Trustees of Dartmouth College v. Town of Hanover , 171 N.H. 497 ( 2018 )


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    THE SUPREME COURT OF NEW HAMPSHIRE
    ___________________________
    Grafton
    No. 2017-0595
    TRUSTEES OF DARTMOUTH COLLEGE
    v.
    TOWN OF HANOVER
    Argued: June 27, 2018
    Opinion Issued: November 6, 2018
    McLane Middleton, P.A., of Manchester (Bruce W. Felmly and Wilbur A.
    Glahn on the brief, and Mr. Felmly orally), and Orr & Reno, P.A., of Concord
    (William C. Chapman and Jeremy D. Eggleton on the brief), for the plaintiff.
    Town of Hanover, filed no brief.
    Cleveland, Waters and Bass, P.A., of Concord (David W. Rayment and
    Mark S. Derby on the brief, and Mr. Rayment orally), for the intervenors.
    DONOVAN, J. The plaintiff, the Trustees of Dartmouth College, appeals
    an order of the Superior Court (Bornstein, J.) upholding the denial of its
    application for site plan approval by the Town of Hanover’s Planning Board for
    the construction of an Indoor Practice Facility (IPF). The planning board
    denied approval of the application upon finding that it failed to comply with
    three general considerations of Hanover’s site plan regulations. The trial court
    upheld the planning board’s decision following a hearing at which several
    Hanover residents owning properties abutting the proposed site intervened to
    defend the board’s decision (abutters). We reverse and remand because the
    evidence does not reasonably support the trial court’s findings. The certified
    record confirms that the board based its denial of Dartmouth’s application
    upon subjective and personal feelings and the trial court unreasonably adopted
    a rationale not supported by the record to affirm the board’s decision.
    The following facts were found by the trial court or are otherwise evident
    from the certified record. In March 2016, Dartmouth submitted its site plan
    application seeking approval of the construction of a 69,860 square foot IPF
    within the college’s 41-acre athletic complex located in Hanover’s Institutional
    Zoning District (I-District). The athletic complex includes two, similarly-sized,
    indoor sports facilities — the Thompson Arena and the Boss Tennis Center —
    as well as several outdoor athletic fields, tennis courts, and a large parking lot.
    Dartmouth proposed building the IPF next to the Boss Tennis Center on an
    area known as the “sunken garden,” at the northeast corner of the athletic
    complex. The proposed site abuts a neighborhood of single-family homes on
    Tyler Road and Chase Road located in Hanover’s Single Residence zoning
    district (SR-District).
    Hanover created the I-District as a “special district” to meet certain needs
    of the institution, here, the college — by permitting the development of facilities
    for educational and recreational purposes and large buildings that could
    accommodate warehouse and medical center uses. Town of Hanover Zoning
    Ordinance (HZO) § 405.6(A), (B). The town enacted stringent height limitations
    and setback requirements for buildings within the I-District that are in close
    proximity to residential zoning districts. 
    Id. § 405.6(C)(2),
    (3). For example, no
    building within the I-District may be placed within 75 feet of a residential
    zoning district boundary, 
    id. § 405.6(C)(2),
    buildings constructed within 150
    feet of a residential zone may not be more than 35 feet in height, and buildings
    set back 150 feet or more from a residential zone may be, on average, a
    maximum of 60 feet in height. 
    Id. § 405.6(C)(3);
    see also HZO § 505.1(B)(2)
    (describing the method of calculating height of buildings in the I-District).
    Hanover’s SR-District provides for one-family residences that are “typical
    [to] many New England villages” along with other types of uses by special
    exception, including agricultural and governmental uses that complement and
    serve single-family homes. 
    Id. § 405.8(A),
    (B). Additional uses are permitted
    within the SR-District by special exception, such as governmental uses for
    public safety, education, and recreation. 
    Id. § 405.8(B).
    The interplay and
    impacts, both real and potential, between the uses within the I-District and the
    abutting SR-District became a focal point of the opposition to the IPF and the
    board’s consideration of Dartmouth’s site plan application.
    2
    Between April and December 2016, the board held no fewer than 16
    meetings, including two site visits, during its consideration of the IPF. The
    abutters who reside on Tyler and Chase Roads and own properties closely
    abutting the athletic complex vigorously opposed the IPF.1 Dartmouth revised
    its site plan application several times to address their concerns, by, inter alia:
    (1) adding plantings of landscape screening in coordination with the requests
    and preferences of the abutting neighbors; (2) modifying the size of the IPF’s
    windows and adding the installation of automatic shades and window glazing
    to reduce light spill from the proposed building; and (3) adjusting the IPF’s roof
    line to lower the building’s height profile.
    Although the Hanover Zoning Administrator informed the board that the
    IPF would be fully compliant with the town’s zoning ordinances, including
    ordinances regulating height restrictions, setback requirements and building-
    to-lot size ratio limitations, the abutters complained about the negative impacts
    the IPF would impose on their neighborhood, including a concern that the
    building’s height would block an unreasonable amount of sunlight and cast
    shadows on their homes. In response, Dartmouth conducted a study of this
    potential impact and presented its findings to the board by way of an animated
    shadow study.2 The abutters prepared their own interpretation of the college’s
    shadow study that purported to calculate the duration of time that the IPF
    would cast shadows on their residences.
    In anticipation of the board’s final deliberations on the college’s
    application, Hanover’s planning board staff prepared a final memorandum
    recommending the approval of the application with 21 conditions. Dartmouth
    agreed to comply with all 21 conditions. In December 2016, the board
    1 In its filings, Dartmouth alleges that the vice-chair of the planning board improperly influenced
    the board’s decision by actively participating in the opposition to the college’s site plan. This
    board member recused herself from the board’s deliberations on the application because her
    residence closely abuts the athletic complex. Dartmouth argues that, despite this member’s
    recusal, she represented the abutters and voiced her strong opposition to the project in letters,
    e-mails and formal presentations to her fellow board members. The college complains that the
    recused board member’s influence on the board was apparent, given that the board ultimately
    decided to deny the application based upon the three general considerations that she advanced
    throughout the site plan review process. The abutters counter that Dartmouth did not raise this
    issue with the trial court. We agree with the abutters. Dartmouth did not raise this issue with
    the trial court or identify it in the college’s notice of appeal. Thus, we do not opine on the
    propriety of the recused board member’s participation in the opposition to the college’s
    application.
    2 The record reveals that the abutters’ opposition maintained numerous objections that were not
    relied upon by either the board or the trial court and, thus, are not pertinent to this appeal,
    including complaints with: (1) the project’s impact on the town’s storm water management
    system; (2) the building’s lack of architectural detail; (3) the negative impact the IPF posed to the
    abutters’ property values; and (4) the potential noise and sound pollution created by the proposed
    building. In response to these complaints, Dartmouth retained professionals to study these
    potential impacts and either modified its site plan to address these concerns or presented
    sufficient evidence to rebut them.
    3
    deliberated on the final site plan application and discussed, among other
    things, the members’ feelings about the project’s scale and the aesthetic effect
    it would have on the adjacent neighborhood. Following deliberations, the
    board voted 4-1 to deny the application and issued a notice that enumerated
    three reasons for its decision. In doing so, the board found that the college’s
    site plan application:
    1) Does not conform with the Hanover Master Plan (As cited in
    Article IX A 2b of the Site Plan Review Regulations);
    2) Negatively impacts the abutters, neighborhood and others, town
    services and fiscal health (As cited in Article IX A 2c Site Plan
    Review Regulations); and
    3) Does not relate to the harmonious and aesthetically pleasing
    development of the town and its environs (As cited in Article IX
    A 2h Site Plan Review Regulations).
    Dartmouth appealed the board’s decision to the trial court, arguing that
    the three regulations relied upon by the board are vague, ambiguous, and not
    proper standards by which to review a site plan application under either RSA
    674:44 (2016), or the New Hampshire and United States Constitutions. N.H.
    CONST. pt. I, art. 15; U.S. CONST. amend. XIV. The college also maintained
    that the board impermissibly based its decision on personal and subjective
    feelings, rather than objective and discernible standards. Hanover appeared
    but deferred to the intervening abutters with respect to Dartmouth’s appeal.
    The abutters argued that the board’s decision was legal and reasonable and
    maintained that the IPF: (1) is massive and out of character with the abutting
    residential neighborhood; (2) fails to provide for the harmonious, aesthetically
    pleasing, or attractive development of the town; and (3) is capable of blotting
    out the sun and shadowing homes in the abutting neighborhood for 7 months
    of the year.
    The trial court held a one-hour hearing in August 2017 following
    substantial briefing and arguments submitted by the college and the abutters.3
    The record of the hearing establishes that the parties did not dispute that the
    application complied with the requirements of Hanover’s zoning ordinances
    applicable to the I-District. Nonetheless, the trial court subsequently upheld
    the board’s decision, ruling that the regulations the board relied upon are
    valid. The trial court also ruled that the board did not err by basing its
    decision, “to a considerable degree on its concerns about the project’s impacts
    3The Town of Hanover did not participate in the appeal other than to defer to the abutters and,
    assuming the college prevailed on appeal, agree to Dartmouth’s request for the “builder’s remedy”
    provided the college complied with the conditions to approval recommended by the town’s
    planning board staff.
    4
    on the abutting homes, as opposed to the entire ‘neighborhood’ of the proposed
    facility.” The trial court further ruled that the board members did not
    impermissibly rely upon their personal feelings, and concluded that the board’s
    decision was lawful and reasonably based upon a particular concern that the
    IPF “would block an unreasonable amount of sunlight from reaching abutting
    homes.”
    On appeal, Dartmouth argues that: (1) the board and the trial court erred
    by relying upon general considerations of Hanover’s site plan regulations to
    deny the application because the general considerations are vague and fail to
    establish clear standards necessary to assess the application under our
    “average person” standard, see Town of Freedom v. Gillespie, 
    120 N.H. 576
    ,
    580 (1980) (ordinance must be framed in terms sufficiently clear, definite, and
    certain, to enable an average man after reading it to understand when he is
    violating its provisions); and (2) the board improperly based its decision on
    personal feelings and engaged in ad hoc decision-making, while the trial court
    erroneously relied upon unsupported claims and adopted a rationale, not
    supported by the evidence or the board’s deliberations, to affirm the board’s
    decision. The abutters respond by maintaining that, in general and as applied
    to Dartmouth’s application, the location of the proposed IPF provided the
    necessary “observable character,” see Town of Deering v. Tibbetts, 
    105 N.H. 481
    , 485-86 (1964), such that the “ordinary person” could understand and
    comply with the general considerations. The abutters also argue that,
    pursuant to our deferential standard of review, the record supports the trial
    court’s determination that Dartmouth failed to meet the general considerations.
    We now turn to the applicable standard of review. The trial court’s
    review of a planning board’s decision is governed by RSA 677:15, V (2016),
    which provides that the trial court “may reverse or affirm, wholly or partly, or
    may modify the decision brought up for review when there is an error of law or
    when the court is persuaded by the balance of probabilities, on the evidence
    before it, that [the board’s] decision is unreasonable.” As such, the trial court’s
    review is limited. Motorsports Holdings v. Town of Tamworth, 
    160 N.H. 95
    , 99
    (2010). The trial court must treat the factual findings of the planning board as
    prima facie lawful and reasonable and cannot set aside its decision absent
    unreasonableness or an identified error of law. 
    Id. The appealing
    party bears
    the burden of persuading the trial court that, by the balance of probabilities,
    the board’s decision was unreasonable. 
    Id. The trial
    court determines, not
    whether it agrees with a planning board’s findings, but rather whether there is
    evidence upon which its findings could have been reasonably based. 
    Id. Our review
    is similarly limited. We will reverse a trial court’s decision on appeal
    only if it is not supported by the evidence or is legally erroneous. See 
    id. We review
    the trial court’s decision to determine whether “a reasonable person
    could have reached the same decision as the trial court based on the evidence
    before it.” Star Vector Corp. v. Town of Windham, 
    146 N.H. 490
    , 493 (2001)
    (quotation omitted).
    5
    Bearing in mind the foregoing standards of review, we consider
    Dartmouth’s second argument on appeal. Specifically, we will address the
    college’s argument that the trial court’s decision is unreasonable and legally
    erroneous because the court: (1) relied upon factual claims and a rationale, not
    supported by the evidence or the board’s deliberations; and (2) upheld a
    planning board decision that was based upon ad hoc decision-making and
    personal feelings, rather than objective or discernible facts, to find that the
    application failed to meet the general considerations. Before assessing the
    merits of this argument, we briefly review the planning board’s duties and
    obligations in conducting the site plan review process.
    “Site plan review is designed to insure that uses permitted by a zoning
    ordinance are ‘constructed on a site in such a way that they fit into the area in
    which they are being constructed without causing drainage, traffic, or lighting
    problems.’” Summa Humma Enters. v. Town of Tilton, 
    151 N.H. 75
    , 78 (2004)
    (quoting 15 P. Loughlin, New Hampshire Practice, Land Use Planning and
    Zoning § 30.01, at 425 (2000)). Site plan review is intended to ensure “that
    sites will be developed in a safe and attractive manner and in a way that will
    not involve danger or injury to the health, safety, or prosperity of abutting
    property owners or the general public.” 
    Id. (quotation omitted).
    “These
    purposes are accomplished by subjecting the plan to the very expertise
    expected of a planning board in cases where it would not be feasible to set forth
    in the ordinance a set of specific requirements upon which a building inspector
    could readily grant or refuse a permit.” 
    Id. (quotation omitted).
    Site plan
    review is, nonetheless, limited. 
    Id. A planning
    board’s review “‘does not give
    the planning board the authority to deny a particular use simply because it
    does not feel that the proposed use is an appropriate use of the land. Whether
    the use is appropriate is a zoning question.’” 
    Id. (quoting Loughlin,
    supra
    § 30.09, at 437).
    Here, the trial court ruled that the board reasonably concluded that
    Dartmouth’s application failed to meet the general considerations set forth in
    Article IX 2(c) and (h) of Hanover’s site plan regulations. The trial court found
    that the board denied the application out of a concern that the IPF “would
    block an unreasonable amount of sunlight from reaching the abutting homes.”
    As support for this finding, the trial court cited certain statements made by
    board members during their deliberations and relied upon the report prepared
    by the abutters in response to Dartmouth’s shadow study. The trial court
    quoted this report and expressly relied upon its conclusion that “‘residents of
    neighboring homes will lose a significant portion of the direct sunlight when
    days are shortest,’ and in some cases, ‘more than 10 [percent] of direct sunlight
    will be lost.’” Based on this evidence, the trial court found that “[b]oard
    members could reasonably have concluded that the proposed facility would
    block a significant amount of sunlight from reaching abutting homes [which] is
    objectively both a negative impact upon abutters and inconsistent with the
    6
    harmonious and aesthetically pleasing development of the environs of the
    proposed facility.”
    The record of the board’s deliberations, however, does not support the
    trial court’s findings or its conclusion. On the record before us, a reasonable
    person would not have found, as the court did, that the board rejected the site
    plan due to a concern that the IPF would negatively impact the neighborhood
    by blocking “a significant amount of sunlight from reaching abutting homes.”
    Cf. Motorsport 
    Holdings, 160 N.H. at 103-04
    (discussing review of certified
    record to determine whether the board sufficiently apprised the applicant of its
    reasoning in denying an application for a special use permit). Our review of the
    transcript of the board’s deliberations reveals that two board members
    mentioned “general darkening,” “blocked views,” the “absence of light,” and
    “shading” as potential concerns with the IPF. But, the record also reflects that
    these board members did not base their decision on any one of these factors.
    Rather, board member Carter acknowledged that “our own site plan regulations
    are not sufficiently developed on these topics . . . to deny the IPF [on that
    basis].” Board member Sims reasoned that:
    What we also have to recognize is that there is some shading
    probably already caused by the existing trees, which are already
    quite tall and will continue to grow, I hope, in some respects for
    many years to come. So the question is, how much more shading
    on top of the existing shading, will the building create, and is it
    excessive? And I don’t know how we can measure that.
    The remaining two board members who voted to deny the application did not
    reference shadows, shading, or any other objective criteria. Instead, board
    member Mayor concluded that the “building itself, in its location as proposed,
    looms as an affront to the adjacent neighborhood,”4 and board member
    Criswell reasoned that “the crux of the matter has been the scale and proximity
    of the building to the neighborhood and how those things, in turn, affects [sic]
    the character.”
    The trial court misinterpreted the record because, contrary to its
    findings, the board did not deny Dartmouth’s application because the IPF
    would deprive abutting homes of sunlight. Although the trial court
    acknowledged our prior rulings prohibiting planning board decisions based
    upon personal opinions or “vague concerns,” see Ltd. Editions Props. v. Town
    of Hebron, 
    162 N.H. 488
    , 497 (2011), the court unreasonably relied upon facts
    that are not supported by the record of the board’s deliberations to justify the
    board’s decision. Because the record does not support the trial court’s finding
    4 We recognize that board member Mayor also commented on his responsibility to protect the
    neighborhood from a loss of property values as a factor in his decision. We specifically address
    this issue later in this opinion.
    7
    that the board rejected the application out of a particular concern that the IPF
    would block an unreasonable amount of sunlight from reaching abutting
    homes, the trial court’s decision is erroneous.
    Moreover, even if the trial court could have reasonably found that the
    board’s deliberations reflect a concern with the IPF’s potential impact on
    blocked sunlight and shading, the record does not reasonably support this
    conclusion. In its order, the trial court relied upon the conclusions of the
    abutters’ analysis of the college’s shadow study that purported to calculate the
    hours in a day during which the IPF would cast shadows on five abutting
    homes between September 21 and March 21. Based upon these conclusions,
    the trial court gathered that “the facility would block up to over an hour of
    mostly afternoon sunlight from reaching certain homes during some months of
    the year.”5
    Absent from the trial court’s analysis, however, is any recognition of the
    impact caused by the existing tree line within the border between the athletic
    complex and the abutting properties. Notably, the record includes evidence
    that the abutters’ analysis of the college’s shadow study acknowledged that
    “[t]he presence of foliage on the trees obscures the impact of the IPF shadows”
    and board member Sims identified shading caused by existing trees as a basis
    for not relying upon this potential impact as a rationale for denying the
    application. Dartmouth’s animated shadow study surveyed trees on the
    college’s property for height and foliage in an effort to accurately depict
    darkening or shadowing.6 The college’s study concluded that any shading that
    could be attributed to the IPF was heavily intertwined with the shadows cast by
    existing buildings and trees located within the athletic complex that bordered
    the abutters’ residences. The trial court ignored the findings reached by
    Dartmouth’s expert shadow study and unreasonably adopted the abutters’
    conclusions without considering whether their conclusions were reasonably
    based upon objective facts, rather than vague and unsupported concerns.
    The abutters argue that the board was justified in not crediting
    Dartmouth’s shadow study. This argument, however, misses the point because
    the board did not rely upon shadowing, darkening, or the abutters’ shadow
    report to deny the application. While the board may have been free to question
    and reject the methodology or conclusions of the college’s expert study, see
    Vannah v. Bedford, 
    111 N.H. 105
    , 112 (1971), overruled on other grounds by
    Cook v. Town of Sanbornton, 
    118 N.H. 668
    (1978), the trial court could not
    5 To the extent the trial court relied on the abutters’ report in making any findings with regard to
    shadows or darkening of the abutting neighborhood, these findings and conclusions are not
    reasonably supported by the abutters’ study of potential shading on the five closest, abutting
    residences.
    6 We note that the college’s study did not include animations of shadowing created by the existing
    trees located on the neighboring properties on Tyler Road. We thus find it reasonable to conclude
    that the conclusions of the college’s shadow study are conservatively drawn.
    8
    have reasonably ignored the college’s study and adopted the abutters’
    conclusory opinions when the record reflects that: (1) the board did not rely on
    the abutters’ analysis to deny the application; and (2) the abutters’ analysis
    was based upon vague and unsupported concerns and not objective facts.
    Our previous rulings do not support the trial court’s deference to the
    board’s decision under these circumstances. In Continental Paving v. Town of
    Litchfield, 
    158 N.H. 570
    (2009), for example, we upheld the trial court’s
    reversal of the zoning board of adjustment’s denial of a special exception where
    the applicant presented uncontroverted expert evidence in support of the
    exception and the opposing lay opinions and general information were
    insufficient to refute the experts’ conclusions. Continental 
    Paving, 158 N.H. at 573-74
    . Here, the record fails to support either of the trial court’s conclusions
    that the board denied the application out of a concern that the IPF would
    deprive abutting homes of sunlight, or that there is sufficient support in the
    record to conclude that the IPF would negatively impact the abutting homes in
    this manner. Accordingly, we cannot conclude that a reasonable person could
    have reached the same decision as the trial court based on the evidence before
    it.
    We next turn to Dartmouth’s contention that the trial court erroneously
    found that the board did not rely on personal feelings and ad hoc decision-
    making in deciding that the application failed to meet Hanover’s general
    considerations. As we have previously noted, the board’s notice of action relied
    upon three general considerations of Hanover’s site plan regulation when it
    denied the college’s application. The trial court, however, only considered the
    board’s determination that the site plan failed to meet two of these general
    considerations, Article IX 2(c) and (h) of Hanover’s site plan regulations,
    because the abutters implicitly conceded the illegality of the board’s denial of
    the application based upon its nonconformance with the Hanover Master Plan.7
    We will similarly limit our review to the two general considerations relied upon
    by the board and considered by the trial court.
    The interpretation of a planning board’s regulations presents a question
    of law for this court to decide and we are not bound by the interpretation of the
    planning board. Lemm Development Corp. v. Town of Bartlett, 
    133 N.H. 618
    ,
    620 (1990). Moreover, a planning board’s decision “must be based upon more
    than the mere personal opinions of its members.” Ltd. Editions 
    Props, 162 N.H. at 497
    . Although the members of a planning board are entitled to rely, in
    7 In Rancourt v. Town of Barnstead, 
    129 N.H. 45
    , 48-49 (1986), we rejected a planning board’s
    reliance on limited growth recommendations in a master plan when no such limited growth
    legislation had been implemented by an action of the local legislative body pursuant to State
    statutes. Here, counsel for the abutters informed the trial court that the board members who
    voted to deny approval of the application did not base their decision on a lack of conformity with
    the master plan, although the record suggests otherwise. Nonetheless, we need not address this
    aspect of the board’s decision because this issue was not considered by the trial court.
    9
    part, on their own judgments and experiences, the board, as a whole, “may not
    deny approval on an ad hoc basis because of vague concerns.” 
    Id. The board
    decided that Dartmouth’s application failed to meet Article IX
    2(c) because the IPF “[n]egatively impacts the abutters, neighborhood and
    others, town services and fiscal health.” The board also found that the IPF
    failed to meet Article IX 2(h) of Hanover’s site plan regulations, which requires
    the board to assess the “relationship of the project to the harmonious and
    aesthetically pleasing development of the town and its environs.” The trial
    court ruled that the board could have reasonably found that the site plan
    application failed to meet Article IX 2(c) because the IPF “would block a
    significant amount of sunlight from reaching abutting homes.” However, as we
    previously explained, this ruling is inconsistent with the reasoning articulated
    by the board during its final deliberations. Thus, the trial court erroneously
    interpreted the evidence and misconstrued the board’s deliberations in
    upholding the board’s decision that the application failed to satisfy this general
    consideration. The trial court similarly erred by sustaining the board’s
    determination that the IPF failed to meet Article IX 2(h). The trial court found
    that the board could properly “consider and give appropriate weight to a
    proposal’s effects on abutting properties,” and with respect to Article IX 2(h), its
    relationship with the “‘environs’ of a project.” Yet, both general considerations
    explicitly require an assessment of the project’s impact and relationship to the
    development of the neighborhood, the town, and its environs, not just its
    impact on, and relationship with, abutting properties, or “the environs of the
    project.”
    When interpreting planning board regulations, which we do de novo, the
    general rules of statutory construction govern our review. See Doyle v. Town of
    Gilmanton, 
    155 N.H. 733
    , 735 (2007). Thus, the words and phrases of the
    regulations should be construed according to the common and approved usage
    of the language. 
    Id. Webster’s Third
    New International Dictionary defines
    “environs” as “the enclosing limits or boundaries” and “the suburbs or districts
    round about a city or other populated place.” Webster’s Third New
    International Dictionary 760 (unabridged ed. 2002). Applying the approved
    and common usage of the term “environs” to Article IX 2(h) requires an
    assessment of the proposal’s relationship to the surrounding districts and not
    just to its relationship to the surroundings of the proposed site of the project.
    The trial court and the board applied this consideration too narrowly.
    The environs to which this general consideration applies includes the
    I-District, as well as the SR-District, and a proper assessment of the project’s
    relationship to the harmonious and aesthetically pleasing development, must,
    at the very least, include both districts. The SR-District is zoned for one-family
    residences “as is typical [to] many New England villages,” with other types of
    uses allowed by special exception, including agricultural and governmental
    uses that complement and serve single-family homes. HZO § 405.8. The
    10
    I-District is zoned to meet the needs of the institution, or the college, and
    permits the development of facilities for educational, recreational purposes,
    including warehouses and other uses. 
    Id. § 405.6(A),
    (B). Thus, the facts at
    issue here differ from the circumstances we addressed in Tibbetts, where
    Deering sought to protect its well-defined, historic and harmonious town
    common. See 
    Tibbetts, 105 N.H. at 483-84
    . In contrast, the “observable
    character” of the neighborhood here includes two similarly-sized, indoor
    athletic facilities within a zoning district that obviously permits the
    development of buildings like the IPF. See HZO § 405.6(B). Any conclusion
    that the IPF lacks conformity or is not harmonious with the character and
    development of this neighborhood, or the town and its environs, is directly
    contradicted by the applicable zoning regulation and is unreasonable.
    The abutters further contend that the trial court properly upheld the
    board’s findings that the application failed to meet the general considerations,
    because: (1) the IPF represents a “dramatic and permanent change” to the open
    views enjoyed by the neighboring residences; and (2) is an “incongruous
    structure” that would constitute a “significant expansion” that “will certainly
    change the nature, feel and atmosphere of the neighborhood” without a
    “meaningful and harmonious transition” from the I-District to the Tyler Road
    neighborhood. They urge us to consider evidence allegedly supporting the trial
    court’s decision, such as the college’s refusal to consider alternative locations
    for the IPF, other than the sunken garden, and the project’s adverse impact on
    the property values of the abutters’ residences. Citing our decision in Quinlan
    v. City of Dover, 
    136 N.H. 226
    (1992), the abutters remind us that when “a trial
    court reaches the correct result, but on mistaken grounds, [we] will sustain the
    decision if there are valid alternative grounds to support it.” 
    Quinlan, 136 N.H. at 230
    (quotation omitted). Our review of the record, however, fails to identify a
    valid alternative ground that was considered by the board and which supports
    the trial court’s decision.
    Undoubtedly, the Tyler and Chase Road neighborhood has benefited from
    Dartmouth’s undeveloped, open fields, such as the sunken garden, within its
    athletic complex. The record confirms that the abutters opposed any
    development of the sunken garden to preserve the buffer of open space between
    the college’s athletic complex and their neighborhood. The record of the
    board’s deliberations evidences the board’s support for the abutters’ position.
    Nonetheless, a planning board cannot use the site plan review process to
    require a landowner to dedicate its own property as open space for essentially
    public use without proper compensation. See Robbins Auto Parts, Inc. v. City
    of Laconia, 
    117 N.H. 235
    , 236-37 (1977) (ruling that planning board could not
    require applicant to grant to the city an easement over the applicant’s property
    as a condition to site plan approval); Burrows v. City of Keene, 
    121 N.H. 590
    ,
    598 (1981) (arbitrary or unreasonable zoning restrictions that substantially
    deprive an owner of the economically viable use of his land constitutes a
    taking). Moreover, the added setback and height restrictions governing
    11
    I-District developments that abut residential areas already address the concern
    for a harmonious transition between zones. See HZO § 405.6(C) (2), (3). The
    record does not reasonably support a conclusion that Dartmouth should be
    prohibited from developing its property, in a manner consistent with the zoning
    requirements, and maintain open space to satisfy a general consideration for
    the harmonious and aesthetically pleasing development of the town and its
    environs. Accordingly, the trial court erred in upholding the board’s finding
    that the IPF failed to meet either Article IX 2(c) or 2(h).
    To the extent that the abutters argue that the board relied upon the
    project’s potential impact on property values, the record shows that, while one
    board member referenced property values as a factor in his decision, the other
    board members either rejected or did not mention this rationale as a basis for
    denying the site plan application. The record includes studies submitted by
    Dartmouth and prepared by a licensed appraiser who determined that the IPF
    would not impact the property values of the abutting neighborhood. Evidence
    submitted by the abutters refuting this opinion consisted of anecdotal
    statements and conclusory estimates, without supporting data, from residents
    and retired or unidentified real estate agents. Even if the board denied site
    plan approval based upon the IPF’s negative impact on property values, the
    record fails to include evidence that would reasonably support such a finding.
    See Continental 
    Paving, 158 N.H. at 574
    . If the board denied the college’s
    application because the IPF would negatively impact property values, its
    reliance upon this factor goes well beyond the board’s personal judgment and
    experience. See Condos East Corp. v. Town of Conway, 
    132 N.H. 431
    , 438
    (1989). Thus, to the extent that the trial court relied upon this same factor as
    a basis for upholding the board’s decision, the evidence does not reasonably
    support such a conclusion.
    Finally, the abutters argue that the trial court’s decision is sustainable
    because the court reasonably concluded that Dartmouth refused to mitigate
    the negative impacts of the IPF by, inter alia, placing the IPF on an alternative
    location within the athletic complex, sinking the building deeper into the
    ground, reducing its height or otherwise pursuing less impactful alternatives.
    The abutters rely upon Bayson Properties v. City of Lebanon, 
    150 N.H. 167
    (2003), as support for the proposition that an applicant’s refusal or inability to
    meet conditions necessary for planning board approval is a sustainable reason
    for denial. Bayson 
    Properties, 150 N.H. at 175-76
    . The circumstances at issue
    in Bayson, however, are inapposite to the facts in this case.
    In Bayson, we upheld the trial court’s finding that the planning board’s
    denial of a site plan application was reasonable when: (1) the board conditioned
    approval on the development of an additional landscape buffer to abate
    negative sight, noise and pollution impacts the project imposed on a
    neighboring elder care facility; and (2) the board’s decision included detailed
    findings of non-compliance with the town’s site plan regulations. 
    Id. at 174-75.
    12
    In that case, the trial court found that the board’s decision was reasonable
    because an additional landscape buffer was necessary, the applicant refused to
    meet that condition, and the applicant’s offer to reduce pollution by limiting its
    vendors’ deliveries could not be realistically enforced on private vendors. 
    Id. By contrast,
    in this case, the board did not condition approval of Dartmouth’s
    application on any condition that the college refused to meet. Rather,
    Dartmouth agreed to comply with all of the conditions the Hanover planning
    board staff recommended as conditions to site plan approval, and the board did
    not impose any other conditions as a requirement for approval.
    Unlike the circumstances reported in Bayson, the board’s decision here
    fails to include any detailed findings of non-compliance with specific site plan
    regulations or zoning ordinances. Rather, the record reflects that the planning
    board staff concluded that the application met all requirements. The record
    also establishes that the college repeatedly revised its site plan and performed
    multiple studies to determine and address the IPF’s potential impacts on the
    abutting neighborhood with respect to sound, light, property values and storm
    water discharges. In its application and its subsequent submissions to the
    board, Dartmouth repeatedly and reasonably explained why the proposed
    location of the IPF was the most logical and feasible site to accommodate the
    new facility. During its final deliberative session, board members repeatedly
    praised Dartmouth for the time and effort the college devoted to addressing the
    concerns of its neighbors. On this record, we cannot find that the evidence
    reasonably supports the trial court’s conclusion that the college refused to alter
    its site plan to address the concerns of the abutters and to comply with
    Hanover’s site plan regulations.
    Our review of the record of the board’s deliberative session supports
    Dartmouth’s contention that the board unreasonably relied upon personal
    feelings and ad hoc decision-making in denying the college’s application. This
    record reveals that the board was more concerned with the IPF’s scale and
    height, characteristics governed by specific zoning ordinances, than the
    building’s aesthetics or its allegedly negative impacts on the environs. There is
    no dispute that the application complies with all of the applicable and specific
    zoning and site plan regulations. Nonetheless, board member Criswell stated
    that, for him, “the crux of the matter [is] the scale and proximity of the building
    to the neighborhood and how those things, in turn, affect[ ] the character.” In
    explaining his vote, board member Mayor concluded simply that the “building
    itself, in its location as proposed, looms as an affront to the adjacent
    neighborhood.” We recognize that, on appeal, a planning board’s factual
    findings are considered prima facie lawful and reasonable, Motorsports
    
    Holdings, 160 N.H. at 99
    , but the planning board’s deliberations in this case
    cannot logically be considered fact-finding. Rather, the board engaged in ad
    hoc reasoning characterized by conclusory statements and personal feelings
    unsupported by the evidence or the applicable regulations.
    13
    The comments of board member Sims demonstrate the board’s reliance
    on personal feelings and ad hoc judgments to justify its finding that
    Dartmouth’s application did not meet the general considerations:
    [T]here’s no data point that can be constructed, in my thinking,
    that will help us actually measure whether [the IPF is] harmonious
    and aesthetic [sic]. It comes to be a very personal judgment as to
    whether or not we think that this building, in fact, meets that
    standard. . . . And I have come to the conclusion that I feel that it
    doesn’t meet the standard of being harmonious development and
    aesthetically — an aesthetically pleasing development, so I will vote
    to reject the motion [for approval of the application].
    (Emphases added.)
    It is well settled that a planning board is entitled to rely in part on its
    own judgment and experience when acting upon applications for site plan
    approval. Condos East 
    Corp., 132 N.H. at 438
    . Nonetheless, a board’s
    decision must be based on more than the mere personal opinion of its
    members. Id.; see also Derry Senior Dev. v. Town of Hebron, 
    157 N.H. 488
    ,
    451 (2008) (board may not deny approval on an ad hoc basis because of vague
    concerns). In this case, the certified record fails to reveal any objective
    evidence supporting the trial court’s decision. Notwithstanding our deferential
    standard of review afforded to planning board decisions, we cannot, on the
    record before us, conclude that the evidence reasonably supports the trial
    court’s decision to uphold the board’s denial of the application.
    Here, the planning board essentially decided that the IPF is: (1) too large
    and imposing, despite the project’s compliance with Hanover’s I-District zoning
    ordinances regulating a structure’s height and size; (2) too close to the abutting
    neighborhood, despite the project’s compliance with the unique setback and
    height restrictions imposed by its proximity to a residential neighborhood; and
    (3) not a harmonious or aesthetically pleasing fit with the development of the
    town and its environs, despite the fact that the IPF constitutes a permitted use
    within a “special district” that not only contemplates large warehouse and
    recreational facilities, see HZO § 405.6(A), (B), but currently includes two
    indoor sports facilities of similar sizes. A planning board cannot supersede the
    specific regulations and ordinances that control the site plan review process
    with their own personal feelings and then justify their reasoning through the
    application of general considerations. See Summa Humma 
    Enters., 151 N.H. at 78
    (site plan review “does not give the planning board the authority to deny a
    particular use simply because it does not feel that the proposed use is an
    appropriate use of the land” (quoting Loughlin, supra § 30.09, at 437)).
    We do not suggest that site plan review should be reduced to the
    mechanical process of determining conformity with specific zoning and site
    14
    plan regulations. In this case, however, the planning board’s reliance solely
    upon general considerations to override the site plan’s conformity with specific
    regulations and ordinances, without sufficient evidentiary support for doing so,
    was unreasonable. Sustaining the board’s decision here would sanction a
    denial of a property owner’s site plan application simply because board
    members felt that the owner’s permitted use of its own property was
    inappropriate. Such a finding would render zoning “obsolete, as it would afford
    no protection to the landowner.” 
    Id. at 81
    (Nadeau, J., dissenting) (quotation
    omitted); see also 15 P. Loughlin, New Hampshire Practice, Land Use Planning
    and Zoning, §30.09, at 556 (2010) (“If the use is permitted by the zoning
    ordinance, it cannot be barred by the site review process unless the use would
    create unusual public safety, health, or welfare concerns.”).
    In light of our decision, we need not address the college’s claim that the
    general considerations are vague or ambiguous. For the foregoing reasons, we
    reverse the trial court’s order upholding the planning board’s denial of
    Dartmouth’s site plan application. As we previously found, the record
    establishes that the IPF complies with Hanover’s specific zoning ordinances
    and site plan regulations. Further deliberations or fact-finding are
    unnecessary to determine whether the college’s application is lawful or
    reasonable. Therefore, Dartmouth is entitled to relief which rewards its efforts
    challenging the legality of the board’s decision and prevents retributive action
    by the municipality. Britton v. Town of Chester, 
    134 N.H. 434
    , 442 (1991).
    “‘To forsake [the college’s] reasonable development plans after all the time,
    effort and capital invested in such a challenge [would be] grossly inequitable.’”
    
    Id. at 443
    (quoting Casey v. Zoning Hearing Board of Warwick Township, 
    328 A.2d 464
    , 469 (Pa. 1974)). Thus, we grant Dartmouth’s request for the
    Builder’s Remedy provided the college complies with each of the 21 conditions
    identified by Hanover’s planning board staff and considered by the planning
    board.
    Reversed and remanded.
    LYNN, C.J., and HICKS and HANTZ MARCONI, JJ., concurred.
    15