Your property tax bill arrives, and the number is higher than last year, again. Before you pay it and move on, it's worth asking whether that assessed value actually reflects what your home is worth.
Appealing your property taxes can lower your bill for this year or multiple (depending on the state), but it's not the right move for everyone.
This guide walks you through when an appeal makes sense, when it doesn't, and how to build a case that wins.
What is a Property Tax Appeal
If your assessed value is higher than your home's fair market value, appealing your property taxes is often worth it. You'll want evidence to back up your case:
Recent sales of similar homes
Errors in your property record
Documented condition issues that lower your home's value.
A successful appeal reduces your tax bill for the current year and, in many jurisdictions, sets a lower baseline for future assessments.
A property tax appeal is a formal request to your local assessor or review board to reconsider your property's assessed value. Your assessed value is the dollar amount the county assigns to your property, and it directly determines how much you pay in property taxes each year.
The process varies by state and county, but the core idea stays the same: you present evidence that your property is worth less than the assessor determined. If the reviewing body agrees, your assessed value goes down, and so does your tax bill.
How Much Are You Over Paying?
Why Property Tax Assessments Increase
Assessors don't raise your property's value randomly. A few common factors drive assessment increases:
Rising market values: When home prices climb in your area, assessors adjust values to reflect the real estate market. Your assessment can increase even if you haven't changed anything about your property.
Recent comparable sales: If similar homes nearby sold for high prices, your assessor may use those sales to justify a higher value for your home.
Home improvements: Adding square footage, renovating a kitchen, or finishing a basement can trigger a reassessment.
Reassessment cycles: Some jurisdictions reassess all properties on a set schedule, every year, every few years, or after a sale. A reassessment year often brings noticeable changes in value.
Understanding why your assessment increased helps you figure out whether the new value is accurate or inflated.
Signs Your Property May Be Overassessed
Not every assessment increase means you're being overcharged. However, certain red flags suggest your property may be valued higher than it's actually worth.
1. Your Assessed Value Exceeds Recent Comparable Sales
The strongest sign of overassessment is when your assessed value is higher than what similar homes in your area actually sold for. Comparable sales—often called "comps"—are recent sales of properties with similar size, age, condition, and location. If those homes sold for less than your assessed value, you likely have grounds for an appeal.
2. Your Property Record Contains Errors
Assessors rely on property records that sometimes contain mistakes. Common errors include incorrect square footage, wrong bedroom or bathroom counts, or features listed that don't exist—like a pool or finished basement you don't have. You can usually find your property record card on your county assessor's website or by requesting it in person.
3. Your Assessment Increased More Than Similar Properties
If your assessment jumped significantly while your neighbors' values remained relatively flat, that gap may indicate an error. Assessors use mass appraisal methods, and sometimes individual properties get miscategorized or miscalculated.
4. Your Home Has Condition Issues Not Reflected In The Valuation
Structural problems, outdated systems, deferred maintenance, or other issues that would lower your home's market value should be reflected in your assessment.
If your property has significant condition problems the assessor didn't account for, you may be paying taxes on a value your home couldn't actually command in a sale.
Your Neighbors Might Be Paying Less...
When You Should Appeal Your Property Tax Assessment
An appeal makes sense when the potential savings justify the effort, and you have evidence to support your case.
You have evidence of overassessment:
Comparable sales data, an independent appraisal, or documented property record errors give you a foundation for a successful appeal.
The potential savings are significant:
If the gap between your assessed value and actual market value is large enough, even a partial reduction can save you hundreds of dollars annually.
You're within the deadline:
Appeal windows are strict, typically 30 to 90 days after you receive your assessment notice. Check your local deadline as soon as your notice arrives.
You've verified exemption status(es) first:
Before appealing, confirm you're receiving all exemptions you qualify for, such as homestead, senior, or disability exemptions. Sometimes claiming a missed exemption is easier than winning an appeal.
When You Should Not Appeal Your Property Taxes
Appeals aren't always the right move. In some situations, filing could waste your time or even backfire.
However, in states like Texas, New York, Illinois, and Florida, there’s no penalty for a ‘failed appeal,’ meaning your assessed value cannot go up after a property tax appeal, only down. In states like Georgia or Washington, a poor appeal can result in an increase in your appraised value.
Your Appraised Value Matches Market Value
If your assessment accurately reflects what your home would sell for in today's market, you're unlikely to win a reduction. Appeals are won with evidence, and if comparable sales support your current value, you don't have a super strong case.
You Live In A State Where Appeals Can Increase Your Taxes
In most states, an unsuccessful appeal simply leaves your assessment unchanged. However, in a few states—including Washington and Georgia—filing an appeal can trigger a review that results in a higher assessed value.
If you're in one of those states, getting a professional review of your property's value before filing is especially important.
The Appeal Deadline Has Passed
Deadlines are non-negotiable.
If you've missed your window, you'll have to wait until next year's assessment notice to file. Mark your calendar as soon as you receive your notice so you don't miss future opportunities.
The Potential Savings Are Minimal
If the difference between your assessed value and market value is small, the time and effort involved in an appeal may not be worth it.
Calculate your potential tax savings before deciding whether to proceed, especially if your state or county has an upfront mandatory fee to file an appeal.
How To Appeal Your Property Taxes
The appeal process follows a predictable sequence in most jurisdictions.
1. Review Your Assessment Notice and Property Record
Start by reading your assessment notice carefully and pulling your property record card from your county assessor's website. Look for factual errors—wrong square footage, incorrect room counts, or features you don't have. Simple mistakes are often the easiest wins.
2. Research Comparable Sales in Your Area
Good comps share characteristics with your home: similar size, age, condition, and location. If comparable homes sold for less than your assessed value, you have evidence to support a reduction.
3. Gather Supporting Evidence
Build your case with documentation:
Recent comparable sales data
Photos showing property condition issues
An independent appraisal, if available
Copies of your property record highlighting errors
4. File Your Appeal Before the Deadline
Submit your appeal through your county's designated process—often online, by mail, or in person.
Double-check your deadline; missing it means waiting another year.
5. Attend the Hearing Or Submit Documentation
Depending on your jurisdiction, you may attend an informal review, a formal hearing, or simply submit written evidence. Present your case factually. Stick to the data rather than emotional arguments about high taxes or personal finances.
6. Receive and Review the Decision
You'll receive a written decision after your hearing or review. If your appeal succeeds, your assessed value and tax bill will be adjusted. If denied, you may have options for further appeal depending on your state's process.\
Common Property Tax Appeal Mistakes to Avoid
Even strong cases can fail due to avoidable errors.
Missing the Filing Deadline
Deadlines are strict, and there's no grace period. As soon as you receive your assessment notice, note the appeal deadline on your calendar.
Using Emotional Arguments Instead of Data
Assessors and review boards base decisions on evidence, not on how you feel about your tax bill. Arguments about affordability or personal circumstances won't help your case. Focus on comparable sales, property condition, and factual errors.
Failing to Research Comparable Properties
Weak or irrelevant comps undermine your appeal. Take time to find truly comparable sales—properties similar to yours in size, age, condition, and location that sold recently.
Overlooking Property Record Errors
Simple factual errors are often the easiest path to a reduction. Review your property record carefully before building a more complex case.
Ignoring Exemptions You May Qualify For
Exemptions like homestead, senior, or disability exemptions reduce your taxable value and may be easier to obtain than winning an appeal. Verify you're receiving everything you're entitled to before filing.
Should You Appeal Yourself or Hire a Professional
You can file an appeal on your own or work with a professional service. The right choice depends on your situation.
Factor | DIY Appeal | Professional Help |
|---|---|---|
Cost | Free (your time only) | Contingency fee or flat fee |
Time investment | Several hours of research, preparation, and attending hearings | Minimal; experts handle paperwork and hearings |
Expertise required | You'll learn local rules and gather evidence yourself | Professionals know what works in your jurisdiction |
Best for | Simple cases with clear errors | Complex cases or busy homeowners |
Professional services like Ownwell handle the entire process—researching comps, filing paperwork, and attending hearings—and typically charge only if they successfully reduce your taxes.
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Frequently Asked Questions About Property Tax Appeals
How often are property tax appeals successful?
Success rates vary by jurisdiction and the strength of your evidence. Homeowners who appeal with solid comparable sales data or documented errors often receive reductions, though outcomes depend on local market conditions and assessor practices.
How much does it cost to appeal property taxes?
Filing an appeal yourself is typically free, though you may pay for an independent appraisal if you want one. Professional services charge either a flat fee or a contingency fee—a percentage of your savings. Ownwell charges only if they successfully lower your taxes.
Can I appeal my property taxes every year?
Yes, in most states, you can file an appeal annually after receiving your assessment notice. Appealing regularly helps maintain a fair assessed value, especially in markets where home prices fluctuate.
Will my property taxes go up if I lose my appeal?
In most states, losing an appeal won't increase your taxes—your assessment simply stays the same. However, in a few states, such as Washington and Georgia, an appeal can trigger a review that results in a higher assessment. Check your local rules before filing.
How long does a property tax appeal take?
Timelines vary by jurisdiction but typically range from a few weeks to several months, depending on hearing schedules and caseload. Your county assessor's office can provide a more specific estimate for your area.
