Menard, Inc., Relator v. County of Clay , 2016 Minn. LEXIS 716 ( 2016 )


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  •                                  STATE OF MINNESOTA
    IN SUPREME COURT
    A16-0415
    Tax Court                                                                     Chutich, J.
    Took no part, Stras, J.
    Menard, Inc.,
    Relator,
    vs.                                                             Filed: November 9, 2016
    Office of Appellate Courts
    County of Clay,
    Respondent.
    ______________________
    Eric J. Magnuson, Katherine S. Barrett Wiik, Robins Kaplan L.L.P., Minneapolis,
    Minnesota; and
    Robert A. Hill, Robert Hill Law, Ltd., Maplewood, Minnesota, for relator.
    Brian J. Melton, Clay County Attorney, Jenny M. Samarzja, Chief Assistant County
    Attorney, Moorhead, Minnesota; and
    Thomas J. Radio, Felhaber Larson P.A., Minneapolis, Minnesota, for respondent.
    __________________
    SYLLABUS
    1. The tax court’s finding that the highest and best use for the taxpayer’s property
    was continued use as a big-box retail store was well supported by the record.
    2. The tax court’s depreciation calculations using the cost approach were supported
    by the evidence in the record.
    1
    3. The tax court’s determination that only three of the comparable sales offered by
    the parties were truly comparable was supported by the record.
    4. The tax court’s use of the cost approach and the way it weighted the cost and
    sales comparison approaches were within the tax court’s broad discretion for determining
    the property’s value because, whenever possible, the tax court should employ at least two
    methods to determine property value and a final determination of value may require that
    one approach be given greater emphasis.
    Affirmed.
    Considered and decided by the court without oral argument.
    OPINION
    CHUTICH, Justice.
    Relator Menard, Inc. appealed to the tax court from respondent Clay County’s
    assessment of the market value of Menard’s Moorhead home improvement retail store for
    the assessment dates of January 2, 2011; January 2, 2012; January 2, 2013; and January 2,
    2014. Following a trial, the tax court adopted market valuations below the County’s
    assessment values but above Menard’s expert appraiser’s valuation. Menard appealed.
    In this appeal from the tax court’s final order and judgment, Menard asserts that the
    tax court erred in several respects: (1) the tax court rejected Menard’s expert appraiser’s
    highest and best use determination, (2) the tax court made improper calculations when it
    determined the fair market value of the property using the cost approach, (3) the tax court
    used a “de facto averaging” of the cost approach and the sales comparison approach when
    2
    it determined the fair market value of the property, and (4) the tax court failed to adequately
    explain its reasoning.
    The County also appealed, asserting that the tax court erred in its calculations and
    conclusions of value using the sales comparison and cost approaches. Because the tax
    court did not err in its findings and did not fail to adequately explain its reasoning, we
    affirm the tax court’s value determinations.
    I.
    This appeal concerns the tax value of a Menards home improvement retail store in
    Moorhead as of January 2, 2011 through January 2, 2014. The store is located on a parcel
    of approximately 771,350 square feet with two structures. The first structure, the main
    building, consists of a single-story heated retail space with an additional mezzanine space
    and a covered and unheated garden center. The second structure is an open-air detached
    shed, used as a warehouse. Built in 2007, the structures were in good condition as of each
    assessment date, and are visible and accessible from the nearby interstate highway. The
    Clay County Assessor valued the property at $11,200,000 for all four assessment dates.
    Menard challenged these assessments, and a trial ensued before the tax court.
    Menard retained Michael MaRous to prepare an appraisal and opinion as to market
    value, and Timothy Vergin prepared an appraisal and opinion as to market value on behalf
    of the County.      MaRous conducted a sales comparison analysis and an income
    capitalization analysis as part of his appraisal, but ultimately relied on the sales comparison
    approach in his final valuation reconciliation. Vergin conducted a sales comparison
    analysis, an income capitalization analysis, and a cost analysis, assigning one-third weight
    3
    to each approach in his final valuation reconciliation. In their valuation conclusions, the
    appraisal experts differed as to a key point: the highest and best use of the subject property.
    MaRous concluded that the property was not viable as a big-box retail store if sold by
    Menard, while Vergin concluded that the property was viable as a big-box retail store.
    Finding that Menard overcame the prima facie validity of the Clay County
    Assessor’s valuation, the tax court then considered the appraisal opinions of each expert.
    The tax court rejected Menard’s highest and best use determination and instead adopted
    the County’s view that the highest and best use of the property as-vacant was commercial
    property and as-improved was continued use as a big-box retail store. The tax court
    rejected the County’s income capitalization analysis.1         After rejecting most of the
    comparable sales used in the parties’ sales comparison analyses, and making adjustments
    to the sales price of the remaining comparables, then making adjustments to the parties’
    cost analyses, the tax court gave its cost approach calculation a 60-percent weighting and
    its sales comparison approach a 40-percent weighting for appraisal years 2011 and 2012.
    The tax court assigned each approach a 50-percent weighting for valuation years 2013 and
    2014.
    The parties moved for amended findings of fact and conclusions of law, but the tax
    court adjusted its order only to account for inaccurate calculations for physical
    deterioration and to grant Menard its unopposed request for equalization relief. The
    assessed values, appraised values, and the tax court’s values for the property are as follows:
    1
    The County did not appeal this determination.
    4
    Appraisal       County        County’s          Menard’s     Tax Court      Tax Court
    Year          Assessor      Appraiser        Appraiser       Order         Amended
    (Vergin)         (MaRous)                       Order
    2011        $11,200,000    $12,000,000       $4,000,000   $7,432,100      $7,516,600
    2012        $11,200,000    $12,300,000       $4,000,000   $7,585,800      $7,681,300
    2013        $11,200,000    $12,500,000       $4,000,000   $7,219,000      $7,331,300
    2014        $11,200,000    $12,700,000       $4,000,000   $7,393,600      $7,556,200
    Menard appealed the tax court’s decision, arguing that the tax court erred in
    rejecting MaRous’s highest and best use determination, in its cost approach calculations,
    in averaging the sales comparison and cost approaches, and in failing to adequately explain
    its reasoning. The County also appealed, contending that the tax court erred in accepting
    parts of MaRous’s appraisal report and testimony, in excluding post-sale expenditures and
    other comparable sales in its sales comparison approach, and in excluding indirect soft
    costs in its cost approach.
    “Our review of [a] final order of the tax court is limited.” S. Minn. Beet Sugar Coop
    v. Cty. of Renville, 
    737 N.W.2d 545
    , 551 (Minn. 2007). We will not overturn a tax court’s
    valuation unless the valuation is clearly erroneous. Equitable Life Assurance Soc’y of U.S.
    v. Cty. of Ramsey, 
    530 N.W.2d 544
    , 552 (Minn. 1995). The tax court’s valuation is clearly
    erroneous when “the evidence as a whole does not reasonably support the decision,” Lewis
    v. Cty. of Hennepin, 
    623 N.W.2d 258
    , 261 (Minn. 2001), and we are “left with a ‘definite
    and firm conviction that a mistake has been committed,’ ” KCP Hastings, LLC v. Cty. of
    Dakota, 
    868 N.W.2d 268
    , 273 (Minn. 2015) (quoting Equitable Life Assurance 
    Soc’y, 530 N.W.2d at 552
    ).
    5
    Our deferential review is rooted in the separation of powers and the inexact nature
    of real estate appraisal. Cont’l Retail, LLC v. Cty. of Hennepin, 
    801 N.W.2d 395
    , 399
    (Minn. 2011).    We have accepted even abbreviated explanations of the tax court’s
    reasoning. See Kohl’s Dep’t Stores, Inc. v. Cty. of Washington, 
    834 N.W.2d 731
    , 734-35
    (Minn. 2013); Harold Chevrolet v. Cty. of Hennepin, 
    526 N.W.2d 54
    , 58 (Minn. 1995)
    (“The inexact nature of property assessment necessitates that this court defer to the decision
    of the tax court.”). We will reject the tax court’s reasoning, however, when the tax court’s
    decision is “clearly against the weight of the evidence,” Am. Express Fin. Advisors, Inc. v.
    Cty. of Carver, 
    573 N.W.2d 651
    , 659 (Minn. 1998), or the tax court has “completely failed
    to explain its reasoning,” Nw. Nat’l Life Ins. Co. v. Cty. of Hennepin, 
    572 N.W.2d 51
    , 52
    (Minn. 1997).
    II.
    We first consider the tax court’s rejection of Menard’s highest and best use
    determination. All property must be valued at its market value, Minn. Stat. § 273.11, subd.
    1 (2014), which is the “usual selling price at the place where the property . . . shall be at
    the time of assessment,” Minn. Stat. § 272.03, subd. 8 (2014). “Appraisers must perform
    a highest and best use analysis when appraising commercial real estate.” Berry & Co. v.
    Cty. of Hennepin, 
    806 N.W.2d 31
    , 34 (Minn. 2011). Thus, the market value of property
    requires consideration of the property’s highest and best use. Cty. of Aitkin v. Blandin
    Paper Co., 
    883 N.W.2d 803
    , 810 (Minn. 2016); see also Appraisal Institute, The Appraisal
    of Real Estate 332 (14th ed. 2013) (explaining that a property’s highest and best use is
    “[t]he reasonably probable use of property that results in the highest value”). The highest
    6
    and best use of a property is the one that is physically possible, legally permissible,
    financially feasible, and maximally productive. Cty. of 
    Aitkin, 883 N.W.2d at 810
    .
    Highest and best use analysis can be approached in two ways. The first assumes
    that the property is vacant or can be made vacant by demolishing present improvements.
    Appraisal 
    Institute, supra, at 336
    ; see also Ferche Acquisitions, Inc. v. Cty. of Benton, 
    550 N.W.2d 631
    , 634 (Minn. 1996) (explaining that highest and best use can consider “whether
    it would be best to sell [the property] vacant on the open market”). The second, “as-
    improved,” focuses on the use of the property that should be made with its current
    improvements. Appraisal 
    Institute, supra, at 336
    . As-improved analysis is narrower,
    focusing on whether to retain, modify, or demolish existing improvements. 
    Id. Both experts
    provided opinions on the highest and best use of Menard’s property
    “as-vacant” and “as-improved.”2 MaRous found that the highest and best use of the
    property as-improved was continued use as a single-tenant retail building with Menard as
    its occupant-owner. But if Menard were to vacate the property, MaRous concluded that it
    was “highly likely the building would remain vacant.” In other words, continued use as a
    big-box retail store was not viable for the property if Menard left. In reaching this
    conclusion, MaRous considered national economic conditions and trends, particularly
    regarding big-box retailers. These considerations include a nationwide oversupply of big-
    box properties; the impact of the 2008 recession on big-box retailers; a trend away from
    big-box retail, in part because of an increase in online retailing; and the superior “overall
    2
    Menard appealed only the tax court’s as-improved determination. We do not
    consider whether the tax court’s as-vacant determination was clearly erroneous.
    7
    population and income demographics” in the Fargo, North Dakota market as compared to
    the Moorhead, Minnesota market.
    Vergin found that, as-improved, the property and its improvements were suited to
    its current use as a big-box retail store. Vergin relied on evidence that showed no excess
    supply of vacant big-box stores in the local market and evidence that the 2008 recession
    impacted that market less than many other communities.
    The tax court found that, for all valuation dates, the property’s highest and best use
    as-improved was continued use as a big-box retail store. The tax court rejected MaRous’s
    analysis because of its “general and abstract character,” noting that he “never descended to
    [the required level] of particularity in concluding that the property was not a viable big box
    retail store.” The tax court also rejected MaRous’s conclusions regarding the impact of the
    2008 recession on big-box stores in the Fargo/Moorhead area because MaRous recognized
    that the “magnitude and duration of the downturn depended a great deal on a number of
    factors including location [and] local demographics,” a high growth rate, and a low
    unemployment rate. The record also included evidence that “home improvement stores are
    not as vulnerable to online sales” as other large retailers, and some big-box retailers are
    moving toward even larger facilities rather than downsizing.
    Taking all these factors into consideration, the tax court found:
    1. “Fargo/Moorhead had an unusually strong and stable economy . . . and the area was
    experiencing steady population and wage growth,”
    2. “Moorhead’s development of an eastward growth ring was proceeding much more
    quickly than anticipated,”
    3. “[t]here was at most one vacant big box store[] in the entire Fargo/Moorhead area,”
    and
    8
    4. “the subject property was a recently-constructed typical big-box store with both
    good visibility and recently augmented access from Interstate 94.”
    The record supports the tax court’s findings. First, the tax court relied on population
    demographics, high growth, and a low unemployment rate in the Fargo/Moorhead area.
    Second, the tax court deemed Menard’s Moorhead-specific analysis unpersuasive because
    it was based on national data that did not apply specifically to the property. The tax court
    acknowledged that Menard’s retail sales at the property were less than those at its nearby
    store in North Dakota, but it noted that many big-box retailers have several locations, and
    even those big-box retailers located on the more prosperous side of the local market may
    still choose to build another store in the area. The tax court’s determination—that the
    highest and best use of Menard’s property was as a big-box retail store—was well
    supported by the record.
    The County argues that once the tax court rejected MaRous’s opinion on the highest
    and best use of the property, the tax court should have rejected MaRous’s opinions entirely
    as unreliable. We disagree. “[T]he tax court typically determines the weight and credibility
    of . . . testimony, including that of the expert witnesses.” Beck v. Cty. of Todd, 
    824 N.W.2d 636
    , 639 (Minn. 2013) (citation omitted) (internal quotation marks omitted). The tax court
    is free to “accept all or only part of any witness’ testimony.” City of Minnetonka v. Carlson,
    
    298 N.W.2d 763
    , 767 (Minn. 1980). MaRous offered evidence and opinions on many
    elements relevant to the proper valuation of the property. Although the tax court found
    that MaRous’s highest and best use determination was unreliable, it did not find that his
    entire report was unreliable. Given our deferential review of credibility determinations,
    9
    Eden Prairie Mall, LLC v. Cty. of Hennepin, 
    830 N.W.2d 16
    , 21 (Minn. 2013), we conclude
    that the tax court acted well within its broad discretion in relying on portions of MaRous’s
    appraisal report and testimony.
    III.
    Next, we review the parties’ objections to the tax court’s calculations under the cost
    approach. We recognize three approaches for determining the market value of real estate:
    the sales comparison approach; the income capitalization approach; and the cost approach.
    See Equitable Life Assurance Soc’y of U.S. v. Cty. Of Ramsey, 
    530 N.W.2d 544
    , 552 (Minn.
    1995).3 The cost approach assumes that “an informed buyer would pay no more for the
    property than the cost of constructing new property having the same utility.” 
    Id. “Under [this]
    approach, the appraiser determines the current cost of constructing the
    existing improvements on the property, subtracts depreciation to determine the current
    value of the improvements, and then adds the value of the land to determine the market
    value.” Cont’l Retail LLC v. Cty. of Hennepin, 
    801 N.W.2d 395
    , 403 (Minn. 2011). This
    approach “is useful for estimating the market value of new or relatively new construction
    . . . and . . . is best applied when land value is well supported and the improvements are
    new or suffer only minor depreciation.” Guardian Energy, LLC v. Cty. of Waseca, 
    868 N.W.2d 253
    , 262 (Minn. 2015).
    3
    The parties’ appraisers used an income capitalization approach, although MaRous
    ultimately relied on the sales comparison approach. The County does not challenge the tax
    court’s decision that it had “no reliable market value indication under the income
    capitalization approach.”
    10
    The tax court first determined a value for the property site by considering
    comparable sales transactions, then adjusted the resulting value figure for the cost of
    improvements and a 10-percent entrepreneurial incentive, and finally adjusted for
    depreciation, including functional and external obsolescence. Menard challenges three
    elements of the tax court’s analysis: (1) adjusting for a 10-percent entrepreneurial
    incentive, (2) rejecting MaRous’s market extraction theory for calculating total
    depreciation, and (3) refusing to adjust for external obsolescence. The County raises one
    issue related to the tax court’s cost analysis: error in excluding indirect soft costs when
    adjusting for improvements. We address each issue in turn.
    A.
    We begin with the tax court’s adjustment to the site value using a 10-percent
    entrepreneurial incentive. Entrepreneurial incentive is “[t]he amount an entrepreneur
    expects to receive for his or her contribution to a project. . . . [I]t is the expectation of
    future profit as opposed to the profit actually earned on development or improvement.”
    Appraisal 
    Institute, supra, at 573
    . Entrepreneurial profit is a “market derived figure that
    represents the amount an entrepreneur receives for his or her contribution to a project and
    risk; the difference between the total cost of a property . . . and its market value.” 
    Id. Menard asserts
    that adjustment for an entrepreneurial incentive was improper
    because the property is owner-occupied rather than for sale or other use. But this factor is
    not determinative. See, e.g., Nw. Racquet Swim & Health Clubs, Inc. v. Cty. of Dakota,
    
    557 N.W.2d 582
    , 585 (Minn. 1997) (explaining adjustments made to land value for
    operating a health club, including “a five percent entrepreneurial profit”).            “Some
    11
    appraisers . . . observe that entrepreneurial profit often represents a theoretical profit in
    build-to-suit, owner-occupied properties.          The owner-occupant may consider any
    additional operating profit due to the property’s efficient design to be an incentive.”
    Appraisal 
    Institute, supra, at 575
    . This profit “might only be realized years after the
    property is built when it sells to a similar owner-occupant at a premium because the
    property is suitable and immediately available, unlike new construction or conversion of a
    different property.” 
    Id. MaRous did
    not include an entrepreneurial incentive in his calculations, noting that
    “[i]n the subject’s case, and like virtually all big box retail stores, consideration for
    entrepreneurial profit is not applicable.” Vergin, on the other hand, included a 10-percent
    entrepreneurial incentive in his cost approach calculations, explaining that he added that
    sum because it “is compensation to the entrepreneur for . . . going at risk to build the asset.”
    The tax court agreed with Vergin, relying on the principle that “any building project
    will include an economic reward (above and beyond direct and indirect costs) sufficient to
    convince an entrepreneur to take on the risk associated with that project in that market.”
    See Appraisal 
    Institute, supra, at 573
    . Although we may have come to a different
    conclusion had we been the initial fact-finder, the tax court’s decision has support in the
    record, and we are not left with a definite and firm conviction that an error was committed.
    B.
    We next address the County’s assertion that the tax court failed to account for all
    indirect soft costs in its adjustments to property value. Soft costs are those costs “generally
    12
    related to the size and cost of the project,” including indirect soft costs such as
    “architectural fees and property taxes.” Appraisal 
    Institute, supra, at 572
    .
    The parties’ experts compared Menard’s actual 2007 costs—when the buildings
    were constructed and the land was improved—with the estimated costs provided by a
    valuation service, Marshall & Swift Valuation Service (Marshall & Swift). The tax court
    found errors in Vergin’s calculations, noted that MaRous’s adjustments to actual site-
    improvement costs were “unchallenged by the County,” and based on the evidence in the
    record, preferred MaRous’s cost calculations. The County asserts that this decision is
    erroneous because MaRous admitted that he did not know what the soft costs were for the
    2007 project, and Menard’s cost statement did not identify any soft costs.
    Although the tax court acknowledged that MaRous’s actual cost figures did not
    include soft costs, it nonetheless found that those estimates were “reasonably close” to the
    adjusted Marshall & Swift estimate. On the other hand, the tax court found that Vergin’s
    cost calculations were incorrect and “not sufficiently justified to warrant reliance.”
    Further, Vergin’s estimated costs based on the Marshall & Swift information were
    “substantially above the indexed actual cost.”
    These findings have ample support in the record. Given the tax court’s explanation
    for accepting MaRous’s cost adjustments and rejecting Vergin’s, we conclude that the tax
    court’s adjustments for soft costs were well supported by record evidence.
    C.
    We now turn to Menard’s challenges to the tax court’s deductions for depreciation.
    Depreciation represents “losses in the value of improvements due to the effects of age,
    13
    wear and tear, and other causes.” Appraisal 
    Institute, supra, at 576
    . Three major causes
    of depreciation exist: physical deterioration, functional obsolescence, and external
    obsolescence, all of which can operate separately or in combination. Id.; see also Guardian
    
    Energy, 868 N.W.2d at 262
    (describing the “three forms of depreciation under the cost
    approach”). Menard contends that the tax court erred in its depreciation adjustments by
    rejecting the market-extraction method that MaRous used to calculate functional
    obsolescence and by concluding that the property suffered no external obsolescence.
    We begin with Menard’s argument regarding the market-extraction method used to
    calculate depreciation.4   The market-extraction method “relies on the availability of
    comparable sales from which depreciation can be extracted,” but it is used only when “the
    quality of th[e] data is adequate to permit meaningful analysis.” Appraisal 
    Institute, supra, at 605
    . This “method is difficult to apply when the type or extent of depreciation varies
    greatly among the comparable properties due to characteristics other than age.” 
    Id. at 610.
    Relying on data drawn from 27 separate sales transactions, MaRous used the
    market-extraction method to “test the reasonableness of [his] total depreciation estimate,”
    which was 79 percent or 80 percent for each year. The tax court identified several concerns
    with MaRous’s comparable transactions. First, most of the primary comparables—a group
    of seven in-state transactions—were not comparable in age. Second, comparables similar
    4
    Total depreciation can be calculated using any of the following, either individually
    or in combination: the market-extraction method, the economic age-life method, or the
    breakdown method. Appraisal 
    Institute, supra, at 597
    . Menard’s expert used a “modified”
    economic age-life method and a market-extraction method for estimating total
    depreciation. Only the market-extraction method is at issue on appeal.
    14
    in age were closed for “insufficient sales,” suggesting that the “depreciation at these stores
    may well be attributable to external obsolescence not shared by the subject property.”
    Finally, two of the older stores that were sold had been replaced by newer stores, suggesting
    that any depreciation was attributable to factors not shared by the Menard’s store. Thus,
    the tax court concluded that “MaRous’s application of market extraction to the primary set
    was inappropriate, and his results unreliable.”
    Menard argues that the tax court improperly speculated about the accuracy of
    MaRous’s depreciation analysis and erroneously substituted its own view of comparability.
    See Guardian 
    Energy, 868 N.W.2d at 266
    (noting that the tax court cannot “substitute its
    own measure of external obsolescence that is without support in the record”). In Guardian
    Energy, the tax court calculated external obsolescence “with virtually no record support or
    explanation” after rejecting a factor “that both parties’ appraisers found to be the primary
    consideration.” 
    Id. In contrast,
    the tax court’s decision here was based on identified
    concerns with the lack of comparability in the transactions relied on, and inconsistencies
    between, Menard’s “occupancy-only” theory of big-box retailers and the offered
    comparables. After considering these issues, the tax court concluded that MaRous’s
    “implementation” of the market-extraction method did not provide reliable results.
    Based on the entire record, we conclude that the tax court’s decision to reject
    MaRous’s market-extraction analysis was supported by the record.
    D.
    Menard also challenges the tax court’s finding that Menard’s Moorhead store
    suffered no external obsolescence on any of the valuation dates. External, or economic,
    15
    obsolescence “is the measurement of a property’s loss in value as a result of factors beyond
    the physical boundaries of the property and beyond the owner’s control.” Guardian
    
    Energy, 868 N.W.2d at 262
    -63; see also In re McCannel, 
    301 N.W.2d 910
    , 924 n.10 (Minn.
    1980) (defining economic obsolescence as an “impairment of desirability or useful life
    arising from factors external to the property”).
    MaRous estimated external obsolescence at 10 percent, relying on “the on-going
    recession and . . . its adverse and significant impact on all segments of the real estate
    market.” Menard also presented evidence regarding the inferiority of the Moorhead area
    on the Minnesota side of the river, as compared with the Fargo area on the North Dakota
    side, in terms of “population and income market demographics,” as well as a “glut of vacant
    big-box retail stores.” The tax court found that the property suffered from no external
    obsolescence and noted that Menard’s 10-percent estimate was “based exclusively on
    broad generalizations and on national rather than local data” and the specific property.
    Menard failed to present any evidence showing that online sales have affected
    lumber and home improvement stores and that nationwide economic trends produced
    external obsolescence in Moorhead.5 Menard also failed to address evidence showing that
    some big-box retailers are building even larger big-box stores. In addition, Peter Doll, a
    witness for the County who values property for tax purposes and is involved in economic
    development, testified to the strong market for large retail stores in the Moorhead market.
    5
    Specifically, during the valuation period the Fargo/Moorhead area had an unusually
    strong and stable economy compared with many other communities; the area was
    experiencing steady population and wage growth; and there was, at most, one vacant big-
    box store in the Fargo/Moorhead area.
    16
    On this record, the tax court’s finding that the subject property suffered no external
    obsolescence was not clearly erroneous. See Nw. Racquet Swim & Health 
    Clubs, 557 N.W.2d at 588
    (finding a tax court’s decision on economic obsolescence that had
    “evidentiary support” and was “not unreasonable” was not clearly erroneous).
    In conclusion, the tax court’s calculations under the cost approach were supported
    by the record. Therefore, we affirm the tax court’s cost approach calculations.
    IV.
    We next consider the County’s challenges to the tax court’s calculations in its sales
    comparison approach. The sales comparison approach involves valuing property “based
    on the price paid in actual market transactions of comparable properties, and then [making]
    an adjustment to those sales prices . . . to reflect differences between the sold property and
    the subject property.” Cont’l Retail LLC v. Cty. of Hennepin, 
    801 N.W.2d 395
    , 402 (Minn.
    2011); see Carson Pirie Scott & Co. (Ridgedale) v. Cty. of Hennepin, 
    576 N.W.2d 445
    ,
    447 (Minn. 1998) (explaining that adjustments are made “for differences such as location,
    size and time of sale” after comparing the subject property with comparable sales). “A
    major premise of the sales comparison approach is that an opinion of the market value of
    a property can be supported by studying the market’s reaction to comparable and
    competitive properties.” Cont’l 
    Retail, 801 N.W.2d at 402
    (quoting Appraisal Institute,
    The Appraisal of Real estate 297 (13th ed. 2008)). A tax court does not err by rejecting a
    valuation under the sales comparison approach where noncomparable sales are used. KCP
    Hastings LLC v. Cty. of Dakota, 
    868 N.W.2d 268
    , 274 (Minn. 2015).
    17
    The County raises two challenges to the tax court’s sales comparison analysis. First,
    the County argues that the tax court improperly rejected several of its comparable sales
    simply because those transactions were not also considered by Menard’s expert, MaRous.
    Second, the County objected to the tax court’s adjustment to exclude post-sale costs
    incurred in the transaction for Lowe’s-Cambridge.
    The County’s expert, Vergin, considered eleven comparable transactions, using a
    gross building area of 236,429 square feet, which included the main building, the
    mezzanine space, the covered and unheated space, and the detached open-air shed.
    MaRous considered seven transactions using a gross building area of 162,340 square feet,
    which comprised the main building’s enclosed, heated space and excluded the mezzanine
    and covered, unheated space.
    The tax court, using MaRous’s gross building area of 162,340 square feet, agreed
    with MaRous that the main building’s covered and unheated space and the detached open-
    air shed “would likely have ‘very little contributory impact on value’ ” and that “the
    ‘[m]ore appropriate treatment of this space may be achieved by . . . applying an upward
    adjustment’ for the excluded spaces.” The tax court noted that “Vergin agreed that [the]
    market would not attach any value” to the mezzanine space.
    The tax court also noted that the property was unique, and “[a] significant factor in
    the selection of sales comparables . . . is the main building’s . . . covered/unheated space,
    and the property’s . . . detached open-air shed.” With this standard in mind, the tax court
    identified four comparable sales transactions the appraisers had in common. Three of those
    common sales had similar covered and unheated space, were relatively close in gross
    18
    building area (excluding covered and unheated space), and had sale dates in late 2012—
    close to the center of the four valuation dates. Given these similarities to the property, the
    tax court used these three transactions as comparable sales transactions.
    The County argues that the tax court should have included three of its offered
    transactions because they are “very comparable” and require “the least amount of
    adjustment.” We will not disturb the tax court’s decision to rely on some, but not all,
    offered comparables. See KCP 
    Hastings, 868 N.W.2d at 273-74
    . The tax court explained
    its reasons for including the comparables that it used, and in particular, noted that the
    similarities between the three chosen comparables and the subject property “reduce the
    need for adjustment.” Given this explanation and reasoning, we find the tax court’s
    explanation was adequate and its decision was supported by the record.
    The County argues that the tax court should have excluded the Lowe’s-Rogers sale
    (comparable No. 5), even though the County relied on this transaction, because the sale
    “had severe use restrictions in place.” Based on a limited-use restriction in the warranty
    deed for comparable No. 5, the tax court adopted a 15-percent adjustment for each
    valuation date, finding that a use restriction “imposes a genuine constraint on the . . .
    property for seven years.” The County contends that the use restriction adjustment Vergin
    proposed—75 percent—had more support in the record than the 5-percent adjustment that
    MaRous proposed. The tax court considered both experts’ testimony and evidence,
    rejected Vergin’s speculation about the effect of the use restriction for comparable No. 5,
    and determined that a 15-percent adjustment adequately reflected the constraint imposed
    by the restriction, which was “limited in both scope and duration.” We do not disturb the
    19
    tax court’s determinations on comparable transactions, particularly when credibility
    determinations are at issue, see Archway Mktg. Servs. v. Cty. of Hennepin, 
    882 N.W.2d 890
    , 896 (Minn. 2016), and we do not do so here.
    We next consider the County’s objection to the tax court’s exclusion of post-sale
    costs incurred in the transaction for Lowe’s-Cambridge. Post-sale costs, such as costs to
    “demolish and remove a portion of the improvements,” can be added to the sales price of
    a comparable property if the buyer and the seller have anticipated such costs. Appraisal
    
    Institute, supra, at 412-13
    . In the Lowe’s-Cambridge transaction, the Lowe’s property was
    purchased by Mills Fleet Farm, which then incurred expenses to remove Lowe’s trade-
    dress improvements from the property.
    No evidence in the record shows, however, that Lowe’s anticipated the $2.8 million
    that Mills Fleet Farm spent to remove Lowe’s trade dress and to construct its own. Here,
    Vergin was questioned at length during the trial as to whether Lowe’s knew of the $2.8
    million that Mills would have to spend. After a lengthy exchange, the appraiser agreed
    that “[Lowe’s] may not have known what was going to be spent by . . . Mills.” Because
    evidence of actual assumptions made by Lowe’s regarding post-sale costs is not in the
    record, the tax court did not clearly err by declining to consider those costs as part of its
    calculations under the sales comparison approach.6
    6
    The tax court characterized post-sale costs as functional obsolescence under the cost
    approach. Functional obsolescence is the “inadequacy or obsolescence of a facility due to
    developments which have made it incompetent to perform its function properly or
    economically, . . . or the inability of a structure to perform adequately the function for
    which it is currently employed.” In re McCannel, 
    301 N.W.2d 910
    , 924 n.9 (Minn. 1980).
    “[E]xpensive trade dress [that is] so important to [one big-box retailer] represents
    20
    V.
    Finally, we consider the objection by Menard to the tax court’s weighting of the cost
    approach and the sales comparison approach. The tax court weighted the cost approach at
    60 percent and the sales approach at 40 percent for the first two years. It did so after
    concluding that it had “no reliable market value” information for the income capitalization
    approach, the “cost approach is well supported and . . . appropriately used,” and the “sales
    comparison approach likewise produces reliable indications of market value.” For the final
    two years, the tax court gave the two approaches equal weight. This “math,” Menard
    contends, “divorces market value” from its intended objective, identifying the price that a
    purchaser would be willing to pay for the property.
    All real property is assessed based on market value, that is, the price at which
    property could be sold at a private sale. Minn. Stat. §§ 273.11, subd. 1, 272.03, subd. 8
    (2014). We have said that the “sale value [of property], not the actual value, is what must
    control” any determination of market value. State v. Russell-Miller Milling Co., 
    182 Minn. 543
    , 544, 
    235 N.W. 22
    , 22 (1931). The tax court need not, however, “accept any particular
    valuation approach as the sole basis for determining market value.” DeZurik Corp. v. Cty.
    of Stearns, 
    518 N.W.2d 14
    , 16 (Minn. 1994). Whenever possible, the tax court should
    functional obsolescence when the property is put on the open market.” David Charles
    Lennhoff, Valuation of Big-Box Retail for Assessment Purposes: Right Answer to the
    Wrong Question, 39 Real Estate Issues, no. 1, 2014, at 21, 25. Because these post-sale
    improvements (removal of expensive trade dress) fit within the definition of functional
    obsolescence, the tax court did not clearly err when it considered these post-sale
    improvements as a form of depreciation under the cost approach and applied a similar
    deduction to the Menard property.
    21
    employ at least two methods to determine the market value of a property because the
    different methods can serve as checks on each other. Am. Express Fin. Advisors v. Cty. of
    Carver, 
    573 N.W.2d 651
    , 657 (Minn. 1998). In a given valuation determination, more than
    one approach to value is usually appropriate and necessary. See Appraisal 
    Institute, supra, at 77
    ; Equitable Life Assurance Soc’y of U.S. v. Cty. of Ramsey, 
    530 N.W.2d 544
    , 553-54
    (Minn. 1995). We “accord the tax court broad discretion in choosing which valuation
    approach to use.” Evans v. Cty. of Hennepin, 
    548 N.W.2d 277
    , 278 (Minn. 1996). Further,
    we have recognized that “the weight given to each approach depends on the quantity and
    quality of available data.” KCP Hastings LLC v. Cty. of Dakota, 
    868 N.W.2d 268
    , 275
    (Minn. 2015) (citation omitted) (internal quotation marks omitted).
    Menard contends that the tax court’s job was done once it determined that the sales
    comparison approach provided a reliable indicator of market value. The sales comparison
    approach “must be given the full weight it legally deserves” according to Menard. If by
    this declaration Menard insists that the tax court erred by failing to rely on the sales
    comparison approach alone, we have already rejected this argument. We have said that
    “appraisal is an inexact value determination” and an “estimate of value.” Lewis & Harris
    v. Cty. of Hennepin, 
    516 N.W.2d 177
    , 180 (Minn. 1994).
    Thus, we have allowed the tax court to determine market value by considering more
    than one approach. See 
    id. (“Viewing value
    from three different perspectives may help the
    appraiser arrive at an estimate closer to actual market value than if the property were
    viewed from a single perspective.”); see also Am. Express Fin. 
    Advisors, 573 N.W.2d at 657
    (“We have stated that whenever possible, the court should apply at least two
    22
    approaches to market value because the alternative value indications derived can serve as
    useful checks on each other.”).
    Menard further asserts that the tax court erred in its decision by giving the cost
    approach and the sales comparison approach varying weights when determining market
    value and by failing to explain its reasoning. We disagree.
    “The respective weight placed upon each of the three traditional approaches to
    value depends on the reliability of the data and the nature of the property being valued.”
    Harold Chevrolet v. Cty. of Hennepin, 
    526 N.W.2d 54
    , 59 (Minn. 1995). “No mechanical
    formula is used to select one [valuation approach] over the others. The strengths and
    weaknesses of each approach used must be discussed, and the appraiser must explain why
    one approach may be relied upon more than another . . . .” Appraisal 
    Institute, supra, at 642
    . Indeed, we have allowed “overriding weight” to be given to one approach when
    weaknesses in the other two approaches are identified. Montgomery Ward & Co. v. Cty.
    of Hennepin, 
    482 N.W.2d 785
    , 791 (Minn. 1992).
    To be sure, the tax court must provide adequate reasoning for its valuation
    determinations. Archway Mktg. Servs. v. Cty. of Hennepin, 
    882 N.W.2d 890
    , 897 (Minn.
    2016) (finding that the tax court’s unexplained rejection of several sales comparables
    required remand). But we have accepted even abbreviated explanations of the tax court’s
    reasoning. See Kohl’s Dep’t Stores Inc. v. Cty. of Washington, 
    834 N.W.2d 731
    , 734-35
    (Minn. 2013).
    In its final reconciliation, the tax court found that “the cost approach [was] well
    supported and [was] appropriately used give[n] the recent vintage of the subject property’s
    23
    improvements.” The tax court also found that the sales comparison approach “produces
    reliable indications of market value.” The tax court determined that, for the 2011 and 2012
    valuation dates, it was appropriate to give the cost approach 60-percent weight and the
    sales comparison approach 40-percent weight because “the subject property’s
    improvements were only four years old on the first valuation date.” The tax court gave the
    sales comparison approach and the cost approach equal weighting (50 percent each) for the
    2013 and 2014 valuation dates.
    The tax court provided a reasonable explanation of the circumstances that justified
    the use of the cost approach. First, the tax court found that because the property was
    “relatively new construction,” substantial reliance on the cost approach was proper. See
    Guardian Energy LLC v. Cty. of Waseca, 
    868 N.W.2d 253
    , 262 (Minn. 2015). Second, the
    tax court noted that there was “no reliable market value indication under the income
    capitalization approach,” so its reliance on the cost approach and the sales comparison
    approach “became relatively more important.” See Equitable Life Assur. 
    Soc’y, 530 N.W.2d at 553
    .
    Third, the tax court reiterated that it had “substantial misgivings about the
    comparable sales in this case,” and this concern with Menard’s comparable sales affected
    the tax court’s “confidence in, and final weighting of, the sales comparison approach.”
    Specifically, the tax court stated that “Menard’s occupancy-only theory necessarily
    suggests that sales of big box retail stores are extraordinary events that must be carefully
    analyzed for comparability,” but the parties did not include “any trade-area analysis for
    any of the proffered comparable sales.” This failure left the tax court “with no objective
    24
    basis for evaluating the true comparability of the subject property to the proffered
    comparables with respect to a critical factor . . . the quality of [the] retail location.” Based
    on its reservations, the tax court concluded that “the sales comparison approach . . . was
    not entitled to controlling weight.” The tax court found in its amended order that this
    “judgment was well within [its] discretion.”
    We agree. “[T]he weight placed on each approach depends on the facts of each
    case,” Cont’l Retail LLC v. Cty. of Hennepin, 
    801 N.W.2d 395
    , 402 (Minn. 2011), and the
    calculation of a property’s valuation is best approached by using at least two of the three
    valuation methods, see Am. Express Fin. 
    Advisors, 573 N.W.2d at 657
    ; Equitable Life
    Assurance 
    Soc’y, 530 N.W.2d at 553
    -54. We have also stated that property valuation is an
    inexact science and that it is for the tax court to determine the weight that it will assign to
    each approach. See Cont’l 
    Retail, 801 N.W.2d at 399
    ; Harold 
    Chevrolet, 526 N.W.2d at 59
    ; Lewis & 
    Harris, 516 N.W.2d at 180
    . In arguing for a theory of valuation that limits
    the assessed value to the price paid in the last comparable sales transaction, Menard ignores
    these well-established principles. Not surprisingly, none of our decisions support this
    narrow view of the inexact science of real property appraisal.
    In sum, the tax court properly exercised its broad discretion in weighting the sales
    comparison approach and the cost approach for the four valuation years at issue. Moreover,
    the tax court adequately explained its reasoning for that decision.
    Affirmed.
    STRAS, J., took no part in the consideration or decision of this case.
    25