 675
    , 690–91, 
    104 A.3d 694
     (2014); see also Williams v. Lilley, 
    67 Conn. 50
    , 59,
    
    34 A. 765
     (1895) (‘‘[w]e assume no right to add a new
    term to a contract’’). Those maxims apply here, as the
    settlement agreement was crafted by multiple attorneys
    and subjected to scrutiny at hearings before both the
    municipal zoning commission and the Superior Court.
    That settlement agreement contains no height limita-
    tion on the main building, and the record does not
    reveal an intent on the part of the commission to impose
    such a restriction in 2013. There is substantial evidence
    from which the commission, in approving the modifica-
    tion application in 2018, reasonably could conclude that
    no height restriction was intended to be included in the
    settlement agreement. We therefore reject the plaintiffs’
    claim that the commission improperly approved the
    vertical expansion of a nonconforming structure.
    For those same reasons, the plaintiffs’ claim that the
    commission improperly approved an expansion of the
    floor area or volume of the main building is unavailing.
    Significantly, no floor plans were included in the settle-
    ment agreement. Moreover, no floor plans were pre-
    sented to the commission in its review of the settlement
    agreement. The January 7, 2013 transcript indicates that
    the floor area and volume of the main building were
    never discussed at the special meeting.
    The settlement agreement likewise does not contain
    a restriction as to the floor area or volume of the main
    building. It is noteworthy that the settlement agreement
    does specifically address the maximum floor area of a
    different structure proposed on the property. Paragraph
    five of the settlement agreement states in relevant part:
    ‘‘The Inn’s spa and fitness center will be limited to the
    area within the building that is labeled ‘Fitness Building’
    on the Site Plan and cannot exceed floor area totaling
    more than 11,400 square feet SAVE THAT a single exer-
    cise room no larger than 3,800 square feet and con-
    taining only exercise equipment may be located within
    the ‘Main Building,’ labeled as such as depicted on the
    Site Plan. If the single exercise room is located in the
    Main Building, the size of the Fitness Building would
    then be reduced by the same amount so that the com-
    bined floor area devoted to spa and fitness facilities in
    the Fitness Building and Main Building cannot exceed
    11,400 square feet in total.’’ That restriction demon-
    strates that the parties to the settlement agreement
    were mindful of floor area considerations and knew
    how to incorporate such restrictions into that contract.
    They nevertheless did not include a floor area limitation
    for the main building in the settlement agreement, and
    we decline to insert such a limitation into that contract
    now. See, e.g., Salce v. Wolczek, supra, 
    314 Conn. 690
    –91
    (‘‘[w]e will not insert limitations into a contract when
    the parties did not do so themselves’’); R.T. Vanderbilt
    Co. v. Hartford Accident & Indemnity Co., 
    171 Conn. App. 61
    , 279 n.104, 
    156 A.3d 539
     (2017) (‘‘if the parties
    had intended that the [contract] would provide defense
    coverage . . . they easily could have said so
    expressly’’), aff’d, 
    333 Conn. 343
    , 
    216 A.3d 629
     (2019).
    We also note that all three commissioners who voted
    to approve the modification application in 2018 were
    members of the commission when it approved the 2013
    settlement agreement. See footnote 19 of this opinion.
    Those commission members were entitled to rely on
    their personal knowledge of the settlement agreement
    and the January 7, 2013 special meeting. See, e.g., Frito-
    Lay, Inc. v. Planning & Zoning Commission, 
    206 Conn. 554
    , 570, 
    538 A.2d 1039
     (1988) (‘‘commission members
    may legitimately utilize their personal knowledge in
    reaching a decision’’); Burnham v. Planning & Zoning
    Commission, 
    189 Conn. 261
    , 267, 
    455 A.2d 339
     (1983)
    (‘‘members of [a zoning commission] are entitled to take
    into consideration whatever knowledge they acquire by
    personal observation’’); Atlantic Refining Co. v. Zoning
    Board of Appeals, 
    150 Conn. 558
    , 562, 
    192 A.2d 40
     (1963)
    (‘‘[o]bviously, the members of the board had personal
    knowledge of the situation, and they were entitled to
    take that knowledge into consideration’’). One of those
    members, Nicholas N. Solley, voted against the approval
    of the settlement agreement in 2013. During delibera-
    tions on the 2018 modification application, another
    member who was not on the commission in 2013 stated
    to Solley, ‘‘You were there [in 2013] . . . and I would
    like to hear . . . what you were thinking’’ at that time.
    In response, Solley noted that, in considering the settle-
    ment agreement in 2013, the commission ‘‘didn’t even
    deliberate over . . . any elevations or any . . . floor
    plans’’ and stated that the commission ‘‘never approved
    specific floor plans.’’39 Solley also stated that, for pur-
    poses of comparing the 2018 plan to the settlement
    agreement, ‘‘we simply have no baseline from which
    to, other than [the 2012] plan, from which to draw a
    comparison . . . .’’ Commissioner David Werkhoven,
    who also was a member of the commission in 2013,
    similarly stated that the commission ‘‘never discussed
    volume requirements’’ during the special meeting to
    approve the settlement agreement. Werkhoven further
    noted that a ‘‘floor plan shows you rooms and how
    they’re divided . . . . We didn’t . . . get any of that.
    . . . We didn’t talk about that. . . . We talked about
    the general outline of the [main] building. . . . We
    didn’t say how they could use it or how they couldn’t
    use it.’’ In voting to approve the modification applica-
    tion, those commissioners were free to rely on their
    personal knowledge of the 2013 settlement agreement
    proceeding.
    On our review of the record, we conclude that sub-
    stantial evidence exists from which the commission
    could conclude that no floor area or volume restrictions
    were included in the settlement agreement. The Supe-
    rior Court thus properly determined that the commis-
    sion did not authorize an impermissible expansion of
    a nonconforming structure when it approved the modifi-
    cation application.
    II
    The plaintiffs also claim that the court improperly
    concluded that the applicant’s proposal did not consti-
    tute an impermissible expansion of a nonconforming
    use. We disagree.
    The following additional facts are relevant to that
    claim. Subsequent to the commission’s approval of the
    settlement agreement, the regulations were amended
    to require at least 500 feet of frontage ‘‘on a state high-
    way’’ for any ‘‘Tourist Home or Inn’’; see Washington
    Zoning Regs., § 13.9.B; which the property here conced-
    edly lacks. As a result, the operation of an inn on the
    property is a nonconforming use. Although that noncon-
    forming use is entitled to protection under state law;
    see General Statutes §§ 8-2 (a) and 8-26a; it cannot be
    expanded under established precedent and §§ 17.1 and
    17.3.A of the regulations. See part I A of this opinion.
    A
    On appeal, the plaintiffs contend that the commis-
    sion, in granting the modification application, improp-
    erly expanded the scope of that nonconforming use.
    They argue that only those accessory uses specifically
    mentioned in the settlement agreement are permitted
    on the property. See footnote 7 of this opinion. The
    commission counters that the settlement agreement
    neither explicitly nor implicitly limited the scope of
    permissible accessory uses. We agree with the commis-
    sion.
    The regulations in the present case define an ‘‘acces-
    sory use’’ as ‘‘[a] use customarily incidental and subordi-
    nate to a main use and located on the same lot with
    such main use.’’ Washington Zoning Regs., § 21.1.7; see
    also O & G Industries, Inc. v. Planning & Zoning
    Commission, 
    232 Conn. 419
    , 421 n.1, 
    655 A.2d 1121
    (1995) (‘‘[a]ccessory uses are, by definition, uses
    located on the same lot, and must be subordinate and
    customarily incidental to, the principal use’’ (internal
    quotation marks omitted)). The regulations do not con-
    tain an explicit list of permitted accessory uses for inns
    in Washington. At the same time, the regulations define
    a ‘‘lot’’ in relevant part as a ‘‘parcel of land occupied
    or capable of being occupied by one principal building
    and the accessory buildings or uses customarily inci-
    dental to it . . . .’’ Washington Zoning Regs., § 21.1.38.
    The parties agree that accessory uses are permitted on
    a lot used principally as an inn. They disagree about the
    extent to which the settlement agreement here limits
    accessory uses on the property.
    As we have noted, the proper construction of a settle-
    ment agreement is governed by principles of contract
    interpretation. See part I B 1 of this opinion. ‘‘A contract
    is unambiguous when its language is clear and conveys
    a definite and precise intent. . . . In contrast, a con-
    tract is ambiguous if the intent of the parties is not
    clear and certain from the language of the contract
    itself. . . . If the language of the contract is susceptible
    to more than one reasonable interpretation, the con-
    tract is ambiguous.’’ (Internal quotation marks omitted.)
    Santos v. Massad-Zion Motor Sales Co., 
    160 Conn. App. 12
    , 18, 
    123 A.3d 883
    , cert. denied, 
    319 Conn. 959
    , 
    125 A.3d 1013
     (2015).
    The settlement agreement here lacks any language
    addressing accessory uses generally or indicating that
    unspecified accessory uses are prohibited on the prop-
    erty. At the same time, the settlement agreement does
    contain explicit limitations on three accessory uses,
    namely, the proposed restaurant,40 the proposed spa
    and fitness center,41 and tented events held on the prop-
    erty.42 No other accessory uses are specified in that
    agreement. Because the settlement agreement is sus-
    ceptible to more than one reasonable interpretation as
    to the scope of permitted accessory uses, we agree
    with the commission that the settlement agreement is
    ambiguous in that regard.
    ‘‘When a contract is ambiguous the [finder of fact]
    must consider extrinsic evidence and make factual find-
    ings as to the parties’ intent.’’ Chiulli v. Chiulli, Supe-
    rior Court, judicial district of Hartford, Docket No. CV-
    XX-XXXXXXX-S (July 8, 2014) (reprinted at 
    161 Conn. App. 639
    , 650, 
    127 A.3d 1147
    ), aff’d, 
    161 Conn. App. 638
    , 
    127 A.3d 1146
     (2015). ‘‘The interpretation of the intention
    of the parties to the settlement agreement is a question
    of fact . . . and we review such a determination by an
    administrative agency to determine if it is supported by
    substantial evidence.’’ (Citation omitted.) Connecticut
    Light & Power Co. v. Dept. of Public Utility Control,
    supra, 
    219 Conn. 66
    –67.
    The record before us contains evidence to substanti-
    ate a finding that the parties did not intend to restrict
    accessory uses on the property to only those addressed
    in the settlement agreement. Although the record indi-
    cates that the parties deliberately incorporated specific
    plans into that agreement, such as the 2012 plan and
    the architectural renderings, they did not include any
    floor plans depicting the uses contemplated for the
    interior areas of the main building.43 The transcript of
    the January 7, 2013 special meeting contains no discus-
    sion of the scope of accessory uses on the property,
    and the main building in particular, nor were any floor
    plans presented at that hearing. In addition, the commis-
    sion heard testimony during the public hearing on the
    modification application from Peacocke, who was a
    party to the settlement agreement. Peacocke empha-
    sized that ‘‘there were four attorneys who negotiated
    and drafted the [settlement agreement]. If we had
    intended to create an exclusionary agreement itemizing
    all and only those matters, we’d have said so, and we
    didn’t. . . . [W]e . . . never undertook to create a
    comprehensive agreement . . . .’’ The commission
    was entitled to credit that testimony by a party to the
    settlement agreement. See, e.g., Gerlt v. Planning &
    Zoning Commission, 
    290 Conn. 313
    , 322, 
    963 A.2d 31
    (2009) (assessing credibility of witnesses is sole prov-
    ince of zoning commission); see also Landry v. Spitz,
    
    102 Conn. App. 34
    , 49 n.9, 
    925 A.2d 334
     (2007) (‘‘[t]his
    court will not revisit credibility determinations’’ in case
    regarding interpretation of settlement agreement).
    The substantial evidence standard ‘‘is highly deferen-
    tial and permits less judicial scrutiny than a clearly
    erroneous or weight of the evidence standard of
    review.’’ (Internal quotation marks omitted.) Palomba-
    Bourke v. Commissioner of Social Services, 
    312 Conn. 196
    , 202, 
    92 A.3d 932
     (2014). On our review of the whole
    record, we conclude that substantial evidence exists
    to support a finding that the parties to the settlement
    agreement did not intend to restrict accessory uses
    on the property to only those specifically mentioned
    therein.
    B
    We turn next to the question of whether the uses at
    issue constitute permissible accessory uses. On appeal,
    the plaintiffs maintain that the inclusion of a bar, a
    ‘‘prefunction’’ meeting area, and a ‘‘meeting room/
    library’’ in the 2018 plan approved by the commission
    are not permitted accessory uses for inns in Washing-
    ton.44 We do not agree.
    ‘‘[I]n the land use context, the term ‘accessory use’
    traditionally connotes a relationship with the primary
    use.’’ Morgenbesser v. Aquarion Water Co. of Connecti-
    cut, 
    276 Conn. 825
    , 831, 
    888 A.2d 1078
     (2006). As our
    Supreme Court has explained, ‘‘[a]n accessory use is
    determined specifically by reference to the primary use
    of the property to which it is incidental.’’ Loring v.
    Planning & Zoning Commission, 
    287 Conn. 746
    , 767,
    
    950 A.2d 494
     (2008). ‘‘[An] accessory use [is] a use
    which is customary in the case of a permitted use and
    incidental to it. . . . An accessory use under a zoning
    law is a use which is dependent on or pertains to the
    principal or main use. . . . The word incidental as
    employed in a definition of accessory use incorporates
    two concepts. It means that the use must not be the
    primary use of the property but rather one which is
    subordinate and minor in significance. . . . But inci-
    dental, when used to define an accessory use, must also
    incorporate the concept of reasonable relationship with
    the primary use. It is not enough that the use be subordi-
    nate; it must also be attendant or concomitant. To
    ignore this latter aspect of incidental would be to permit
    any use which is not primary, no matter how unrelated
    it is to the primary use. . . . In examining the use in
    question, it is not enough to determine that it is inciden-
    tal in the two meanings of that word as discussed [pre-
    viously]. The use must be further scrutinized to deter-
    mine whether it has commonly, habitually and by long
    practice been established as reasonably associated with
    the primary use. . . . In situations where there is no
    . . . specific provision in the ordinance, the question
    is the extent to which the principal use as a matter of
    custom . . . carries with it an incidental use so that
    as a matter of law, in the absence of a complete prohibi-
    tion of the claimed incidental use in the ordinance, it
    will be deemed that the legislative intent was to include
    it.’’ (Internal quotation marks omitted.) 
    Id., 753
    –54.
    ‘‘[W]hether a particular use qualifies as an accessory
    use is ordinarily a question of fact for the zoning author-
    ity, to be determined by it with a liberal discretion.’’
    (Internal quotation marks omitted.) Clifford v. Plan-
    ning & Zoning Commission, 
    280 Conn. 434
    , 451, 
    908 A.2d 1049
     (2006). On appeal, a zoning commission’s
    determination ‘‘is subject to a very narrow, deferential
    scope of review’’; id.; and must be sustained if there is
    substantial evidence in the record to support it. 
    Id., 452
    ;
    see also Loring v. Planning & Zoning Commission,
    supra, 
    287 Conn. 756
    .
    The primary use of the property here is an inn.
    Although the regulations do not define the term ‘‘inn,’’
    the evidence in the record before us indicates that the
    commission had used the Mayflower Inn, which, at all
    relevant times, was the only existing inn in town, ‘‘as
    a de facto model of what [the term] inn means in Wash-
    ington.’’ The record includes uncontroverted evidence
    that the Mayflower Inn featured a bar, two libraries, and
    ‘‘six separate’’ meeting areas.45 The record also contains
    evidence that ‘‘all’’ of the accessory uses proposed by
    the applicant ‘‘are typical of what [i]nns do’’ and that
    the proposed uses in question were of ‘‘a smaller scale
    than what is currently offered [and] what has been
    offered at [the Mayflower Inn] for decades.’’ On that
    evidence, the commission reasonably could find that
    the three uses in question had commonly, habitually,
    and by long practice been established as reasonably
    associated with the primary use of an inn in Washington.
    See Loring v. Planning & Zoning Commission, supra,
    
    287 Conn. 754
    .
    The plaintiffs further claim that the court misapplied
    the precedent of our Supreme Court in Zachs v. Zoning
    Board of Appeals, supra, 
    218 Conn. 324
    . We disagree.
    In Zachs, the court explained that, ‘‘[i]n deciding
    whether [a] current activity is within the scope of a
    nonconforming use consideration should be given to
    three factors: (1) the extent to which the current use
    reflects the nature and purpose of the original use; (2)
    any differences in the character, nature and kind of use
    involved; and (3) any substantial difference in effect
    upon the neighborhood resulting from differences in
    the activities conducted on the property.’’ 
    Id., 332
    . Here,
    the original use memorialized in the settlement agree-
    ment and the use approved by the granting of the modifi-
    cation application are one and the same: an inn on the
    property with accessory uses typical of inns in Wash-
    ington. Indeed, the commission required, as the very
    first condition attached to its 2018 approval, that ‘‘[t]his
    approval remains subject to all of the conditions
    and limitations set forth in the settlement agreement
    approved by the commission on January 7, 2013, together
    with the conditions of approval that were incorporated
    into the commission’s motion for approval of the settle-
    ment agreement.’’ (Emphasis added.) Moreover, in
    approving the modification application, the commission
    imposed additional, more restrictive limitations on the
    use of the property.46 Last, from the evidence adduced
    at the public hearing, the commission reasonably could
    find that the use of the property proposed in the modifi-
    cation application would not result in a substantial dif-
    ference in effect on the surrounding neighborhood.
    In light of the foregoing, we conclude that there is
    evidence in the record to substantiate a finding that the
    proposed uses in question were within the scope of the
    lawful nonconforming use memorialized in the settle-
    ment agreement. The commission’s determination that
    those uses constituted permissible accessory uses,
    therefore, was proper.
    III
    As a final matter, the plaintiffs claim that the court
    ‘‘failed to require compliance with [the] special permit
    standards’’ contained in the regulations. We do not agree.
    ‘‘In an appeal from a decision of a zoning commission,
    the burden of overthrowing the decision . . . rest[s]
    squarely upon the appellant.’’ (Internal quotation marks
    omitted.) St. Joseph’s High School, Inc. v. Planning &
    Zoning Commission, supra, 
    176 Conn. App. 602
    ; see
    also Blaker v. Planning & Zoning Commission, 
    212 Conn. 471
    , 478, 
    562 A.2d 1093
     (1989) (party challenging
    action of zoning commission bears burden of proving
    commission acted improperly); Chouinard v. Zoning
    Commission, 
    139 Conn. 728
    , 731, 
    97 A.2d 562
     (1953)
    (‘‘[t]he burden of proof is always on the plaintiff’’ who
    challenges zoning commission determination). On our
    review of the record before us, we conclude that the
    plaintiffs have not met that burden.
    The plaintiffs contend that the commission’s approval
    of the modification application contravened § 13.1.B of
    the regulations. That claim requires little discussion.
    Section 13.1.B of the regulations provides in relevant
    part: ‘‘[T]he Commission may approve, modify, or
    renew a Special Permit in a district where such uses
    are permitted. . . .’’ The regulations previously author-
    ized the use of the property as an inn, and the settlement
    agreement approved by the Superior Court and filed in
    the Washington land records; see footnote 16 of this
    opinion; plainly permits the use of the property in that
    manner. The settlement agreement, to which the com-
    mission was a party, also provided a mechanism for the
    modification of the plans contained in that agreement,
    which required commission approval. See footnote 10
    of this opinion. In light of those undisputed facts, the
    plaintiff’s claim that the commission could not entertain
    an application to modify the plans contained in the
    settlement agreement is untenable.
    The plaintiffs also argue that the commission failed
    to consider the standards set forth in §§ 13.1.C.1 and
    13.1.C.2 of the regulations47 and claim that the commis-
    sion ‘‘did not make findings’’ related thereto. With
    respect to the latter contention, we already have noted
    that the commission did not render a ‘‘formal, official,
    collective statement of reasons for its action’’; Protect
    Hamden/North Haven from Excessive Traffic & Pollu-
    tion, Inc. v. Planning & Zoning Commission, 
    220 Conn. 527
    , 544, 
    600 A.2d 757
     (1991); as required by
    General Statutes § 8-3c (b), and did not issue a detailed
    decision with explicit findings. See footnote 21 of this
    opinion. We are hesitant to ascribe fault in that regard,
    as noncompliance with that statutory imperative is com-
    monplace in practice and condoned by decades of
    appellate authority.48
    As our Supreme Court has observed, ‘‘an agency’s
    statutorily required finding cannot be overruled simply
    because the agency’s decision is not explicitly stated
    on the record.’’ Samperi v. Inland Wetlands Agency,
    
    226 Conn. 579
    , 595, 
    628 A.2d 1286
     (1993). When a trial
    court’s decision lacks specificity, this court presumes
    that the trial court made all necessary findings that are
    supported by the record. See, e.g., Brett Stone Paint-
    ing & Maintenance, LLC v. New England Bank,
    
    143 Conn. App. 671
    , 681, 
    72 A.3d 1121
     (2013); Young v.
    Commissioner of Correction, 
    104 Conn. App. 188
    , 190
    n.1, 
    932 A.2d 467
     (2007), cert. denied, 
    285 Conn. 907
    ,
    
    942 A.2d 416
     (2008). That precept applies equally to our
    review of the decisions of municipal land use agencies,
    whose conduct carries ‘‘a strong presumption of regu-
    larity . . . .’’ Murach v. Planning & Zoning Commis-
    sion, 
    196 Conn. 192
    , 205, 
    491 A.2d 1058
     (1985); see also
    Hills v. Zoning Commission, 
    139 Conn. 603
    , 608, 
    96 A.2d 212
     (1953) (zoning commission action entitled to
    ‘‘every reasonable presumption of validity’’); Levine v.
    Zoning Board of Appeals, 
    124 Conn. 53
    , 57, 
    198 A. 173
    (1938) (‘‘[t]here is a presumption that [municipal land
    use agencies] have acted . . . upon valid reasons’’).
    When a zoning commission fails to articulate explicit
    factual findings to support its decision, a reviewing
    court is obligated to ‘‘search the entire record to find
    a basis for the commission’s decision . . . . [I]f any
    reason culled from the record demonstrates a real or
    reasonable relationship to the general welfare of the
    community, the decision of the commission must be
    upheld.’’ (Emphasis in original; internal quotation
    marks omitted.) Graff v. Zoning Board of Appeals, 
    277 Conn. 645
    , 670, 
    894 A.2d 285
     (2006); see also Azzarito
    v. Planning & Zoning Commission, 
    79 Conn. App. 614
    ,
    618, 
    830 A.2d 827
     (reviewing court must search record
    to find basis for decision when commission ‘‘did not
    make specific factual findings to support its approval
    of the application’’), cert. denied, 
    266 Conn. 924
    , 
    835 A.2d 471
     (2003).
    The record here indicates that the commission, over
    the course of three lengthy nights of deliberations, gave
    ample attention to both the propriety and the impact
    of the proposed use of the property. The commission
    debated the impact of the proposed use on the sur-
    rounding neighborhood and discussed in detail both
    parking and traffic concerns.49 The commission also
    gave significant consideration to the intensity of the
    proposed use, which fostered disagreement among
    some commissioners. In addition, the commission con-
    sidered the proposed use in relation to its rural setting,
    consistent with the stated purpose of the R-1 Farming
    and Residential zoning district. See footnote 4 of this
    opinion.
    The record also indicates that the commission was
    cognizant of the fact that the only other inn in Washing-
    ton was located ‘‘right down the road’’ from the property
    and had featured comparable primary and accessory
    uses ‘‘for decades.’’ The commission reasonably could
    find, on the evidence adduced at the public hearing,
    that the existence of a similar inn in the same area of
    town supported a conclusion that the use proposed by
    the applicant comported with the intent and objectives
    of the regulations, as well as the town’s plan of conser-
    vation and development. See Washington Zoning Regs.,
    §§ 13.1.C.1 and 13.1.C.2.
    Moreover, with respect to the impact on adjacent
    property, the commission was well aware of the pro-
    tracted procedural history of this proposed use of the
    property and the fact that owners of surrounding prop-
    erties had been involved in the 2008 special permit
    application proceedings, the 2013 settlement agreement
    proceedings, and the modification application now at
    issue. The record of both the public hearing and the
    commission’s deliberations demonstrates that the com-
    missioners were sensitive to the impact of the proposed
    use on the neighborhood, which led them to impose
    additional restrictions on the use of the property as
    conditions of their approval. See footnote 46 of this
    opinion.
    In that vein, it bears emphasis that the proposal
    before the commission in 2018 was not a novel one.
    Both the use of the property as an inn and the ‘‘location,
    type, character, size, scale, proportion, appearance, and
    intensity’’ of that use; Washington Zoning Regs.,
    § 13.1.C.2; had been the subject of various proceedings
    before the commission, as well as the Superior Court,
    over the course of a decade. On the evidence before
    it, the commission reasonably could conclude that the
    changes memorialized in the 2018 plan; see footnote 15
    of this opinion; did not materially alter those considera-
    tions.
    It is true that the commission did not explicitly refer-
    ence each and every special permit standard contained
    in the regulations during its many hours of deliberations
    on August 7, 27 and 28, 2018. It remains that the commis-
    sion engaged in detailed discussion as to the propriety
    of the proposed use, particularly with respect to its
    impact on the surrounding area, and imposed additional
    restrictions on the use of the property. On our thorough
    review of the record, we cannot agree with the plaintiffs’
    contention that the commission ignored the considera-
    tions memorialized in §§ 13.1.C.1 and 13.1.C.2 of the
    regulations. To the contrary, the commission reason-
    ably could conclude, on the basis of the documentary
    and testimonial evidence before it, that the use pro-
    posed by the applicant comported with the intent and
    objectives of the regulations, as well as the town’s plan
    of conservation and development, and that the pro-
    posed use was in harmony with the orderly develop-
    ment of the town and surrounding neighborhood.
    The plaintiffs, who bore the burden of proof in this
    administrative appeal, have not demonstrated that the
    modification application violated any special permit
    standard contained in the regulations. They thus have
    not rebutted the strong presumption of regularity that
    attaches to the conduct of zoning commissions in this
    state. See Murach v. Planning & Zoning Commission,
    supra, 
    196 Conn. 205
    ; cf. Frito-Lay, Inc. v. Planning &
    Zoning Commission, supra, 
    206 Conn. 572
    –73 (pre-
    sumption of regularity rebutted when record estab-
    lished that commission did not act within prescribed
    legislative powers). Accordingly, we conclude that the
    Superior Court properly dismissed the plaintiffs’ appeal.
    The judgment is affirmed.
    In this opinion the other judges concurred.
    1
    In their complaint, the plaintiffs also named Erika Klauer and Teresa
    Rosen Peacocke as defendants, as they were either parties to the settlement
    agreement at issue or successors to parties thereto.
    2
    Unless otherwise indicated, all references to the regulations in this opin-
    ion pertain to the September 12, 2017 revision thereof.
    3
    ‘‘In hearing appeals from decisions of a planning and zoning commission,
    the Superior Court acts as an appellate body.’’ North Haven Holdings Ltd.
    Partnership v. Planning & Zoning Commission, 
    146 Conn. App. 316
    , 319
    n.2, 
    77 A.3d 866
     (2013).
    4
    The regulations contain an explicit statement of purpose regarding the
    ‘‘R-1 Farming and Residential’’ zoning district. Section 4.1 of the regulations
    provides: ‘‘It is intended that development in this district, which covers most
    of the Town of Washington, will consist primarily of scattered residential,
    agricultural and related uses, open space, low intensity recreational activi-
    ties, and other uses that will retain the rural character and natural beauty
    of the Town.’’
    5
    The commission did not provide a collective statement of the reasons
    for its denial of the special permit, as required by General Statutes § 8-3c
    (b). See Wykeham Rise, LLC v. Washington, Superior Court, judicial district
    of Litchfield, Docket No. CV-XX-XXXXXXX-S (October 11, 2011).
    6
    For almost one century, the property was used for educational purposes.
    ‘‘From 1907 until 1988, the property was the site of the Wykeham Rise
    School, a private college preparatory boarding school for girls. In 1988, the
    property was sold to Swiss Hospitality Institute, which operated a postsec-
    ondary residential hotel school between 1992 and 2003.’’ Peacocke v. Zoning
    Commission, Superior Court, judicial district of Litchfield, Docket No. CV-
    XX-XXXXXXX-S (February 7, 2013).
    7
    The sixteen conditions contained in the settlement agreement state:
    ‘‘1. The Inn’s complete site plan is represented in the attached document
    as Overall Site Plan for Applicant Matthew & Erika Klauer Development:
    Wykeham Project Date: July 8, 2011 Scale 1’’ = 60’ SHEET 050.1 Revised to
    11/19/12, Prepared by Arthur H. Howland & Associates P.C. (‘Site Plan’).
    ‘‘2. The Inn will contain a maximum of fifty-four (54) guest room units
    (‘Units’).
    ‘‘3. There will be a maximum of one hundred (100) parking spaces provided
    on the Property. There will be no ‘overflow’ parking.
    ‘‘4. The Inn’s restaurant shall be open to the public but shall have a total
    maximum seating capacity of sixty-eight (68) seats during normal operations,
    excluding weddings, or ‘paid for events.’ Of the maximum seating capacity,
    no more than thirty (30) seats shall be outdoor seating.
    ‘‘5. The Inn’s spa and fitness center will be limited to the area within the
    building that is labeled ‘Fitness Building’ on the Site Plan and cannot exceed
    floor area totaling more than 11,400 square feet SAVE THAT a single exercise
    room no larger than 3,800 square feet and containing only exercise equipment
    may be located within the ‘Main Building,’ labeled as such as depicted on
    the Site Plan. If the single exercise room is located in the Main Building,
    the size of the Fitness Building would then be reduced by the same amount
    so that the combined floor area devoted to spa and fitness facilities in the
    Fitness Building and Main Building cannot exceed 11,400 square feet in
    total. There shall be no treatment rooms in the Main Building under any
    circumstances and treatment rooms in the Fitness Building may not be used
    for overnight stays. Wykeham will not issue ‘day passes’ for the spa and
    fitness center or for any such exercise room.
    ‘‘6. The existing driveway of the Property that intersects Bell Hill Road
    will be permanently abandoned.
    ‘‘7. There will be no amplified sound on the grounds or outside the foot-
    prints of all fully constructed and enclosed buildings at any time. Non-
    amplified sound is allowed; however, non-amplified music must cease 30
    minutes after local sunset.
    ‘‘8. The pool house shall be permitted to serve alcohol but will not have
    any grill or cooking equipment. There shall be no outside grill on the Prop-
    erty. The pool house and pool shall open no earlier than 8:00 a.m. and close
    no later than at 8:00 p.m. each day. Wykeham shall use best efforts to
    minimize noise or raucous behavior at the pool house or pool. All exterior
    lights shall be subject to the lighting standards of the [regulations] in effect
    at the time this Agreement is fully executed by the parties herein.
    ‘‘9. There shall be no more than twenty-four (24) tented events between
    and only during the period from May 1 through October 31 of each calendar
    year and no more than one (1) tented event may be held per day. Tented
    events may be held in two general locations, the first being north of the
    Main Building (as those specific locations are depicted on the Site Plan)
    and the second being south of the Main Building (the specific south side
    locations are as depicted on the Site Plan.) Of the twenty-four (24) tented
    events, up to but no more than twelve (12) tented events may occur on the
    south side of the Main Building during any one calendar year. The balance
    of the twenty-four (24) total number of tented events that may be held in
    a calendar year, less the actual number of tented events not to exceed
    twelve (12) that occur on the south side in any calendar year, shall be
    allowed on the north side. No buildings, tents or other structures shall be
    constructed, placed or erected above, or on the ground in the Restricted
    Area as depicted on the Site Plan. No permanent or temporary parking is
    permitted in the Restricted Area. No food or beverages, including but not
    limited to, alcohol beverages, shall be prepared or served in the
    Restricted Area.
    ‘‘10. A separate ‘Stipulated Judgment’ by and between Wykeham and
    Federer relating to Wykeham Rise LLC v. Eric A. Federer, et ux., Docket
    No. LLI-CV-XX-XXXXXXX-S, [judicial district] of Litchfield at Litchfield, will be
    signed by the parties therein and filed with the court for approval contempo-
    raneously with the submission for approval of this Agreement by the court.
    ‘‘11. Any amendments to this Settlement Agreement must be consented
    to by all the parties herein or their heirs, successors or assigns.
    ‘‘12. If any provision of this settlement agreement is deemed unenforceable
    or against public policy by a court of competent jurisdiction, such provision
    shall be deemed severable from the remainder of the Agreement and shall
    not affect any other provision or, if such provision should not be wholly
    severable then, to the maximum extent possible, the remainder of this
    Agreement shall be modified so as to maintain the original intent and remain
    in full force and effect.
    ‘‘13. Each of the parties represent that he, she or it has the complete
    authorization and power to execute this Agreement in an individual capacity,
    on behalf of an LLC, or Commission as the case may be and that all necessary
    approvals, signatures or consents of any other person or entity has been
    obtained and that this Agreement is a valid and binding obligation of the
    individuals, Wykeham Rise, LLC and the Commission and such Agreement
    does not violate any law, rule, regulation, contract or agreement otherwise
    enforceable against the respective parties.
    ‘‘14. This settlement agreement shall be construed in accordance with the
    laws of the State of Connecticut.
    ‘‘15. Once this Settlement Agreement has its Approval, Wykeham shall
    give up and surrender its two existing approvals for a school granted by
    the Commission on December 27, 2010, and February 14, 2012.
    ‘‘16. This Settlement Agreement may be signed in counterparts and the
    parties may rely on facsimile or email copies provided to each as long as
    the originals are thereafter provided so that an original composed of all
    original counterparts may be presented to the Court for approval.’’
    8
    The record before us contains the minutes of the January 7, 2013 special
    meeting and a partial transcript that was provided to the commission by
    Attorney Gail E. McTaggart as part of her memorandum to the commission
    dated July 23, 2018. In that memorandum, McTaggart states: ‘‘[E]xcluded
    [from the special meeting transcript] are [forty] minutes of public comment
    (and the few replies by [the commission’s counsel and Wykeham’s engi-
    neer]). Once public comment was closed, the remainder is fully transcribed,
    except for one [thirteen] minute discussion about construction on Sundays
    (and a brief discussion of building materials).’’
    9
    The transcript of the January 7, 2013 special meeting indicates that two
    architectural renderings were provided to the commission to illustrate the
    look of the proposed inn. Those renderings were offered in response to a
    question from the commission’s administrative assistant, Janet M. Hill, who
    asked: ‘‘I thought the rustic country kind of architecture would be back,
    but now it sounds like we’re at the school application [design] and you’ve
    got a factory warehouse. Which is it? For the architecture?’’ In response,
    Paul S. Szymanski, a civil engineer and president of Arthur H. Howland &
    Associates, P.C., stated: ‘‘We can give a—would you like a representative
    rendering for the record? It doesn’t look exactly like the school.’’ When Hill
    replied in the affirmative, Szymanski shared those renderings and explained
    that, ‘‘what we did was we significantly . . . improved the rooflines, adding
    gable ends throughout . . . breaking up the windows . . . adding addi-
    tional glass in several places. . . . [A]nd breaking up what previously looked
    like one extended building.’’ When the commission later prepared to make
    a motion to approve the settlement agreement, its legal counsel suggested
    referencing those ‘‘renderings,’’ which were marked as ‘‘rendering ‘A’ and
    rendering ‘B.’ ’’
    10
    A printed copy of one page of the commission’s prior motion to approve
    the special permit to operate a school on the property, which contained
    seven conditions of approval, was marked ‘‘1/7/13 Proposed Conditions—
    No #5’’ and was signed by Chairman Gary Fitzherbert. One condition, which
    was listed as number five on that document and pertained to the sale of
    liquor, was crossed out. The remaining six conditions state:
    ‘‘1. All modifications to the approved plans must be approved by the
    [commission] or its authorized agent prior to implementation,
    ‘‘2. As-built drawings shall be submitted to the [commission] upon the
    completion of the foundations and again upon completion of framing. The
    as-built drawings must be approved by the [c]ommission or its authorized
    agent before commencement of further construction. The [c]ommission
    may, at the expense of the applicant, submit such drawings to a professional
    for evaluation,
    ‘‘3. Outside construction may take place only between 7:00 a.m. and 5:00
    p.m. Monday through Friday and between 8:00 a.m. and 4:00 p.m. on Saturday
    and Sunday. No blasting, no operation of heavy equipment, and no site
    work, are permitted on Saturday or Sunday, before 8:00 a.m. on Monday
    through Friday, and on Memorial Day, Fourth of July, and Labor Day,
    ‘‘4. A performance bond, in the form of an irrevocable letter of credit
    from a financial institution with offices in Connecticut, in an amount to be
    determined in consultation with the [c]ommission’s attorney, by an engineer
    approved by the [c]ommission and paid for by the applicant, shall be secured
    before disturbance of the site begins,
    ‘‘[5.] The applicant shall, in addition to the proposed buffering, intersperse
    a sufficient number of evergreen trees with the existing and proposed vegeta-
    tion to reasonably buffer the lower parking lot visibility from Wykeham
    Road, and
    ‘‘[6.] Benchmark elevations for the building height shall be established
    for each building per Section 11.7.2.3 of the [regulations].’’
    11
    General Statutes § 8-8 (n) provides in relevant part: ‘‘No [zoning] appeal
    . . . shall be withdrawn and no settlement between the parties to any such
    appeal shall be effective unless and until a hearing has been held before
    the Superior Court and such court has approved such proposed withdrawal
    or settlement.’’
    12
    On January 3, 2013, mere weeks before the settlement agreement was
    approved by the court; see Wykeham Rise, LLC v. Zoning Commission,
    Docket No. CV-XX-XXXXXXX-S, 
    2013 WL 951156
     (Conn. Super. February 5,
    2013); the plaintiffs, along with Mitchell J. Solomon, trustee for the Mitchell
    J. Solomon Revocable Trust, filed a motion to intervene in the pending
    appeal of the commission’s 2008 decision to deny Wykeham’s special permit
    request. In denying that motion, the court stated in relevant part: ‘‘The
    appeal began on December 29, 2008, and the motion to intervene was not
    filed until January 3, 2013, a delay of four years. The appeal has already
    been heard and decided by the Superior Court and appealed to the Appellate
    Court. The proposed intervenors admit in their motion to intervene that
    they ‘have a track record of involvement in various zoning applications filed
    by the plaintiff for the same property as the subject appeal.’ They make the
    extremely weak argument that they decided not to intervene in this case
    because it involves a denial of the project. They must have been well aware
    that three other neighbors intervened and that the appeal to the Appellate
    Court would involve a preargument conference for the purpose of trying
    to settle the matter. It is hard to imagine a more untimely motion to intervene.
    The delay and prejudice to the present parties would be extreme if the
    motion to intervene is granted. The parties have spent considerable time
    and expense to bring the appeal to the point that . . . it can be settled.
    The intervention would prevent the settlement from taking place because
    the proposed intervenors oppose it and there can be no settlement if one
    or more of the parties to the case do not support it.’’ Wykeham Rise, LLC
    v. Zoning Commission, Superior Court, judicial district of Litchfield, Docket
    No. CV-XX-XXXXXXX-S (February 4, 2013) (
    55 Conn. L. Rptr. 479
    , 480).
    13
    No appeal was taken from the judgment approving the settlement agree-
    ment. In all subsequent proceedings before the commission and the Superior
    Court, the parties agreed that the commission’s 2013 approval of the settle-
    ment agreement was tantamount to special permit approval to construct
    an inn on the property in accordance with the 2012 plan and the conditions
    specified in the settlement agreement, and no claim to the contrary has
    been raised in this appeal. Indeed, the plaintiffs repeatedly refer to the ‘‘2013
    special permit’’ in their principal appellate brief.
    14
    The 2018 plan was revised further on March 20, June 18 and July 2,
    2018, in ways immaterial to the present appeal.
    15
    As part of that application, the applicant submitted a letter from Paul S.
    Szymanski, a civil engineer and president of Arthur H. Howland & Associates,
    P.C., ‘‘to clarify and note all modifications [contained in the 2018 plan] in
    comparison to the original approved site plan as part of the settlement
    agreement. These are the only modifications to the [2012 plan] requested:
    ‘‘1. Regrading along the rear and east side of the Main Building.
    ‘‘2. Addition of a retaining wall on the east side of the building and minor
    modification to the existing retaining wall already approved on the east side
    of the Main Building.
    ‘‘3. Removal of the [twenty air conditioning] pads at the rear of the
    Main Building.
    ‘‘4. Addition of [three] emergency egress landings at the Main Building,
    [three] emergency egress landings at the Pool House (added since last Public
    Hearing) and [one] emergency egress landing at the Spa House (added since
    last Public Hearing) with associated gathering areas and pathways to comply
    with the Building Code.
    ‘‘5. Since the last Public Hearing, addition of a pull-off area approximately
    [five foot by twenty foot] adjacent to the driveway in front of the Spa House
    to satisfy Building Code requirements [of the Americans with Disabilities
    Act of 1990, 42 U.S.C. § 12131 et seq.]. This necessitated moving the Spa
    House [five] feet closer to the drive.’’
    Paul S. Szymanski concluded that letter by stating that ‘‘[t]hese are the
    only revisions being requested and are graphically represented on [the 2018
    plan].’’ (Emphasis in original.)
    16
    The commission’s notice of approval of the settlement agreement was
    filed in the Washington land records at volume 231, pages 1131–32.
    17
    Meetings scheduled for May 15 and June 25, 2018, were cancelled due
    to a tornado warning in the area and a continuance request, respectively.
    18
    In addition to testimonial evidence presented at the public hearing, the
    commission received a written ‘‘side-by-side comparison’’ of the applicant’s
    proposal and the Mayflower Inn, which states in relevant part: ‘‘Mayflower
    has thirty units while [the applicant’s proposal] plans to have thirty-seven
    units. Fifty-four units were approved by the settlement agreement . . . yet
    only thirty-seven are planned—seven more than the Mayflower. Mayflower
    has nine buildings while [the applicant’s proposal] will have six. Both [the
    applicant’s proposal] and Mayflower have a restaurant with an accompa-
    nying bar—Mayflower has eighty-five dining seats while [the applicant’s
    proposal] has sixty-eight. Mayflower is able to have outdoor dining as well
    on its porch which would add seats—but [the applicant’s proposal] is limited
    to sixty-eight seats and only thirty of those can be moved outside. [The
    applicant’s proposal] is limited to twenty-four maximum outdoor events such
    as weddings per year while Mayflower has indicated nearly 100 weddings
    are held every year. Mayflower has two gyms—one in its main building and
    one in its spa. Mayflower offers memberships at both venues. [The appli-
    cant’s proposal] has only one spa. The dedicated spa building at Mayflower
    is 20,000 square feet (this does not include the square footage of gym space
    in the main building) while [the applicant’s proposed] spa and gym will be
    under 11,000 square feet. The Mayflower has tennis courts—[the applicant’s
    proposal] will have none. The Mayflower has two libraries and reading
    rooms—[the applicant] plans to have one. Mayflower has six separate venues
    for ballroom/meeting rooms while [the applicant’s proposal] will have two.
    The total square footage of the various Mayflower meetings spaces is over
    5000 square feet while [the applicant’s proposal] is 3500 [square feet]. May-
    flower also has a dedicated business center; one is not planned at this time
    [in the applicant’s proposal]. Mayflower has two gift shops—[the applicant’s
    proposal] has . . . one. Mayflower has two swimming pools—one indoor
    and one outdoor—[the applicant’s proposal] will have only one. The total
    number of parking spaces is ninety-five at Mayflower and 100 for [the
    applicant’s proposal]. What is clear here is that all of these offerings and
    attributes are typical of what Inns do. As the Chairman [of the commission]
    says—the definition of an ‘inn’ is governed by the one that still exists in
    Washington. [The applicant] is not proposing to do anything that the May-
    flower is not already [doing, and in] every [instance] save room count, [the
    applicant’s] planned activities are [of] a smaller scale than what is currently
    offered—and what has been offered at Mayflower for decades.’’
    19
    Of the eight members on the commission, only three—Nicholas N. Sol-
    ley, David Werkhoven, and Raymond W. Reich—had served on the commis-
    sion when the settlement agreement was approved in 2013. Those three
    members all voted to approve the 2018 modification request.
    20
    The conditions attached to the commission’s approval state:
    ‘‘1. This approval remains subject to all of the conditions and limitations set
    forth in the settlement agreement approved by the commission on January
    7, 2013, together with the conditions of approval that were incorporated
    into the commission’s motion for approval of the settlement agreement.
    ‘‘2. The commission finds that the separate ownership of guest room
    units is inconsistent with its interpretation of the word ‘inn’ as used in the
    [regulations]. An ‘inn’ is a lodging facility owned and managed by a single
    ownership entity, with rooms available for transient occupancy by lessees.
    Therefore, a condition of approval is that the ‘inn’ must be owned as an
    undivided property. Guest room units, however they may be designated,
    may not be separately owned.
    ‘‘3. No guest room units shall have a kitchen.
    ‘‘4. No guest room unit shall contain a refrigerator having a capacity larger
    than 4.0 cubic feet.
    ‘‘5. No guest room unit shall have a stove, stove top, oven or convec-
    tion oven.
    ‘‘6. No guest room unit shall have any cooking facilities, including micro-
    wave ovens.
    ‘‘7. No guest room unit shall have a dishwasher.
    ‘‘8. No guest room unit shall have a washing machine or dryer.
    ‘‘9. The interior floor plans shall be modified to eliminate the ballroom,
    because that use was neither contemplated nor approved in 2013 and, [with-
    out reductions in the uses actually approved in 2013], would expand or
    extend the nonconforming nature of the principal use. In addition, the
    applicant failed to prove that 100 parking spaces allowed under the 2013
    approval would be adequate to accommodate the additional use.
    ‘‘10. The emergency accessway shall be used for emergency purposes
    only and shall not be used to service the pool, poolhouse, or tented vans.
    ‘‘11. As-built drawings shall be submitted to the [commission] upon the
    completion of the foundations and again upon the completion of framing.
    The as-built drawings must be approved by the commission or its authorized
    agent(s) before commencement of further construction. The commission
    shall, at the expense of the applicant, refer such drawings to a professional
    engineer and/or a surveyor for review.
    ‘‘12. Outside construction may take place only between 7:00 a.m. and 5:00
    p.m. Monday through Friday and between 8:00 a.m. and 4:00 p.m. Saturday
    and Sunday. No blasting, no operation of heavy equipment, and no site work
    are permitted on Saturday or Sunday, before 8:00 a.m. Monday through
    Friday, and on Memorial Day, Fourth of July, and Labor Day.
    ‘‘13. In accordance with Section 13.4 of the [regulations], a performance
    bond, in the form of a cash bond or an irrevocable letter of credit from a
    financial institution with offices in Connecticut, in an amount and for items
    to be determined by the commission in consultation with the commission’s
    attorney and/or by an engineer approved by the commission and paid for
    by the applicant, shall be secured before disturbance of the site begins.
    ‘‘14. No day passes or memberships of any kind may be issued for the
    spa, which is to be used by overnight guests only.
    ‘‘15. No day passes or memberships of any kind may be issued for the
    pool, which is to be used by overnight guests only.
    ‘‘16. The finish floor levels for the main inn building shall not exceed
    those shown on Sheet SD.1, revised to 12/17/12 as was approved in the
    [settlement agreement].
    ‘‘17. The main inn building is limited to five levels: two underground and
    three above ground.
    ‘‘18. Outdoor lighting must comply with the requirements of Section 12.15
    of the [regulations]. A plan for all such lighting must be submitted to and
    approved by the [commission] prior to the commencement of any construc-
    tion.
    ‘‘19. All cottages shall be limited to two floors only per Sheet SD.1, revised
    to 12/17/12.
    ‘‘20. There shall be no kitchen in the pool house.
    ‘‘21. Written approval by the fire marshal shall be submitted to the commis-
    sion prior to the issuance of the special permit.
    ‘‘22. Written approval by the [Department of Energy and Environmental
    Protection] of the final septic plans shall be submitted to the commission
    prior to the issuance of the special permit.
    ‘‘23. Written approval by Aquarion Water Company of the final plans for
    the water supply shall be submitted to the commission prior to the issuance
    of the special permit and shall include (a) determination that the water
    supply is adequate to service the ‘inn’ and sprinkler systems, and (b) a
    statement of how many additional wells will be needed and where they will
    be located. The applicant must also provide the commission with a signed
    statement that it agrees to pay for all required system improvements. . . .
    ‘‘24. Any further modifications to any of the approved plans . . . must
    be submitted to and approved by the [commission] prior to implementation.
    ‘‘25. No passenger drop offs by buses carrying fifteen passengers or more.’’
    (Citation omitted.)
    21
    While the record indicates that commission members engaged in exten-
    sive deliberations over several nights during which they expressed their
    individual views on a variety of issues, the commission nonetheless did not
    furnish ‘‘a formal, official, collective statement of reasons for its action.’’
    Protect Hamden/North Haven from Excessive Traffic & Pollution, Inc. v.
    Planning & Zoning Commission, 
    220 Conn. 527
    , 544, 
    600 A.2d 757
     (1991);
    see also Verrillo v. Zoning Board of Appeals, 
    155 Conn. App. 657
    , 673–76,
    
    111 A.3d 473
     (2015) (neither individual reasons stated by land use agency
    members during deliberations nor remarks of member in making motion to
    grant application constitute collective statement). As a result, this court is
    obligated, pursuant to well established precedent, to search the entire record
    to ascertain whether the evidence reveals any proper basis for the commis-
    sion’s decision to approve the modification application. See Harris v. Zoning
    Commission, 
    259 Conn. 402
    , 423, 
    788 A.2d 1239
     (2002).
    22
    ‘‘[P]ursuant to . . . § 8-8 (a), a person may derive standing to appeal
    based solely upon his status as an abutting landowner or as a landowner
    within 100 feet of the subject property.’’ Pierce v. Zoning Board of Appeals,
    
    7 Conn. App. 632
    , 635–36, 
    509 A.2d 1085
     (1986).
    23
    Although § 8-8 (o) has been amended since the events at issue, that
    amendment is not relevant to this appeal. We therefore refer to the current
    revision of § 8-8 (o).
    24
    In its appellate brief, the commission maintains that, given the particular
    facts and circumstances now before us, the principles governing noncon-
    forming uses do not apply to this appeal.
    25
    See, e.g., McMahon v. Board of Zoning Appeals, 
    140 Conn. 433
    , 
    101 A.2d 284
     (1953); cf. MacKenzie v. Planning & Zoning Commission, 
    146 Conn. App. 406
    , 427–30, 
    77 A.3d 904
     (2013) (variance power rests exclusively
    with zoning board of appeals).
    26
    See also Washington Zoning Regs., § 17.3.A (‘‘no such nonconforming
    use shall be enlarged or increased, nor extended to occupy a greater area
    of the lot than was occupied at the time such use became nonconforming
    under these [r]egulations’’); Washington Zoning Regs., § 17.4.A (‘‘[N]o such
    nonconforming structure may be enlarged, extended, or otherwise altered
    in such a way as to increase the area, volume, or percentage of the structure
    that is nonconforming or to create, increase, enlarge, or extend any other
    nonconformity as to the structure or the lot. This prohibition includes, but
    is not limited to, any horizontal or vertical extension or expansion of a
    structure within a required setback area.’’). The regulations similarly provide
    that, ‘‘[o]n any nonconforming structure or portion of a structure containing
    a nonconforming use, repairs and maintenance may be done provided that
    the nonconforming aspects of the structure (e.g., setbacks from lot lines,
    height), as well as the cubic content of the nonconforming portions of the
    structure shall not be increased. . . . Any nonconforming structure that
    has been damaged by fire, explosion, or act of nature may be repaired,
    rebuilt, or replaced within two years of such damage, provided that such
    repairs, rebuilding, or replacement does not extend nor expand any noncon-
    forming aspect of the affected building.’’ (Emphasis added.) Washington
    Zoning Regs., § 17.8.
    27
    A setback is ‘‘a zoning limitation that prohibits construction’’ within a
    specified distance from a property line. Bloom v. Zoning Board of Appeals,
    
    233 Conn. 198
    , 200 n.2, 
    658 A.2d 559
     (1995); see also Vivian v. Zoning Board
    of Appeals, 
    77 Conn. App. 340
    , 350, 
    823 A.2d 374
     (2003) (‘‘[t]he setback is
    the distance between the point where a building touches the ground and
    the property line’’); Black’s Law Dictionary (9th Ed. 2009) p. 1496 (defining
    setback as ‘‘[t]he minimum amount of space required between a lot line and
    a building line’’). The regulations here define ‘‘setback’’ in relevant part as
    ‘‘the shortest distance from a structure to a lot line, public right of way, or
    wetland or watercourse. . . .’’ Washington Zoning Regs., § 21.1.60.
    28
    See Simko v. Ervin, 
    234 Conn. 498
    , 509, 
    661 A.2d 1018
     (1995) (Berdon,
    J., dissenting) (‘‘the term ‘footprint’ . . . is commonly used, and universally
    understood, to refer to the boundaries of a building’’); Campbell v. Tiverton
    Zoning Board, 
    15 A.3d 1015
    , 1020 (R.I. 2011) (defining footprint as ‘‘the
    exterior perimeter of the foundation’’ of structure); Black’s Law Dictionary
    (9th Ed. 2009) p. 717 (defining footprint in land use context as ‘‘[t]he shape
    of a building’s base’’).
    29
    The plaintiffs concede that the main building depicted in the 2012 plan
    is a lawful use. In their principal appellate brief, they state in relevant
    part: ‘‘The main building . . . stands approved in 2013, and is therefore
    ‘lawful’ . . . .’’
    30
    Our review of the record indicates that all parties that participated in
    the commission’s review of Wykeham’s 2008 special permit application, as
    well as all parties to the 2013 settlement agreement and the hearing before
    the Superior Court, overlooked this specific setback requirement. The regula-
    tions in this regard may have contributed to the confusion, as they contain
    multiple setback requirements that ostensibly could apply to the property.
    Section 11 of the regulations is titled ‘‘Density, Lot Size, and Other Dimen-
    sional Requirements.’’ Section 11.6.1.A then specifies a thirty foot ‘‘[r]ear’’
    and a fifteen foot ‘‘[s]ide’’ setback requirement ‘‘[f]or buildings and structures
    used in part or wholly for [b]usiness.’’ The site plans submitted as part of
    Wykeham’s proposal, and the 2012 plan in particular, contain a yellow
    boundary that is labeled ‘‘30 [Foot] Side Yard.’’
    Section 11.6.1 nonetheless includes a crucial condition to those setback
    requirements, stating that they apply ‘‘[u]nless otherwise specified in the
    particular zone for a commercial lot . . . .’’ Section 13.9.B, in turn, specifies
    the minimum setback requirements for ‘‘any structure’’ constructed as part
    of a ‘‘Tourist Home or Inn.’’ Because the proposed use of the property
    indisputably is as an inn, the fifty foot lot line setback of § 13.9.C applies
    to the main building, which lies thirty-one feet from the side lot line on the
    2012 plan.
    In Torrington v. Zoning Commission, 
    261 Conn. 759
    , 770, 
    806 A.2d 1020
    (2002), a municipal zoning commission entered into a settlement agreement
    that ‘‘varied to some extent the zoning regulations applicable to the property
    in question’’ despite the fact that the variance power is statutorily allocated
    to the zoning board of appeals. In rejecting a challenge to the propriety of
    that settlement agreement, our Supreme Court explained that ‘‘[i]t is not
    enough that the conduct in question was in violation of the applicable zoning
    statutes or regulations. It must be shown that the conduct was so far outside
    what could have been regarded as a valid exercise of zoning power that
    there could not have been any justified reliance on it.’’ 
    Id., 768
    . The court
    emphasized that the zoning commission’s decision to enter into the settle-
    ment agreement ‘‘served to settle a vigorously contested appeal’’; 
    id., 770
    ;
    and that the plaintiff challenging the propriety of that agreement ‘‘does
    not contend that the [settlement agreement] was the product of bad faith,
    collusion, or other improper conduct.’’ 
    Id., 771
    . Perhaps most importantly,
    the court noted that ‘‘it was not entirely obvious that the [zoning] commis-
    sion’s conduct in entering into the [settlement agreement] was outside its
    purview.’’ 
    Id., 770
    . For those reasons, the court concluded that the parties
    reasonably could rely on that settlement agreement. See 
    id., 776
    . That logic
    applies equally to the present case.
    31
    See Washington Zoning Regs., § 17.1 (‘‘It is . . . the intent of these
    Regulations that the nonconforming aspects of [any nonconforming] lots
    and structures shall not be enlarged, expanded, or extended . . . . A non-
    conforming use of a structure . . . shall not be extended, expanded, or
    enlarged . . . .’’); Washington Zoning Regs., § 17.4.A (‘‘[N]o such noncon-
    forming structure may be enlarged, extended, or otherwise altered in such
    a way as to increase the area, volume, or percentage of the structure that
    is nonconforming or to create, increase, enlarge, or extend any other noncon-
    formity as to the structure or the lot. This prohibition includes, but is not
    limited to, any horizontal or vertical extension or expansion of a structure
    within a required setback area.’’).
    32
    The January 7, 2013 motion to approve the settlement agreement states
    in relevant part: ‘‘The [commission] hereby approves the [s]ettlement [a]gree-
    ment . . . per the [2012 plan], the architectural renderings, A and B . . .
    and the [six] proposed conditions of approval . . . .’’
    33
    The 2018 plan contained two minor alterations that are not in dispute.
    Three emergency egress landings and a five by twenty foot pull-off area
    were added to comply with building code requirements and the Americans
    with Disabilities Act of 1990, 42 U.S.C. § 12131 et seq. On appeal, the plaintiffs
    do not claim that those additions constituted an impermissible expansion
    of a nonconforming structure. Indeed, such modifications of nonconforming
    structures are permitted under the regulations. See Washington Zoning Regs.,
    § 17.8 (‘‘[n]othing in these Regulations shall be deemed to prohibit any
    modifications that are determined . . . to be necessary to strengthen or
    restore to a safe condition any structure or part thereof’’).
    34
    See Washington Zoning Regs., § 17.4.A (‘‘[N]o such nonconforming struc-
    ture may be enlarged, extended, or otherwise altered in such a way as to
    increase the area, volume, or percentage of the structure that is nonconform-
    ing . . . . This prohibition includes . . . vertical extension or expansion
    of a structure within a required setback area.’’).
    35
    The one condition tangentially related to the issue of height pertained
    to its method of calculation. When the commission approved the settlement
    agreement on January 7, 2013, the sixth condition imposed by the commis-
    sion stated: ‘‘Benchmark elevations for the building height shall be estab-
    lished for each building per Section 11.7.2.3 of the [regulations].’’ Section
    11.7.2.3 of the regulations provides: ‘‘For purposes of determining the total
    vertical height and mean height of a structure, please refer to the definitions
    in Section 21 of ‘Average Finished Grade’ and ‘Average Pre Existing Grade.’
    This average must be determined in the field prior to any site disturbance.
    A benchmark elevation distinguished and defined from the pre existing
    average grade must be marked on site and mapped prior to any land distur-
    bance. This benchmark shall be maintained throughout the duration of
    construction and used to confirm the total vertical height and mean height
    of the structure after construction.’’
    36
    Neither the school plans nor the discharge permit plans were submitted
    to the commission in connection with the January 7, 2013 special meeting.
    37
    In a letter to the commission that was submitted as part of the 2018
    public hearing on the modification application, Owens stated in relevant
    part that the architectural renderings ‘‘are computer generated, [three]-
    dimensional depictions of a specific building design . . . . They convey
    quantifiable height, shape, volume and number of stories. The renderings
    correlate directly to [the discharge permit plans]. There is NO INTENT to
    suggest that the [discharge permit plans] are relevant to any issue other
    than establishing architectural characteristics of [the architectural render-
    ings]. [The discharge permit] plans were not part of the settlement agree-
    ment.’’ (Emphasis in original.) In comparing his analysis of the dimensions
    of the architectural renderings, Owens opined that the main building
    depicted on the 2018 plan was approximately six feet and seven inches
    taller than the architectural renderings.
    38
    Our decisional law commonly refers to the ‘‘testimony’’ offered at the
    public hearings of municipal land use agencies in this state without regard
    to whether it was offered under oath. See, e.g., Anatra v. Zoning Board of
    Appeals, 
    307 Conn. 728
    , 745, 
    59 A.3d 772
     (2013) (explaining that ‘‘the testi-
    mony at the hearing’’ is relevant to proper construction of variance granted
    by board); Alvord Investment, LLC v. Zoning Board of Appeals, 
    282 Conn. 393
    , 415, 
    920 A.2d 1000
     (2007) (‘‘the issue was raised in the testimony
    before the board at the public hearing’’ (emphasis omitted)); Jalowiec Realty
    Associates, L.P. v. Planning & Zoning Commission, 
    278 Conn. 408
    , 411,
    
    898 A.2d 157
     (2006) (zoning commission continued public hearing ‘‘[a]fter
    hearing testimony from the plaintiff’s experts and from members of the
    public’’); Cameo Park Homes, Inc. v. Planning & Zoning Commission, 
    150 Conn. 672
    , 678, 
    192 A.2d 886
     (1963) (‘‘[n]o testimony was offered at the
    hearing before the commission’’); Cornacchia v. Environmental Protection
    Commission, 
    109 Conn. App. 346
    , 353, 
    951 A.2d 704
     (2008) (noting that
    ‘‘the court relied on testimony from the public hearing’’ in concluding that
    substantial evidence existed to support commission’s denial of permit);
    Urbanowicz v. Planning & Zoning Commission, 
    87 Conn. App. 277
    , 297,
    
    865 A.2d 474
     (2005) (‘‘the commission heard testimony on the [special permit]
    application’’); Children’s School, Inc. v. Zoning Board of Appeals, 
    66 Conn. App. 615
    , 630, 
    785 A.2d 607
     (noting that zoning board ‘‘was entitled to credit
    the testimony . . . adduced during the four days of public hearings’’), cert.
    denied, 
    259 Conn. 903
    , 
    789 A.2d 990
     (2001).
    In Parsons v. Board of Zoning Appeals, 
    140 Conn. 290
    , 292–93, 
    99 A.2d 149
     (1953), our Supreme Court explained that ‘‘[p]roceedings before an
    administrative board are informal. . . . Such a board is not bound by the
    strict rules of evidence. . . . The only requirement is that the conduct of
    the hearing shall not violate the fundamentals of natural justice. That is,
    there must be due notice of the hearing, and at the hearing no one may be
    deprived of the right to produce relevant evidence or to cross-examine
    witnesses produced by his adversary . . . .’’ (Citations omitted.) For that
    reason, ‘‘[t]here is no legal requirement that witnesses before a municipal
    land use agency must take an oath before testifying.’’ 9 R. Fuller, Connecticut
    Practice Series: Land Use Law and Practice (4th Ed. 2015) § 20:11, p. 611;
    see also Loring v. Planning & Zoning Commission, 
    287 Conn. 746
    , 758, 
    950 A.2d 494
     (2008) (‘‘[a]n unsworn statement of a party’s counsel is competent
    evidence before a zoning body’’); Parsons v. Board of Zoning Appeals, supra,
    293 (board entitled to accept unsworn statements); Wheeler v. Cosgrove,
    Superior Court, judicial district of New Haven, Docket No. CV-XX-XXXXXXX-
    S (December 12, 2019) (zoning hearings ‘‘do not require the swearing in of
    witnesses so long as an opportunity to refute their testimony is provided’’);
    1 P. Salkin, American Law of Zoning (5th Ed. 2021) § 8:16 (‘‘[u]nsworn
    testimony may be received’’ at zoning hearing). Because the record reflects
    that the parties were afforded the opportunity to refute the unsworn testi-
    mony offered by Szymanski and others at the public hearing, the commission
    was entitled to consider that testimony.
    39
    The minutes of the commission’s August 7, 2018 deliberations likewise
    indicate that Solley ‘‘stated that [in 2013, the commission] did not deliberate
    over elevations or [floor plans] because there were none submitted with
    the site plan.’’
    40
    With respect to the proposed restaurant, the settlement agreement states
    in relevant part: ‘‘The Inn’s restaurant shall be open to the public but shall
    have a total maximum seating capacity of sixty-eight (68) seats during normal
    operations, excluding weddings, or ‘paid for events.’ Of the maximum seating
    capacity, no more than thirty (30) seats shall be outdoor seating.’’
    41
    With respect to the proposed spa and fitness center, the settlement
    agreement states in relevant part: ‘‘The Inn’s spa and fitness center will be
    limited to the area within the building that is labeled ‘Fitness Building’ on
    the Site Plan and cannot exceed floor area totaling more than 11,400 square
    feet SAVE THAT a single exercise room no larger than 3,800 square feet
    and containing only exercise equipment may be located within the ‘Main
    Building,’ labeled as such as depicted on the Site Plan. If the single exercise
    room is located in the Main Building, the size of the Fitness Building would
    then be reduced by the same amount so that the combined floor area devoted
    to spa and fitness facilities in the Fitness Building and Main Building cannot
    exceed 11,400 square feet in total. There shall be no treatment rooms in
    the Main Building under any circumstances and treatment rooms in the
    Fitness Building may not be used for overnight stays. Wykeham will not issue
    ‘day passes’ for the spa and fitness center or for any such exercise room.’’
    42
    With respect to tented events, the settlement agreement states in rele-
    vant part: ‘‘There shall be no more than twenty-four (24) tented events
    between and only during the period from May 1 through October 31 of each
    calendar year and no more than one (1) tented event may be held per day.
    Tented events may be held in two general locations, the first being north
    of the Main Building (as those specific locations are depicted on the Site
    Plan) and the second being south of the Main Building (the specific south
    side locations are as depicted on the Site Plan.) Of the twenty-four (24)
    tented events, up to but no more than twelve (12) tented events may occur
    on the south side of the Main Building during any one calendar year. The
    balance of the twenty-four (24) total number of tented events that may be
    held in a calendar year, less the actual number of tented events not to
    exceed twelve (12) that occur on the south side in any calendar year, shall
    be allowed on the north side. No buildings, tents or other structures shall
    be constructed, placed or erected above, or on the ground in the Restricted
    Area as depicted on the Site Plan. No permanent or temporary parking is
    permitted in the Restricted Area. No food or beverages, including but not
    limited to, alcoholic beverages, shall be prepared or served in the
    Restricted Area.’’
    43
    Detailed floor plans are not required for the issuance of a special permit
    under the regulations. See Washington Zoning Regs., §§ 13.4 and 14.3.
    44
    The proposed bar, ‘‘prefunction’’ meeting area, and meeting room/library
    all are located in the main building.
    45
    The modification application approved by the commission here con-
    tained a bar, one ‘‘meeting room/library,’’ and one ‘‘prefunction’’ meeting
    area.
    46
    For example, the commission required the applicant to eliminate the
    proposed ballroom from the 2018 plan, prohibited the issuance of day passes
    for the spa and pool areas, and prohibited ‘‘passenger drop offs by buses
    carrying [fifteen] passengers or more.’’ The commission required the main
    building to be ‘‘limited to five levels’’ and further specified that its ‘‘finished
    floor levels . . . shall not exceed those shown on Sheet SD.1 . . . .’’ The
    commission also prohibited individual ownership of guest room units and
    mandated that guest room units shall not have (1) ‘‘a kitchen’’; (2) ‘‘any
    cooking facilities,’’ including ‘‘a stove, stove top, oven or convection oven’’;
    (3) ‘‘a dishwasher’’; (4) ‘‘a washing machine or dryer’’; or (5) a ‘‘refrigerator
    having a capacity larger than 4.0 cubic feet.’’ See footnote 20 of this opinion.
    47
    Subparagraph 1 of § 13.1.C.1 provides in relevant part: ‘‘That the pro-
    posed use and any building or other structure in connection therewith are
    consistent with the objectives of the Plan of Conservation and Development
    . . . and the intent and requirements of the Zoning Regulations as such
    documents may be amended.’’ Washington Zoning Regs., § 13.1.C.1.
    Subparagraph 2 of § 13.1.C.2 provides: ‘‘That the location, type, character,
    size, scale, proportion, appearance, and intensity of the proposed use and
    any building or other structure in connection therewith shall be in harmony
    with and conform to the appropriate and orderly development of the Town
    and the neighborhood and will not hinder or discourage the appropriate
    development and use of adjacent property or substantially or permanently
    impair the value thereof.’’ Washington Zoning Regs., § 13.1.C.2.
    48
    See, e.g., Rapoport v. Zoning Board of Appeals, 
    301 Conn. 22
    , 34, 
    19 A.3d 622
     (2011); Harris v. Zoning Commission, 
    259 Conn. 402
    , 420–21, 
    788 A.2d 1239
     (2002); Paige v. Town Plan & Zoning Commission, 
    235 Conn. 448
    , 464, 
    668 A.2d 340
     (1995); Protect Hamden/North Haven from Excessive
    Traffic & Pollution, Inc. v. Planning & Zoning Commission, supra, 
    220 Conn. 544
    –45; Ward v. Zoning Board of Appeals, 
    153 Conn. 141
    , 144, 
    215 A.2d 104
     (1965); Turek v. Zoning Board of Appeals, 
    196 Conn. App. 122
    ,
    136–37, 
    229 A.3d 737
    , cert. denied, 
    335 Conn. 915
    , 
    229 A.3d 729
     (2020);
    Verrillo v. Zoning Board of Appeals, supra, 
    155 Conn. App. 672
    –76; Malone
    v. Zoning Board of Appeals, 
    134 Conn. App. 716
    , 724, 
    39 A.3d 1233
     (2012);
    200 Associates, LLC v. Planning & Zoning Commission, 
    83 Conn. App. 167
    , 177–78, 
    851 A.2d 1175
    , cert. denied, 
    271 Conn. 906
    , 
    859 A.2d 567
     (2004).
    As one commentator has observed, ‘‘Connecticut’s various land regulation
    statutes all provide . . . that commissions ‘shall’ state the reasons for their
    decisions on the record. However, Connecticut courts have consistently
    refused to void decisions made without a statement of reasons, even though
    all these statutes use ‘shall’ rather than ‘may.’ ’’ (Footnote omitted.) T. Ton-
    dro, Connecticut Land Use Regulation (2d Ed. 1992) pp. 473–74; cf. Gagnon
    v. Inland Wetlands & Watercourses Commission, 
    213 Conn. 604
    , 611, 
    569 A.2d 1094
     (1990) (public policy reasons make it ‘‘practical and fair’’ for
    reviewing court to search record of ‘‘a local land use body . . . composed
    of laymen whose procedural expertise may not always comply with the
    multitudinous statutory mandates under which they operate’’).
    49
    During the public hearing, the commission heard expert testimony from
    Szymanski that the 100 parking spaces reflected on the 2018 plan would be
    adequate to accommodate the proposed use of the property. That testimony
    was acknowledged during the commission’s deliberations.