Property Valuation Appeals in Salt Lake County, Utah
For 2026, Salt Lake County lists September 15 as its general ordinary filing date. Its published late guidelines describe a conditional application through March 31, 2027 under listed circumstances and after Board acceptance. Its Tax Administration page also describes a notice-relative 45-day ordinary deadline; an owner with a later-mailed notice should confirm the property's filing status with the County Auditor because the 2026 late guidelines broadly describe submissions after September 15 as late. FairPath's owner-guided evidence review path is available, but source depth and packet contents depend on the property and the owner's reviewed information. The homeowner decides whether to file and files through the county; FairPath does not represent the owner or predict an outcome.
Assessment context: The Salt Lake County Assessor estimates market value for ad valorem taxation, using computer-assisted mass appraisal for most residences. The Board of Equalization reviews the current year's total market value, not the tax rate or taxes due. An owner cannot ask the Board to change only the land component or only the improvement component. Review the notice and Assessor record as a whole, including parcel identity, land, building area, age, quality, condition, additions, use, and prior sale information. A higher tax bill may reflect budgets and rates as well as value, so the evidence packet should identify a valuation error rather than treating the bill itself as proof.
Filing process: The County Auditor publishes an online late-appeal path and a March 31, 2027 outer date for 2026 applications that meet its late guidelines. An application the county treats as late requires appeal information, supporting evidence, and a letter explaining the late filing; the Board must accept it before reviewing value. The Tax Administration page also describes an ordinary deadline 45 days after notice mailing or September 15, whichever is longer, so a later-mailed notice requires county confirmation of its filing status. The Board reviews total current-year market value, not the tax rate or amount due. The homeowner files with the county and retains submission proof.
Evidence to review: Focus on total market value for the current year. Verify the Assessor record for living area, lot, age, quality, condition, basement, garage, additions, renovations, use, and location. Select recent arm's-length sales from the relevant Salt Lake County market and document parcel number, address, sale date and price, size, age, style, condition, and material adjustments. Add dated photographs, inspections, contractor estimates, repair scopes, permits, surveys, appraisals, and owner records when they establish conditions existing on the valuation date. Explain the owner's opinion of value and connect every exhibit to it. A listing price, tax amount, unsupported estimate, or sale from a materially different neighborhood should not stand alone. If the subject recently sold, document whether the transaction was arm's length and whether its timing reflects the valuation date. If physical defects drive the claim, show when they existed and how they affect market value instead of presenting repair cost as an automatic dollar-for-dollar reduction. Keep a copy of the signed form, all evidence, and proof of online submission, postmark, or delivery.
Current deadline guidance: 2026 general filing date: September 15; conditional late outer date: March 31, 2027. Salt Lake County lists September 15, 2026 as its general ordinary filing date and March 31, 2027 as the outer date for a conditional late application. For an application the county treats as late, Board acceptance is required before valuation review. The county's Tax Administration page also says the ordinary deadline is 45 days after notice mailing or September 15, whichever is longer, while its 2026 late guidelines describe submissions after September 15 as late. An owner with a later-mailed notice should confirm the property's filing status with the County Auditor rather than assume either rule resolves it. Evidence supporting the owner's opinion of total market value must accompany the application.
Salt Lake County lists September 15, 2026 as its general ordinary filing date.
The county publishes conditional 2026 late-appeal guidelines through March 31, 2027; Board acceptance is required before valuation review.
Its notice-relative timing statement and late guidelines should be reconciled with the County Auditor for a later-mailed notice.
The Board reviews total current-year market value rather than an isolated land value, improvement value, tax rate, or tax amount.
A late application must include appeal information, supporting evidence, and a letter explaining why it is late.
Official filing authority: Salt Lake County Board of Equalization through the County Auditor. https://www.saltlakecounty.gov/property-tax/property-tax-appeals/
Source: Salt Lake County Auditor, File a Property Valuation Appeal, https://www.saltlakecounty.gov/property-tax/property-tax-appeals/. Reviewed 2026-10-04.
Source: Salt Lake County Tax Administration, How to Appeal My Property Valuation, https://www.saltlakecounty.gov/tax-administration/appeal/. Reviewed 2026-10-04.
Source: Salt Lake County Auditor, 2026 Late Appeal Guidelines, https://www.saltlakecounty.gov/globalassets/1-site-files/property-tax/file-an-appeal/late-appeal-guidelines.pdf. Reviewed 2026-10-04.
Source: Salt Lake County Auditor, Property Tax Dates and Deadlines, https://www.saltlakecounty.gov/property-tax/dates--deadlines/. Reviewed 2026-10-18.
Source: Salt Lake County Assessor, Residential Real Estate, https://www.saltlakecounty.gov/assessor/departments/residential-real-estate/. Reviewed 2026-10-18.
Source: Salt Lake County Auditor, The Property Valuation Appeal Process, https://www.saltlakecounty.gov/property-tax/property-tax-appeals/the-appeals-process/. Reviewed 2026-10-18.
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