Property tax appeals are more common than most homeowners realize. According to the National Taxpayers Union Foundation, roughly 1 in 5 homeowners who file appeals succeed in reducing their assessment.

When Should You Appeal?

The most common valid reasons:

  • Your home is assessed above similar properties in your neighborhood
  • The assessor used outdated or incorrect data (wrong square footage, wrong number of bedrooms)
  • Market conditions have declined since your last assessment
  • You paid less than the assessed value when you purchased the home
  • Your property has defects the assessor didn't account for (foundation issues, flooding, easements)

Step 1: Check Your Assessment

Before filing, compare your assessed value with the median effective rate for your county. Our calculator shows the county average. If your assessed value is significantly above comparable properties, you likely have a case.

Most county assessors publish their records online. Look for:

  • Your current assessed value and market value
  • The assessment ratio used
  • Recent comparable sales in your neighborhood

Step 2: Gather Evidence

Strong appeals include:

  • Recent sales of comparable homes (3-5 properties within 1 mile, similar size/age/condition)
  • An independent appraisal (usually $300-$600, and may be required for higher-value appeals)
  • Photos documenting defects (roof damage, foundation cracks, water damage)
  • Contractor estimates for repairs you haven't yet completed

Step 3: File on Time

Deadlines vary by jurisdiction:

  • Texas: May 15 or 30 days after notice, whichever is later
  • California: July 2 to September 15 (regular appeals)
  • New York: Varies by municipality — often Grievance Day in May or June
  • Florida: 25 days after the TRIM notice (usually August or September)

Missing the deadline means waiting another year.

Step 4: The Hearing

Most jurisdictions offer an informal review with the assessor first. If that fails, you can request a formal hearing before the county board of equalization or a similar body. You can represent yourself or hire a property tax attorney (who often works on contingency, taking 25-40% of the first year's savings).

Step 5: If You Win

Success typically reduces your assessed value to a more defensible level. Some jurisdictions also refund overpaid taxes from prior years, but most only apply the reduction going forward.

Cost-Benefit Analysis

For a small appeal (under $5,000 in assessed value difference), self-representation is usually worth it. For larger appeals, hiring an attorney often makes sense — a 40% contingency on $2,000/year savings is $800, but you keep $1,200 you otherwise wouldn't have gotten.

The Bottom Line

Property tax appeals are a right, not a favor. If you believe your assessment is wrong, appeal it. The process takes 1-3 hours of your time for most cases, and the expected value is positive.

This guide is for informational purposes only and does not constitute legal or tax advice. Consult a property tax attorney for complex cases.