How to Appeal Your Property Tax in Utah: Step-by-Step Guide

Utah property tax assessments are based on fair market value, and county assessors are required to update values annually. When the market moves quickly — as it has across the Wasatch Front for the past several years — assessments can overshoot, and some homeowners end up paying taxes on a valuation that doesn’t match what their home would actually sell for. Utah’s appeal process is straightforward but time-sensitive, with strict deadlines that vary by county. The potential savings are real: a successful appeal that reduces your assessed value by $50,000 on a home assessed at $550,000 would save roughly $151 per year in property taxes (at Utah’s average 0.55% effective rate after the primary residence exemption). That sounds modest, but the reduced assessment carries forward into future years, compounding the savings. Here’s how the process works, step by step. Start by checking how your current assessment compares to market value using our property tax calculator.

How Utah Property Tax Assessment Works

Every property in Utah is assessed at 100% of fair market value by the county assessor’s office. However, primary residences receive a 45% exemption, meaning only 55% of the assessed value is taxable. This exemption is one of the most generous homestead-type benefits in the country. The tax rate (mill levy) varies by taxing district — your total rate combines county, city, school district, and special district levies.

Step 1: Review Your Assessment Notice

County assessors mail valuation notices between July and August, depending on the county. The notice shows your property’s assessed fair market value as of January 1 of the current year. This is the value you’re appealing, not the taxable value (which is 55% of the assessed value for primary residences). Review the notice for accuracy: is the square footage correct? The lot size? The number of bedrooms and bathrooms? Does it list the right construction year? Factual errors in the property description are the easiest appeals to win. The notice also includes the appeal deadline and instructions for filing.

Step 2: Determine If Your Assessment Is Too High

An appeal only makes sense if your home’s assessed value exceeds what it would actually sell for on the open market as of January 1 of the tax year. To evaluate this, pull recent comparable sales data — homes similar to yours in size, age, condition, and location that sold within the six months before and after the January 1 valuation date. Focus on sales within a half-mile radius if possible, or within your specific neighborhood. Good sources: UtahRealEstate.com (closed sales data), county recorder’s office (deed records), and Zillow/Redfin recent sales.

Compare your assessed value to the median sale price of the comparable homes. If your assessment is within 5% of comparable sales, an appeal is unlikely to succeed — assessors have reasonable latitude. If the gap is 10% or more, you have a strong case. Between 5-10%, the outcome depends on the quality of your evidence and the specific comparables you can present.

Step 3: Gather Your Evidence

The strength of your appeal rests entirely on evidence. Opinions and feelings about your home’s value don’t carry weight with the Board of Equalization. Effective evidence includes:

Comparable sales: Three to five recent sales of similar homes in your area. For each comparable, document the sale price, sale date, square footage, lot size, year built, condition, and any adjustments needed (if the comp has a finished basement and yours doesn’t, note the difference). Adjustments should be reasonable — $20-$30 per square foot for finished space, $5,000-$15,000 for significant condition differences.

Property condition issues: If your home has problems that reduce its market value — foundation cracks, an aging roof, outdated HVAC, deferred maintenance — document them with photos and repair estimates from licensed contractors. A $15,000 foundation repair estimate directly supports a $15,000 reduction in assessed value.

Errors in property records: If the assessor’s records show incorrect square footage, an extra bathroom that doesn’t exist, or a finished basement that’s actually unfinished, bring documentation (floor plans, photos, or a survey) showing the correct details.

Professional appraisal: A full appraisal from a licensed appraiser costs $400-$600 but carries significant weight in hearings. If the appraisal value is substantially below the assessment, it’s strong evidence. However, the appraisal cost only makes sense if the potential tax savings over several years justify the expense.

Step 4: File Your Appeal

Utah property tax appeals go through two levels: an informal review with the county assessor’s office, followed by a formal hearing before the County Board of Equalization (BOE) if the informal review doesn’t resolve the issue.

Informal review: Contact your county assessor’s office and request an informal review of your valuation. Many counties encourage this step before formal appeals. You’ll meet with an appraiser from the assessor’s office, present your comparable sales data, and discuss why you believe the assessment is too high. About 30-40% of disputes are resolved at this stage, often with partial reductions. There’s no downside to trying — if you’re not satisfied with the result, you can still proceed to the formal hearing.

Formal BOE hearing: If the informal review doesn’t produce an acceptable result, file a formal appeal with the County Board of Equalization. The deadline is September 15 or 45 days from the date your assessment notice was mailed, whichever is later. Filing typically requires a written application (available on your county assessor’s website) and a filing fee of $0-$25 depending on the county. Most BOE hearings are scheduled in September and October.

Step 5: Present Your Case at the BOE Hearing

The BOE hearing is a relatively informal proceeding — you don’t need a lawyer, though you may bring one. The board typically consists of appointed community members. You’ll have 10-20 minutes to present your evidence, and the county assessor’s representative will present their position. The board may ask questions.

Effective presentation strategies: organize your comparable sales in a clear table format, bring printed copies for each board member (typically 3-5 copies), lead with your strongest comparable sale, and be specific about how your property differs from the assessed value. Avoid emotional arguments about taxes being “too high” — the board’s job is to determine fair market value, not set tax policy. Stay focused on the gap between your assessed value and the actual market evidence.

Step 6: After the Hearing

The BOE will issue a written decision, usually within 30 days of the hearing. If the board reduces your assessment, the new value applies to the current tax year and carries forward until the next reassessment. If the board upholds the original assessment, you have 30 days to file a further appeal with the Utah State Tax Commission. Tax Commission appeals are more formal, involve written submissions, and may require professional representation. Most homeowners don’t pursue this level — it’s primarily used for commercial properties or cases with very large dollar amounts at stake.

Common Reasons Appeals Succeed

Understanding why appeals succeed — and why they fail — helps you focus your preparation on arguments that work.

Factual errors in property records (highest success rate): Incorrect square footage, wrong lot size, an extra bathroom or bedroom listed that doesn’t exist, or a finished basement recorded as unfinished. These are objective errors that the assessor will correct once documented. Bring your home’s actual floor plan, a professional measurement, or a survey to prove the discrepancy.

Market decline or overvaluation (moderate success rate): If your home’s assessment increased significantly but comparable sales in your neighborhood haven’t kept pace, you have a legitimate argument. This is most effective when you have three or more closed sales of similar homes at prices below your assessment. The sales must be recent (within 6-12 months of the January 1 valuation date) and genuinely comparable in size, age, and condition.

Condition issues (moderate success rate): A home with a failing roof, cracked foundation, outdated electrical, or other significant deferred maintenance is worth less than a comparable home in good condition. Bring contractor estimates for the repairs — a $20,000 roof replacement estimate supports a $20,000 reduction in assessed value. Photos documenting the condition strengthen the case.

Arguments that typically fail: “My taxes are too high” (the BOE sets value, not tax rates), “my neighbor pays less” (different properties can have different values), “I can’t afford this” (hardship doesn’t change market value — though the circuit breaker program may help with the tax burden), and “the assessment went up too much” (if comparable sales support the increase, the assessment is correct). Stay focused on market value evidence, not subjective arguments about fairness or affordability.

County-Specific Deadlines and Contacts

Compare With Other States

Considering other markets? Here’s how other states compare:

• How to Appeal Your Property Tax in Mississippi: Step-by-Step Guide
• How to Grieve Your Property Tax in New York: Step-by-Step Guide
• How to Appeal Your Property Tax in Kansas: Step-by-Step Guide

Frequently Asked Questions

How much can I save by appealing my property tax in Utah?

Savings depend on the size of the reduction. A $50,000 reduction on a primary residence saves roughly $151 per year ($50,000 × 55% taxable portion × average mill levy). A $100,000 reduction saves about $302 annually. These savings compound over the years the reduced assessment remains in effect. The median successful appeal in Utah results in a 5-10% reduction in assessed value. On a home assessed at $550,000, that’s $27,500-$55,000 off the assessment, saving $83-$151 annually. Use our property tax calculator to model specific scenarios.

What is the deadline to appeal my Utah property tax?

The formal deadline is September 15 or 45 days from the date your assessment notice was mailed, whichever is later. Most counties mail notices in late July or early August, making the effective deadline mid-to-late September. Missing this deadline means you cannot appeal the current year’s assessment — you’ll need to wait until the next assessment cycle. Mark your calendar when the notice arrives and don’t wait until the last week to gather evidence. Our affordability calculator includes property taxes in the total housing cost estimate, so a successful appeal directly improves your monthly numbers.

Do I need a lawyer or appraiser to appeal?

No. Most successful homeowner appeals are handled without professional representation. The Board of Equalization hearing is informal enough for homeowners to present their own comparable sales data effectively. A professional appraisal ($400-$600) strengthens your case but is only cost-effective if the potential annual savings exceed the appraisal cost within a few years. A lawyer is rarely necessary for residential appeals but may be worthwhile for commercial properties or high-value homes where the stakes justify the legal fees. If you’re preparing to sell and a lower assessment helps your pricing strategy, our seller net proceeds calculator can model the impact.

Can my assessment increase as a result of appealing?

Technically, yes — the BOE can increase your assessment if they determine it’s too low. In practice, this is extremely rare for residential properties. Assessors generally don’t argue for increases at hearings unless the property has clear unreported improvements. The risk of an appeal resulting in a higher assessment is minimal, and the potential reward of a reduction makes it worth pursuing if your evidence supports the case.

What if I disagree with the BOE decision?

You can file a further appeal with the Utah State Tax Commission within 30 days of the BOE’s written decision. Tax Commission appeals are more formal, involving written submissions and potentially an administrative hearing. The process takes several months, and professional representation (attorney or tax consultant) is advisable at this level. Most homeowners accept the BOE decision unless the amount at stake is substantial. For additional context on how Utah property taxes work, see our mortgage and tax resources.