Sharon K. Nelson G. Jean Connelly John P. Rusinack and Beverly A. Rusinack, Husband and Wife and Lois Johnson v. City of Hampton, Iowa , 802 N.W.2d 224 ( 2011 )


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  •               IN THE SUPREME COURT OF IOWA
    No. 08–0563
    Filed August 26, 2011
    SHARON K. NELSON; G. JEAN CONNELLY; JOHN P. RUSINACK and
    BEVERLY A. RUSINACK, Husband and Wife; and LOIS JOHNSON,
    Appellants,
    vs.
    CITY OF HAMPTON, IOWA,
    Appellee.
    Appeal from the Iowa District Court for Franklin County, Bryan H.
    McKinley, Judge.
    Landowners appeal from district court decision denying their
    challenge to special assessments against their property for public
    improvements made by a city to a residential subdivision. AFFIRMED.
    Raymond P. Drew, Hampton, for appellants.
    James R. Wainwright of Ahlers & Cooney, P.C., Des Moines, for
    appellee.
    2
    CADY, Chief Justice.
    In this appeal, we must primarily decide whether a city council’s
    decision to make public improvements within a subdivision renders the
    city unable to assess the costs of the improvements to landowners when
    a city ordinance provides for the improvements to be made by the
    subdivider.1       The district court determined the city failed to enforce a
    subdivision ordinance requiring the subdivider to pay for street
    improvements, but concluded the plaintiffs failed to state a claim upon
    which relief could be granted because a city cannot be sued for its failure
    to enforce ordinances. The district court further found the assessments
    were not excessive. On our review of the issues presented on appeal, we
    affirm the decision of the district court.
    I. Background Facts and Proceedings.
    Nearly twenty years ago, Arthur Raisch and landowners in the
    northwest edge of the City of Hampton, Iowa, began to develop plans for
    a high-end residential housing project.                  The basic plan eventually
    developed into three separate subdivisions, each connected by streets
    dedicated within each subdivision. These streets were accessed from the
    northern end of Third Street Northwest.                      Although this litigation
    primarily centers on the third subdivision, the other two phases are
    relevant to understanding the legal issues presented in this case.2
    The first subdivision was located directly north of Third Street
    Northwest. It is known as Oak Hill First Addition. The preliminary plat
    1Although  the terms “subdivider” and “developer” are often used synonymously,
    in this case, the words refer to distinct roles. The term “subdivider” is defined in the
    Hampton ordinance as “any person, firm, corporation, or legal entity undertaking the
    subdivision or resubdivision of a tract or parcel of land.” Hampton, Iowa, Code
    § 170.04(18) (2002). The term “developer” is defined as “the owner of land proposed to
    be subdivided or the owner’s agent.” Id. § 170.04(8).
    2A   map of the plat at issue in this case appears at the end of this opinion.
    3
    provided for the dedication of a street and cul-de-sac identified as Oak
    Court, which extended north off Third Street Northwest.       Twelve lots
    abutted the cul-de-sac and street. The plat also called for the dedication
    of an east/west street called Oak Hill Drive that would intersect Oak
    Court.   Oak Hill Drive would run east from Oak Court approximately
    300′ into a cul-de-sac to provide access to the second subdivision
    immediately east of Oak Hill First Addition.     This subdivision would
    consist of six lots and would be known as the Gallogly Subdivision.
    The plans also called for Oak Hill Drive to run west of Oak Court to
    a cul-de-sac and would provide access to the third subdivision.       This
    subdivision would be known as Oak Hill Second Addition. Ultimately,
    this third housing development would be separated from the Oak Hill
    First Addition by approximately 300′ of land owned by Raisch and other
    persons. Raisch, the primary developer, had preliminarily platted this
    area to be part of this subdivision, but eventually decided to limit the
    Oak Hill Second Addition to the west half of the land.        Raisch had
    acquired ownership of the land over which Oak Hill Drive would extend
    from Oak Hill First Addition to Oak Hill Second Addition. Oak Hill Drive
    would then extend approximately 400′ within the subdivision containing
    ten abutting lots.
    The Oak Hill First Addition was developed first, followed by the
    Gallogly Subdivision.   Final plats were filed for both subdivisions, and
    the streets and municipal service lines were installed during the same
    time that the lots were sold and homes were built on the lots. The plans
    to develop Oak Hill Second Addition did not proceed forward, and the
    land to the west of Oak Hill First Addition remained largely undeveloped.
    The first three lots on the west side of Oak Court in the Oak Hill
    First Addition, beginning at the southern portion of the point where
    4
    Northwest Third Street enters the subdivision, are identified as “lots one,
    two, and twelve.”    A sixty-six-foot strip of land between lots two and
    twelve was dedicated as the beginning of the street that would extend
    westerly from Oak Court into Oak Hill Second Addition to complete Oak
    Hill Drive.    Plaintiffs John P. Rusinack and Beverly A. Rusinack
    purchased lot one in 1992. A house was erected on the lot at the time.
    Plaintiff Lois Johnson purchased lot twelve in 1993 with her late
    husband.      The Johnsons built a home on the lot.      Plaintiff G. Jean
    Connelly purchased lot two in 1998, together with her husband, who is
    now deceased.      A house was erected on the lot at the time of the
    purchase. The land dedicated as the street between the Johnson and
    Connelly lots consisted of dirt and gravel.
    The Rusinacks also purchased a tract of land immediately to the
    west of lot one. A portion of the northern boundary of the tract fronts
    the planned future development of Oak Hill Drive running into the Oak
    Hill Second Addition.    The Johnsons also purchased a tract of land
    immediately to the west of lot twelve. The southern border of the tract
    fronts the planned development of Oak Hill Drive.
    Plaintiff Sharon Nelson owns approximately three acres of land to
    the west of the second Rusinack lot. The land is rectangular in shape.
    The border to the north is 100′ and runs along the planned future
    development of Oak Hill Drive.     The lot extends 650′ to the south.    A
    house is located on the southern end of the lot, which fronts another
    street south of the development that runs east and west. Nelson and her
    husband had lived on the acreage for some time and used the northern
    border of their land as pasture for horses for many years.
    The land between Oak Hill First Addition and Oak Hill Second
    Addition had been preliminarily platted by Raisch for development.
    5
    However, Raisch decided he did not want to include the land in the
    development of Oak Hill Second Addition. In April 2000, Raisch entered
    into a written development agreement with the City of Hampton in
    conjunction with his decision to proceed with the development of Oak
    Hill Second Addition. Under the agreement, Raisch agreed to employ an
    engineer to survey the property and proceed with the residential housing
    development. In return, the city agreed to make certain improvements to
    the property. In particular, Raisch agreed to dedicate the land to extend
    Oak Hill Drive 300′ from the west edge of Oak Hill First Addition to the
    Oak Hill Second Addition, and the city agreed to install the water main
    within the three-hundred-foot section.       Raisch, however, agreed to
    compensate the city for the construction cost. Raisch agreed to engineer
    and install the sewer and water mains within Oak Hill Second Addition
    and connect them to the water and sewer mains extended by the city to
    the subdivision. The city agreed to furnish the pipes and materials to
    Raisch for the installation of the sewer and water mains within the
    subdivision.   Additionally, Raisch agreed to install the storm sewers
    along the entire street extending west from the Oak Hill First Addition.
    He also agreed to be responsible for grading the entire street. Finally, the
    city agreed to surface the entire street and assess the cost to the
    adjoining property owners.    This agreement was approved by the city
    council.
    In 2001, Raisch hired a civil engineering firm to survey and
    subdivide the land as well as prepare the preliminary and final plats for
    the Oak Hill Second Addition. The engineering company understood the
    subdivision would be separated from Oak Hill First Addition by 300′, and
    that Oak Hill Drive would be extended from Oak Hill First Addition
    across the undeveloped land into the new subdivision.
    6
    The plans and plats for Oak Hill Second Addition were completed
    in 2002, and the project began in 2003 with the installation of sewer and
    water mains along Oak Hill Drive running west to the cul-de-sac. The
    street was also graded, leaving a dirt surface from Oak Hill First
    Addition. The city chose not to pave the street and not to install curbs,
    gutters, and the remaining storm sewer until the lots began to sell and
    homes were built.
    The final plat of Oak Hill Second Addition was approved by the city
    council and recorded in June 2004.       This plat consisted of nine lots
    abutting the street and cul-de-sac designated as Oak Hill Drive.        The
    street then extended east from the lots to the land dedicated as the street
    between lot two and lot twelve of Oak Hill First Addition.
    By 2005, over half the lots in the subdivision had sold, and the
    owners were experiencing some problems with the dirt surface street, as
    well as experiencing problems with surface drainage. The city decided to
    proceed with plans to surface the street. Raisch had passed away by this
    time, and the subdivision project had slowed.          The city, however,
    continued to move ahead with the project. It hired the same engineering
    company that had surveyed the land and prepared the plat for Raisch to
    prepare the preliminary and final assessments for the street resurfacing
    project.
    In November 2006, the city council adopted a resolution of
    necessity for the Oak Hill Drive improvements. The street improvements
    essentially consisted of the installation of 325′ of storm sewer and 905′ of
    six-inch concrete paving with integral curb and gutter.      The surfacing
    would begin at Oak Court in the Oak Hill First Addition and run west
    into the cul-de-sac in the Oak Hill Second Addition.
    7
    The costs of the project in 2006 were estimated to be $183,100.
    An assessment plat and schedule were prepared. The city intended to
    assess 89.6% of the costs of the project to the owners of the lots and
    tracts abutting the improved street, pursuant to the special benefits
    derived from the improvements. The assessments were described in a
    preliminary assessment plat and schedule. A total of eighteen parcels of
    land abutting Oak Hill Drive were subject to the assessment.          The
    property included the nine lots within the Oak Hill Second Addition, the
    two lots within Oak Hill First Addition, and seven tracts of land abutting
    the street between the two subdivisions.     Thus, the property owners
    affected by the assessment included Connelly, Johnson, Nelson, and the
    Rusinacks.   The two lots owned by Johnson on the north side of the
    street were included in the assessment. The lot owned by Connelly on
    the south side of the street was also included in the assessment. The
    back lot owned by the Rusinacks on the south side of the street was
    included in the assessment, and the lot owned by Nelson was included in
    the assessed area because the north boundary of the lot abutted the
    street.
    The assessment schedule was prepared by the same engineering
    company that had originally surveyed the land and prepared the
    preliminary and final plats for the Oak Hill Second Addition.         The
    company essentially assigned a portion of the construction costs to the
    owners of the property abutting the proposed street according to the
    number of feet of property fronting the street. Under this method, the
    engineer proposed the following assessments:
    Nelson            $9417.55
    Rusinacks         $5481.16
    Connelly          $6030.18
    Johnson           $7663.96
    8
    In December 2006, Nelson, Connelly, Johnson, and the Rusinacks
    filed a petition with the district court to contest the assessments. The
    petition claimed the assessments were void because they were contrary
    to a city ordinance that required the subdivider to “make and install” the
    grading and improvement of streets within the final plat of a subdivision
    by “surfac[ing] or caus[ing] to be surfaced the roadways” in a manner
    prescribed by regulations. Hampton, Iowa, Code § 170.09(18)(A) (2002).
    In the alternative, the petition claimed the assessments of the properties
    exceeded the statutory limitations for assessments, and no special
    benefit was derived from the proposed improvement of the street.
    The street construction project and assessments went forward, as
    did the lawsuit brought by the property owners on the east end of the
    street project. Additionally, the city hired a second engineering firm to
    review the final assessment schedule.      The engineer recalculated the
    assessments of the street construction costs under a formula known as
    the “Flint Formula.”     Generally, this formula distributes the costs
    according to the special benefit conferred on the property as result of the
    paved street, based not only on the frontage foot of the property but also
    the depth of the property within the assessment district.      The special
    benefits are considered in the formula by assigning a point value to each
    benefit.   Based on the Flint Formula, the engineer determined the
    following assessments:
    Nelson             $8210.80
    Rusinacks          $8199.54
    Connelly           $9698.36
    Johnson Tract      $6717.41
    Johnson Lot        $9894.41
    The city council considered the assessments reached by both
    engineers in making its final determination.        It directed the final
    9
    assessments to be corrected by decreasing the amounts of the
    assessments against the lots owned by Connelly and Johnson by fifty
    percent because they were corner lots that had existing access through
    Oak Court and Northwest Third Street.       The city council adopted the
    Flint Formula calculations for the tract of land owned by the Johnsons
    and the tract of land owned by Nelson. It increased the assessment to
    the tract owned by the Rusinacks in an amount between the final
    assessment and the Flint Formula assessment.
    The street improvements were completed by the city during 2007,
    and a final assessment schedule and levy was adopted by the city council
    in January 2008.
    The final costs of the project were less than the expected costs, and
    the five lots and tracts subject to litigation were collectively assessed
    $30,807.90 of the total assessed costs of $148,439.33. Ultimately, the
    assessments were made as follows:
    Nelson             $8210.80
    Rusinacks          $6083.30
    Connelly           $4849.18
    Johnson Tract      $6717.41
    Johnson Lot        $4947.21
    The case proceeded to trial. The plaintiffs testified they would not
    use the new street and would derive no benefit from its presence.        A
    property appraiser also testified on behalf of the plaintiffs. He did not
    value their property, but indicated that any benefit derived from the
    paved street was offset by the loss of privacy resulting from the street
    and the increased traffic. The city introduced expert testimony showing
    the street increased the value of plaintiffs’ properties.   The testimony
    applied the Flint Formula, as well as other factors.
    10
    Following the trial, the district court rejected the claims by the
    plaintiffs that the city had no authority to assess street construction
    costs to them when a city ordinance made the subdivider responsible for
    the costs. In doing so, the district court also rejected the claim by the
    plaintiffs that the subdivider would have been required to pay for the
    street construction if the ordinance had been enforced and that they
    were entitled to the benefit they would have received if the ordinance had
    been enforced.    It concluded the plaintiffs failed to state a cause of
    action. Finally, the district court found the plaintiffs failed to prove the
    assessment by the city was excessive and that their properties were not
    benefited by the construction of the street.
    The plaintiffs filed an appeal.     They first claim the city had no
    authority to assess the costs of making improvements because the
    ordinance required the subdivider to make the improvements.             They
    assert this claim is properly raised by a petition to test the legality of the
    assessment and assert no assessment would have been necessary if the
    ordinance had been followed.        Alternatively, the plaintiffs argue the
    assessments were excessive.
    The city argues the claim by the plaintiffs based on the city
    ordinance is factually deficient because a portion of the street surfaced
    by the city was outside the subdivision, and the ordinance only makes
    the subdivider responsible to improve streets within the subdivision.
    Thus, the city asserts it was responsible to surface this portion of the
    street, even if the ordinance had been enforced. They also argue the city
    is not required to follow the ordinance, and it may utilize any available
    authority to make public improvements.         Finally, the city argues the
    assessments were not excessive.
    11
    II. Scope of Review.
    Our review of decisions on property assessments is de novo. Gray
    v. City of Indianola, 
    797 N.W.2d 112
    , 117 (Iowa 2011). We give weight to
    the findings by the district court but are not bound by them. Id. On
    appeal, the plaintiffs have the burden to show that the special
    assessments were excessive. Id.
    III. Plaintiffs’ Claim Concerning the Ordinance.
    The plaintiffs argue their claim is authorized under Iowa Code
    section 384.66(1) (2007).      This section permits a person to test the
    “legality of the assessment procedures by a petition in equity filed in
    district court.”    Iowa Code § 384.66(1).   The plaintiffs’ claim, however,
    does not challenge the legality of the procedures to assess property under
    chapter 384.        Instead, the plaintiffs have brought an equity claim
    predicated on the perceived unfairness of allowing the city to assess lot
    owners for improvements it made when a city ordinance directs the
    improvements to be made by a private subdivider. They argue the city
    may not exercise its assessment authority under chapter 384 under such
    circumstances.
    We agree with the city that the plaintiffs have not stated a claim
    under section 384.66(1). The claim by the plaintiffs does not challenge
    the assessment procedures. We also agree that those plaintiffs who own
    property within the Oak Hill First Addition do not fall within the
    parameters of the claim.       The ordinance at issue does not require a
    subdivider to make improvements outside the platted area of the
    subdivision.       Additionally, these plaintiffs make no special claim of
    prejudice to support any other claim other than the city was required to
    enforce the ordinance. Nevertheless, those plaintiffs who own property
    12
    abutting the subdivision plat have stated a claim in equity, and it is this
    claim that we proceed to resolve.
    IV. Impact of City Ordinance on Assessment by the City.
    Municipalities are “creature[s] of the state legislature.” 1 Eugene
    McQuillin, The Law of Municipal Corporations § 3.02, at 234 (3d ed. rev.
    vol. 1999) [hereinafter McQuillin]. In Iowa, cities are given the power of
    self-government or the authority to “exercise any power and perform any
    function it deems appropriate to . . . preserve and improve the peace,
    safety, health, welfare, comfort, and convenience of its residents.” Iowa
    Code § 364.1. One exception to the broad powers conferred to cities is
    the power to tax residents. A city has no power to tax unless specifically
    authorized by the legislature.      Id. § 364.3(4).   The assessment of the
    costs of street improvements is generally considered to be a form of
    taxation.
    Our legislature has specifically authorized cities to assess the costs
    of building or repairing streets and other associated public improvements
    within its borders to property owners based on the benefit derived from
    the improvements. Id. § 384.38; see also Des Moines City Ry. v. City of
    Des Moines, 
    183 Iowa 1261
    , 1273, 
    159 N.W. 450
    , 454–55 (1916).
    Although the legislature has provided cities with a specific procedural
    mechanism for financing public improvements, it expressly recognized
    and reserved cities’ right and power to “establish and enforce ordinances
    regulating the division and use of land.”      Iowa Code § 354.1(3).   As a
    result, we generally employ a “liberal approach to [a city’s] subdivision
    decisions.” Blumenthal Inv. Trusts v. City of W. Des Moines, 
    636 N.W.2d 255
    , 268 (Iowa 2001).
    Iowa’s statutory property assessment authorization is found in
    Iowa Code chapter 384.     The chapter recognizes that the construction
    13
    and improvement of city infrastructure is a necessary component to
    community development by establishing a procedure for the assessment
    of the costs to the benefited property. See Iowa Code § 384.61. Yet, the
    statutory scheme does not limit the power of a city to pursue public
    improvement projects through its independent authority to contract with
    subdividers to share in the costs of installing public improvements. See
    id. § 384.41(3). Generally, a city is authorized to enter into contracts,
    including contracts governing the construction of streets and the
    installation of public improvements. 10 McQuillin § 29:6, at 337 (3d ed.
    rev. vol. 2009); see also 13 McQuillin § 37:98, at 362 (3d ed. rev. vol.
    2008).
    Streets and other public services are a normal part of most real
    estate development, especially development projects involving the
    subdivision of land. A subdivision divides a tract of land into multiple
    lots and generally requires the development and integration of streets
    and other public services.       See Iowa Code § 354.6(1)–(2) (defining
    standards for subdivision of private property and including requirement
    that recorded subdivision plats clearly designate area reserved for streets
    and other future public areas). A subdivider works with the owner of the
    tract to ultimately develop the land into lots for sale with the goal of
    making a profit from the sale of the lots.
    The city subdivision ordinance at issue in this case regulates the
    construction standards that must be met before a final plat is approved
    by the city council for recording and includes a requirement that all
    subdivisions include streets and storm sewers, as well as water and
    sanitary sewer lines.      See Hampton, Iowa, Code § 170.09(18).            The
    ordinance conditions the city council’s approval of a final plat of a
    subdivision   upon   the    subdivider    “mak[ing]   and   install[ing]”   the
    14
    improvements pursuant to detailed specifications, procedures, and
    oversight by the city. Id. The ordinance does not address the authority
    of the subdivider to contract with other entities to install the
    improvements.     Generally, the obligations of one can be performed by
    another.     See Restatement (Second) of Contracts § 318, at 19 (1981)
    (noting the general rule that the duty to perform may be delegated).
    The logical premise behind the imposition of an obligation on the
    subdivider to make public improvements within a subdivision is that the
    subdivider can pass the expense of the work to lot owners by adjusting
    the price of the lots. See Preston v. Oliphant, 
    256 Iowa 128
    , 130, 
    126 N.W.2d 329
    , 329–30 (1964) (buyers of residential property sued seller for
    failing to install roads and other improvements promised to be included
    in purchase price of lot); Village Square No. 1, Inc. v. Crow-Frederick
    Retail Ltd. P’Ship, 
    551 A.2d 471
    , 474 (Md. Ct. Spec. App. 1989) (noting,
    in argument, that cost of roads and sewers provided at the expense of the
    developers is passed on by the developer to the ultimate owners of the
    property).    See generally Jerry S. Williford & C. Todd Sinnett, Tax
    Planning for the Developer:        Allocating Costs Among      Land    and
    Improvements, 103 J. Tax’n 335, 342 (2005) (recognizing developers must
    account for all expenses involved in making improvements to property
    and that improvements made to land should be allocated to the different
    lots or parcels for tax purposes). Thus, the costs of the improvements
    are ultimately borne by the property owners who are the primary
    beneficiaries of the improvements, just as is ultimately done under the
    assessment procedures of chapter 384 when the city incurs costs in
    making street improvements. See Divan Builders, Inc. v. Planning Bd. of
    Twp. of Wayne, 
    334 A.2d 30
    , 39 (N.J. 1975) (noting the end result of a
    city requiring the developer to fund improvements in a subdivision is the
    15
    same as though the city directly assessed the costs against the owners of
    the property within the subdivision).
    The fighting question presented in this case is whether the city
    may exercise its statutory assessment authority to defray the costs of
    making street improvements as a part of the development of a
    subdivision when an ordinance conditions the city’s approval of the
    subdivision plat on the private subdivider making the improvements. At
    its core, the resolution of this issue hinges on a more narrow question of
    whether the ordinance imposed a mandatory enforcement obligation on
    the city.
    Generally, the question whether a municipality is required to
    enforce its ordinances has been obliquely addressed within the
    parameters of such legal concepts as standing and the discretionary
    function immunity. See Schmitz v. City of Dubuque, 
    682 N.W.2d 70
    , 74
    (Iowa 2004) (applying a two-part test for discretionary immunity to
    actions of city in constructing trail); White v. Robinson, 
    260 S.W.3d 463
    ,
    472 (Tex. Ct. App. 2008) (holding referendum sponsors lacked standing
    to challenge city’s construction of, and refusal to enforce, an adopted
    proposition).   Additionally, other legal theories have surfaced in the
    context of tort liability involving the failure to enforce an ordinance. See
    Ball v. Town of Woodbine, 
    61 Iowa 83
    , 85, 
    15 N.W. 846
    , 847 (Iowa 1883)
    (holding city not liable when council members, who shot off fireworks in
    violation of city ordinance, injured citizens); accord Harris v. City of
    Des Moines, 
    202 Iowa 53
    , 58, 
    209 N.W. 454
    , 455 (1926) (holding failure
    to enforce municipal ordinance regulating streets did not impose liability
    on municipality). Yet, the action in this case is framed solely in equity
    and only seeks a declaration that the city may not exercise its
    assessment authority.     Thus, we must decide if the city’s failure to
    16
    enforce an ordinance conditioning approval of a subdivision plat upon
    the subdivider financing street improvements prevents the city from
    waiving the condition and instead exercising its statutory authority to
    assess the costs it incurs in making the improvements.
    One approach we have taken to decide whether the governmental
    failure to fulfill the terms of an ordinance affects the validity of
    subsequent government action is to consider whether the specific terms
    of the ordinance are mandatory or directory.       Cf. Taylor v. Dep’t of
    Transp., 
    260 N.W.2d 521
    , 522 (Iowa 1977) (considering whether a statute
    is mandatory or directory). Under this approach, when the enactment at
    issue does not expressly resolve the question, we look to the main
    objective of the enactment to determine if the requirement is essential to
    furthering the objective.    Id. at 522–23.   If it is, the requirement is
    ordinarily mandatory, and the failure to perform the requirement
    invalidates the subsequent governmental action. Id. While other related
    approaches could be considered, we find this approach particularly
    helpful in the resolution of this case.
    In making this determination under subdivision regulations, we
    also apply the statutory requirements for cities considering subdivision
    plats under chapter 354.      If the ordinance at issue is required to be
    enforced, the city is directed by the legislature to “apply reasonable
    standards and conditions in accordance with applicable . . . ordinances.”
    Iowa Code § 354.8.      Otherwise, the city is granted the authority to
    approve plats for recordation by considering “the possible burden on
    public improvements and . . . a balance of interests between the
    proprietor, future purchasers, and the public interest in the subdivision.”
    Id.
    17
    In this case, the City of Hampton ordinance does not expressly
    resolve the issue, but the purpose of the condition is expressly described
    in the opening paragraph of the subdivision regulation chapter.        The
    declared purpose or objective is “to establish minimum standards for the
    design, development and improvement” of subdivisions so as to protect
    “existing developments” and to make adequate provisions “for public
    services,” and   to   promote “health, safety,     and general welfare.”
    Hampton, Iowa, Code § 170.01.       Additionally, the ordinance seeks to
    ensure improvements are uniformly made in accordance with certain
    specifications to the city’s satisfaction.   Id. § 170.03.   The ordinance
    describes specific requirements for the submission of subdivision plats
    for approval by the city, and it specifies a host of rules required for the
    development of a subdivision. Thus, we must decide if the city’s failure
    to enforce the plat approval condition requiring the subdivider to
    personally finance the improvements would undermine these objectives.
    We recognize a certain symmetry in using subdividers to help build
    streets and install other public services within the development of a city.
    The city, of course, has the authority to make such improvements and to
    pass the costs onto abutting property owners who most benefit from the
    improvements     through   assessment    procedures.     See   Iowa   Code
    § 384.38(1)–(2). Yet, the same end result occurs when the requirement to
    make improvements within a subdivision is given to a subdivider. When
    improvements are made by a subdivider, the costs of the improvements
    are still passed to those property owners who most benefit from the
    improvements, but through the use of free-market forces instead of a
    forced assessment.    In many instances, the two approaches work to
    develop city streets without overlap. However, unique circumstances can
    18
    arise that may justify a shared development effort between subdividers
    and the city. The background of this case presents a good illustration.
    Here, the particular area of the subdivision where the property was
    divided into lots was separated from the nearest existing street by over
    300′.    This portion of the subdivision could not be connected to the
    existing street without extending the street to reach the area containing
    the subdivided lots.     The presence of the extended street and the
    underground improvements arguably benefited property owners outside
    the subdivision.     If the subdivider was required to make all of the
    improvements, the subdivider would have no means to pass the costs to
    those outside property owners. Instead, the subdivider could only pass
    on the costs through the sale of the lots. The result is the property along
    the street but outside the plat would receive the benefit of the street
    without the owner paying for the benefit. Moreover, the sale price of the
    subdivided lots within the subdivision may need to be increased beyond
    what the market forces would bear, forcing the subdivider to ultimately
    shoulder the costs.      In any event, such unique circumstances can
    disrupt the normal symmetry of the city-subdivider approach to make
    public improvements.      Importantly, the objectives of the ordinance to
    protect existing developments, make adequate provisions for public
    services, and promote the general welfare could be undermined if the city
    and subdivider could not work together to make street improvements
    under some circumstances. The city’s development through subdivision
    could be adversely affected, and street development near existing
    developments could suffer as well.
    Thus, we conclude that the portion of the ordinance requiring the
    subdivider to make improvements as a condition to the city’s approval of
    a plat does not describe a mandatory enforcement duty on the city.
    19
    Instead, the city may waive its subdivision plat approval standards when
    the objectives of its standards would not be met by strict adherence to
    them and when waiver would not otherwise conflict with the mandatory
    platting standards contained in Iowa Code chapter 354.             See York v.
    Town of Ogunquit, 
    769 A.2d 172
    , 177 (Me. 2001) (recognizing the
    authority of city planning board to waive subdivision standards but not
    to waive zoning provisions subject to analysis mandated by state
    statute); see also City of Mequon v. Lake Estates Co., 
    190 N.W.2d 912
    ,
    917 (Wis. 1971) (finding city acted within delegated authority conferred
    by legislature in varying subdivision standards in ordinance in special
    agreement with subdivider). But see Allen v. St. Tammany Parish Police
    Jury, 
    690 So. 2d 150
    , 153 (La. Ct. App. 1997) (noting language
    conditioning     final   subdivision   approval   upon    design   details   and
    specifications    approved    by   department     of   public   works   imposed
    mandatory obligation on city). Such an approach is consistent with the
    legislature’s grant of authority to cities in development planning as well
    as our court’s flexible approach to city subdivision decisions. See Iowa
    Code § 354.1(3); see also Blumenthal Inv. Trusts, 636 N.W.2d at 268.
    Consequently, the city’s failure to require the subdivider to personally
    make all improvements does not invalidate the authority of the city to
    assess property owners under chapter 384.
    V. Special Benefit to Property Assessed.
    The statutory scheme for the assessment of costs incurred by a
    city in making public improvements provides that lots in the assessment
    district may be assessed according to the special benefit conferred on the
    property.      Iowa Code § 384.61.       One qualification, however, is the
    assessment cannot exceed twenty-five percent of the property value. Id.
    § 384.62(1).      The statutory assessment scheme seeks to protect
    20
    individual   property   owners     from     subsidizing   the   benefit   from
    improvements enjoyed by the public in general. Horak Prairie Farm, L.P.
    v. City of Cedar Rapids, 
    748 N.W.2d 504
    , 507 (Iowa 2008).
    When a municipality has properly made public improvements, a
    presumption of necessity arises, as well as a presumption that some
    benefit has resulted to assessed property owners.          Goodell v. City of
    Clinton, 
    193 N.W.2d 91
    , 93 (Iowa 1971). The law not only presumes the
    assessments are correct, but it also presumes that they do not exceed
    the special benefit derived.     Id.   Many factors are considered in the
    assessment, including the future use and expectations of the property,
    as well as its present use. Id. Mathematical exactness is not required.
    Gray, 797 N.W.2d at 119.
    The plaintiffs argue the new street does not provide any special
    benefit to them. They point out that the street does not provide access
    that did not previously exist. Moreover, they point out that any benefit
    from the street is offset by the loss of privacy. Primarily, the plaintiffs
    argue the street is not something they desired and was only installed to
    allow access to the new lots within the subdivision.
    The arguments made by the plaintiffs are familiar.         In Gray, we
    reiterated our understanding of the displeasure felt by property owners
    who are asked to share in the expense of street improvements they did
    not want or believe will provide any benefit to them. Id. at 118–19. Yet,
    these arguments are insufficient to rebut the presumption that the
    assessments were correct. Id. at 119.
    The property in dispute in this case was ultimately assessed by
    considering a wide variety of factors in conjunction with the Flint
    Formula. See Milton O. & Phyllis A. Thorson Revocable Estate Trust v.
    City of W. Des Moines, 
    531 N.W.2d 647
    , 650 (Iowa Ct. App. 1995)
    21
    (identifying factors the court will consider when distinguishing between a
    general benefit and a special benefit). Even though the plaintiffs testified
    they would not use the street, the improvements did increase the value of
    their property, especially the three parcels of land west of Oak Hill First
    Addition. The presence of the street abutting these tracts increased their
    value    as   future   residential   development.   Moreover,    the   mere
    transformation of the street from gravel and dirt to pavement conferred a
    number of benefits on the Connelly and Johnson lots located within
    Oak Hill First Addition, even though the lot owners were personally
    satisfied with a dirt street.   See Gray, 797 N.W.2d at 119 (recognizing
    that the pavement of a gravel road confers substantial benefits on
    abutting landowners).      Nevertheless, the city council understood the
    benefits to these two lots were not as great as the benefit provided to the
    other three tracts and substantially reduced the assessments. Overall,
    the plaintiffs did not establish the assessments to their property
    exceeded the special benefit provided by the improvement.               The
    assessments did not exceed twenty-five percent of the value of the
    property owned by the plaintiffs.
    VI. Conclusion.
    We have carefully considered all issues raised in this appeal. We
    affirm the decision of the district court.
    AFFIRMED.
    22