¶ 1 This matter is before us to review an order of the Utah State Tax Commission (“the Commission”) fixing the assessed value on residential property owned by Jeff and Victoria Schmidt and to review the Commission’s denial of a request from the Salt Lake County Board of Equalization (“the Board”) for reconsideration. Both the Schmidts and the Board challenge the Commission’s valuation. The Schmidts argue that their property should be valued at zero due to contamination. The Board argues that the property’s value should be higher than that fixed by the Commission. We conclude that nеither the Schmidts nor the Board met their burden of showing that the Commission’s valuation was not based on substantial evidence, and therefore, we affirm.
¶2 The property at issue is residential property located on East Little Cottonwood Road in Sandy, Utah (“the property”). The property consists of a home of approximately 7000 square feet located on 2.7 acres. The property is located at the mouth of Little Cottonwood Canyon near the site where a smelter operated briefly in the early 1870’s, refining ore from the mines in the cаnyon. Tailings from the mill are present on at least some of the land in varying quantities. The Board valued the property at $789,370 for the 1995 tax year. The Schmidts then appealed to the Board to adjust its original valuation and notified the Board of the contamination on the property. An independent *691 hearing officer for the Board reduced the value of- the property to $706,000. The Schmidts then appealed to the Commission.
¶ 3 The Commission held a formal hearing. The Schmidts' argued that because the property was contaminated with high levels of lead and arsenic, the market value should be reduced to zero. In support of their motion, the Schmidts offered letters from the Utah Department of Environmental Quality (“UDEQ”) and the United States Environmental Protection Agency (“EPA”). The UDEQ letter states that the three trial holes on the 2.7 aсres show that the land contains lead and arsenic at levels well above those UDEQ deems warrant clean-ups or the putting in place of environmental controls. The Schmidts also offered as evidence a letter containing a bid from Sitex Environmental, Inc. -(“Sitex”), indicаting that the removal of eighteen inches of topsoil from the entire 2.7 acres, disposal of the contaminated soil, and replacement with clean soil would cost $1,042,252.05. The Schmidts submitted an appraisal that valued the property at negative $334,000, a figure reached by deducting the amount of the Sitex bid from the value that the Board had fixed for the property. Finally, the Schmidts relied on letters from several banks that had denied permanent financing for the property after the contamination was discovered.
¶ 4 In opposition to the evidence proffered by the Schmidts, the Board submitted several pieces of evidence including an appraisal from Lisa Martin, an appraiser for the Salt Lake County Assessor’s office. Martin determined that the value of the land should be calculated by using the $706,000 figure and rеducing it by 20 percent due to stigma from the contamination. A 20 percent reduction for stigma is a standard appraisal technique. She valued the property at $563,900. The Board also disputed that it was necessary to remove as much soil as the Sitex bid suggested. It argued that because only three soil samples had been taken on the entire 2.7 acres,'there was insufficient evidence to prove that the entire property was contaminated. Furthermore, the Board pointed out that -there was no evidence that the EPA or UDEQ would require аny sort of a clean-up on this residential property. Finally, the Board offered evidence that the problem had been partially cured when the Schmidts placed additional topsoil on portions of the 2.7 acres. -
¶ 5 In its findings of fact, conclusions of law, and-final deсision, the Commission found that the fair market value of the land was zero but that the fair market value of the home was $398,166. It explained this result in the following manner. While “[t]he normal method of calculating the value of a contaminated property, is to deduct the costs of remediation from the value of the property as calculated before any deduction for contamination ... in this case, it would result in a negative value.... If a property had a negative value, that would also imply that the property was uninhabitable.” Because рetitioners and their small children live in the home, and “in very nice circumstances,” the Commission reasoned that the property must have some positive value. The normal valuation methodology was not used because it produced a number that did not reflect reality. Since the Commission determined that the property had “value-in-use,” 1 it came up with an alternative methodology. The Commission treated the land and the home separately. It did this because the building itself was not contaminated and the harm to the value of the overall prоperty was due to the contamination in the soil. It therefore set the value of the land at zero and the value of the building át $398,166, a figure reached by using the standard replacement cost new less depreciation method. The result was a valuation for the house and land of $398,166.
¶ 6 The issue before this court is whether the Commission committed reversible error in fixing the property’s value at $398,166. We first address the standard of review. We have held that the choice of valuation methodology used in fixing the value of a property is a question of fact.
See Beaver County v.
*692
Utah State Tax Comm’n,
¶ 7 Under this standard, we uphold the Commission’s findings of fact if they are “ ‘supported by
substantial evidence based upon the record as a whole.’ ” Cache County v. Property Tax Div. of Utah State Tax Comm’n,
¶8 Both the Schmidts and the Board challenge the Commission’s factual findings. The Schmidts argue that the Commission erred in valuing the home and the land separately. The Board argues that the Commission erred in fixing the land’s value at zero and argues that the Commission should have used the Board’s valuation for the house and land, malting a percentage reduction for stigma instead.
¶ 9 The Commission was not bound to accept either the Schmidts’ or the Board’s valuations; it “ha[s] the discretion to adopt a figure that [falls] somewhere between ... polarized estimates.”
Utah Ass’n of Counties,
¶ 10 The Commission stated that the “normal method” of calculating the value of contaminated property is to deduct the costs of remediation from the valuе of the property as calculated before any deduction for the contamination. However, the Commission decided not to apply the “normal method.” Instead, it attempted to fix the value of the property in use. This court has never established a proper method for fixing the value of contaminated property. Other jurisdictions have. Some have applied a method similar to the Commission’s “normal method.”
See, e.g., Almor Corp. v. County of Hennepin,
¶ 11 Here, the Commission made a judgment about the value-in-usе of the home and the land. The evidence before it valued the property between $706,000 and zero. The Commission has the discretion to take that conflicting evidence into account and to arrive at a number in between.
See Utah Ass’n of Counties,
¶ 12 In conclusion, we affirm the Commission’s valuation of the property at $398,-166.
Notes
. “Value-in-use” was defined by the Iowa Supreme Court in
Boekeloo v. Board of Review of Clinton,
. Section 59-2-103 states:
(1) All tangible taxable property shall be assessed and taxed at a uniform and equal rate on the basis of its fair market value, as valued on January 1, unless otherwisе provided by law.
. Section 59-2-102(8) is now codified at section 59-2-102(9). The change to section 59-2-102 occurred in 1998 and does not affect this case.
. The Board also argues that the Commission erred as a matter of law in reducing the value of the land to zero. It contends that the Commissiоn should only reduce the value of property by the cost of a clean-up where the taxpayer has shown all the following: the land is contaminated, the taxpayer is required to clean up the land, and the taxpayer can show with reasonable certainty thе cost of a clean-up. The Board relies on a Washington case,
Weyerhaeuser Co. v. Easter,
