How to Appeal Your Property Tax Assessment

Your Property Tax Assessment Jumped 25% This Year — Here's How to Fight It

Your annual property tax notice arrives and the assessed value jumped from $320,000 to $400,000. At your county's 1.2% effective tax rate, that's a $960 increase in your annual bill — from $3,840 to $4,800.

You suspect the jump is too aggressive. Your neighbors' homes haven't sold for $400,000. You're right to question it. Property tax assessors work in bulk, and bulk assessments produce errors that individual owners can correct through the appeal process.

Approximately 40-50% of property tax appeals that go to a formal hearing result in a reduced assessment. The success rate is highest when homeowners provide specific comparable sales evidence rather than general complaints about unfairness.

Step 1: Review Your Assessment Notice (Before the Deadline)

Every appeal has a deadline — typically 30 to 90 days from when you receive your assessment notice. Missing this window means waiting until next year.

Check three numbers on your notice:

1. Assessed value: The value the county assigned to your property
2. Assessment ratio: Some counties assess at 80% or 50% of market value. If your ratio is 80%, an $400,000 assessed value implies a $500,000 market value estimate.
3. Appeal deadline: The specific date, not a vague "60 days." Mark it on your calendar immediately.

Request your property record card from the assessor's office (free in most counties, available online in many). This card shows the assessor's data: square footage, bedroom/bathroom count, age, and condition rating. Errors here — a 2,400 sq ft home listed as 2,800 sq ft — are common and easy to prove.

Step 2: Build Your Comparable Sales Case

The most compelling property tax appeal argument is simple: "Similar homes sold recently for less than your assessed value." This is called the comparable sales (or "comp") approach.

Find 3-5 sales of similar homes within 0.5-1 mile, sold within the past 12 months:

• Similar square footage (within 10-15%)
• Similar age and condition
• Same school district or neighborhood classification

Where to find comps:

• Zillow and Redfin show recent sales data
• County property records (usually searchable at the assessor's website)
• Your real estate agent can pull MLS comps

Example case: Your home is assessed at $400,000. You find four recent sales:

• 2,200 sq ft ranch, 0.3 mi away, sold $355,000
• 2,100 sq ft ranch, 0.5 mi away, sold $362,000
• 2,400 sq ft ranch, 0.4 mi away, sold $375,000
• 2,300 sq ft ranch, 0.2 mi away, sold $368,000

Average comparable sale: $365,000. Your assessment is $35,000 higher — a reasonable basis for appeal. A successful appeal to $365,000 saves you $420/year at a 1.2% tax rate.

Step 3: File the Informal Appeal First

Most counties offer an informal review before the formal hearing. This is a meeting or phone call with a staff assessor. Bring your comps and property card corrections. Informal reviews resolve about 60% of appeals without a formal hearing.

Tone matters. You're not accusing the assessor of wrongdoing — bulk assessments use models that work for most properties and produce errors for some. Present your evidence professionally: "I've found four comparable sales averaging $365,000. My assessment of $400,000 appears to exceed market value by approximately $35,000."

If the informal review doesn't resolve the issue, you can escalate to the formal hearing board.

Step 4: The Formal Appeal Hearing

Formal hearings are typically held by an independent review board — not the assessor's office. In most jurisdictions, the process is:

1. File written appeal with supporting evidence (comps, property card corrections, recent appraisal if you have one)
2. Receive hearing date (typically 2-8 weeks after filing)
3. Present your case in 10-15 minutes; the assessor presents their case
4. Board issues a decision within 30-90 days

A professional appraisal ($400-$600) is the strongest possible evidence but rarely necessary unless the property is unique or the appeal is for a large dollar amount. For a typical residential property, well-documented comparable sales win most cases without the appraisal cost.

What You Can Win — and What You Can't

A successful appeal reduces your assessment — but not necessarily to the price you want. The board will typically split the difference or adjust to a defensible market value based on the evidence presented.

On a $400,000 assessment appealed to $365,000 in a 1.2% county: annual savings of $420/year, or $4,200 over 10 years assuming the reduced assessment holds. Many counties reassess annually or biannually, so your victory may be temporary.

You generally cannot appeal based on:

• The assessment being higher than last year (increases are legal)
• Your neighbors paying lower taxes on a different property type
• General concerns that tax rates are too high (that's a legislative matter, not an assessment appeal)

Is a Property Tax Appeal Worth Your Time?

The typical formal appeal takes 3-6 hours: gathering comparable sales, filing paperwork, and attending the hearing. For a potential savings of $420/year on a successful appeal, that's $70-$140 per hour of your time — reasonable for most homeowners.

For smaller potential savings (under $200/year), the informal review is worth pursuing since it takes 1-2 hours. Skip the formal hearing unless the informal review fails and the stakes are high enough to justify the time.

Professional property tax appeal services exist in most major markets. They typically work on contingency — taking 30-50% of the first year's savings if they succeed, with no fee if they don't. On a $960/year over-assessment, hiring a contingency firm nets you $480-$672 versus doing it yourself. For large commercial properties, this arrangement is often worthwhile. For a typical residence, doing it yourself captures the full savings.

The calculator below shows how your assessed value compares to typical rates in your state, which can help you calibrate whether an appeal is worth the time investment.

This article provides general tax information for educational purposes. Tax situations vary — verify specifics with a licensed tax professional.