What a property tax appeal board does and when you need one
A property tax appeal board is a local government body that reviews disputes between property owners and the tax assessor's office. When you believe your property has been assessed at too high a value — and therefore taxed too much — you file a formal challenge with this board. The board holds a hearing, reviews evidence from both you and the assessor, and issues a written decision on whether your assessment should be lowered, kept the same, or (rarely) raised.
The board exists because assessments are not always accurate. A home may be valued based on outdated sales data, incorrect square footage, or missing information about damage or improvements. You have the right to dispute the number the assessor assigned to your property, and the appeal board is the official channel to do that.
The board is not the same as the assessor's office. The assessor determines the value; the board reviews whether that information was correct. If you contact the assessor first and disagree with their response, the appeal board is your next step.
Key Takeaways
- Property tax appeal boards are run by your county or municipality and hear disputes about assessed property values, not tax rates or exemptions.
- You must file a written notice of appeal by a specific important date — usually 30 to 45 days after you receive your assessment notice — or you lose the right to challenge that year's value.
- The board will ask you to provide evidence that your property is worth less than the assessed value, such as recent sales of similar homes, a professional appraisal, or documentation of property defects.
- Most boards hold in-person or virtual hearings where you can present your case; you can represent yourself or hire a property tax attorney or appraiser to help.
- If you disagree with the board's decision, you may have a limited right to appeal further to a state court, depending on your state's rules.
Finding your local appeal board and the important date to file
Your property tax appeal board is operated by your county assessor's office, county clerk, or a separate board of review — the name and location vary by state and county. The easiest way to find it is to call your county assessor's office and ask where to file a property tax appeal. They will give you the board's name, address, phone number, and the exact important date for your property.
The important date is critical. Most states require you to file your notice of appeal within 30 to 45 days of receiving your assessment notice. Some states give you longer — up to 90 days — but many give you less. If you miss the important date, you cannot challenge that year's assessment, and you will have to wait until the next assessment cycle (usually one or three years later, depending on your county) to file again.
Write down the important date on a calendar. If you received your assessment notice in April, and the important date is 45 days later, you have until mid-May. Do not assume you have until the end of the year. Once the important date passes, the board will reject any appeal filed after it.
What information you need to gather before filing
Before you file, collect evidence that supports your claim that the assessed value is too high. The board will not lower your assessment based on your opinion alone — you need documentation.
Start with recent sales of similar homes in your neighborhood. Look for homes that sold within the last 6 to 12 months, have similar square footage, lot size, age, and condition to yours, and are in the same school district or neighborhood. Real estate websites like Zillow, Redfin, and county property records databases show recent sale prices. If comparable homes sold for significantly less than your assessed value, that is strong evidence.
If you have had a professional appraisal done — for a refinance, insurance, or estate purposes — bring that document. An appraisal by a licensed appraiser carries weight with the board. You can also hire an appraiser specifically for the appeal, though that costs money (typically $300 to $600).
Document any defects or needed repairs: a roof that needs replacement, foundation cracks, outdated plumbing or electrical systems, or deferred maintenance. Take photos and get written estimates from contractors if possible. If the assessor's value assumes your home is in good condition but it actually needs significant work, that gap is evidence for your case.
How to file your notice of appeal
Contact your county assessor's office or the appeal board directly and ask for the notice of appeal form. Some counties provide a straightforward one-page form; others have a longer questionnaire. Fill it out completely and honestly.
The form will ask for your property address, parcel number (found on your tax bill or assessment notice), the assessed value you are challenging, the value you believe is correct, and your reason for the appeal. Be specific: do not write "the assessment is too high." Write "comparable homes in the neighborhood sold for $50,000 to $75,000 less" or "the assessor's records show 2,500 square feet but the home is actually 2,100 square feet."
File the form by the important date. Most counties accept forms by mail, email, or in person. Keep a copy for your records and, if you mail it, use certified mail with a return receipt so you have proof of the filing date. Do not rely on regular mail — if it arrives late, your appeal will be rejected.
After you file, the board will send you a hearing date and instructions. Read those instructions carefully. They will tell you what documents to bring, whether the hearing is in person or virtual, and how much time you have to present your case.
Preparing for and attending your hearing
Most appeal boards hold hearings where you present your evidence and the assessor presents theirs. You will have a set amount of time — often 10 to 20 minutes — to make your case. Organize your materials in advance: put your comparable sales data, photos, appraisal, and repair estimates in a folder or binder, in order.
Write down the key points you want to make. Bring the original assessment notice and your tax bill. If you are presenting comparable sales, print out the listing information and sale price for each one. If you have an appraisal, bring the full report, not just the cover page.
You can represent yourself at the hearing. You do not need a lawyer. However, if your property is valuable, the assessment is significantly off, or you are uncomfortable speaking in front of a board, you can hire a property tax attorney or a certified appraiser to represent you. They will charge a fee — typically $500 to $2,000 depending on the complexity — but they know how to present evidence effectively and may save you more in taxes than they cost.
At the hearing, stay calm and factual. Explain why you believe the assessed value is wrong, point to your evidence, and answer questions from the board members. The assessor will also present their case. Do not interrupt or argue — let the board do its job.
Understanding the board's decision and your options if you disagree
The board will issue a written decision within a set timeframe — usually 30 to 90 days after the hearing. The decision will state whether the assessment is upheld, lowered, or (rarely) raised. If the assessment is lowered, your property taxes will be reduced for that year and possibly future years, depending on your state's rules.
If you disagree with the board's decision, you may have the right to appeal further. Some states allow you to file a second appeal with a higher board or commission. Others allow you to take the case to state court. However, these options have strict important date — often 30 days or less — and may require you to post a bond or pay a filing fee. Check your state's rules when ready after receiving the board's decision.
Keep in mind that appealing beyond the board is expensive and time-consuming. Most people accept the board's decision. If you lost at the board level, a court is unlikely to overturn the decision unless there is a clear legal error or the board ignored evidence you presented.
Common mistakes to avoid in your appeal
Do not miss the filing important date. This is the most common mistake. Once the important date passes, you cannot file that year. Mark the important date on your calendar the day you receive your assessment notice.
Do not file a vague appeal. Saying "the assessment is unfair" will not work. You must explain specifically why — the home is smaller than recorded, comparable homes sold for less, the property has defects the assessor did not account for. The board needs facts, not complaints.
Do not rely only on your opinion of what the home is worth. The board wants to see comparable sales, appraisals, or other objective evidence. Your belief that the home is worth less does not count as evidence.
Do not assume the assessor made a straightforward error and will fix it without a hearing. If you contact the assessor before filing an appeal and they refuse to lower the assessment, filing an appeal is your only option. The appeal board exists because assessors and owners sometimes disagree.
Do not bring new evidence to the hearing that you did not mention in your notice of appeal. Some boards will not accept it. Include your strongest evidence in the written notice so the assessor and board know what to expect.
Frequently Asked Questions
Can I appeal my property tax assessment if I just bought the home?
Yes, but the timing depends on your state's reassessment rules. Some states reassess property when it changes hands, and you can appeal that new assessment. Others reassess on a fixed schedule regardless of sale. Contact your assessor's office to find out when your property will be reassessed and when you can file an appeal.
What if I cannot attend the hearing in person?
Many boards now allow virtual hearings by phone or video conference. Ask when you receive your hearing notice. If the board does not offer that option and you cannot attend, you may be able to submit written evidence instead, though this is less effective than speaking in person. Call the board to ask what alternatives are available.
How much will my taxes go down if the board lowers my assessment?
That depends on your local tax rate, which varies by county and municipality. A lower assessment means a lower tax bill, but the exact amount depends on your property tax rate. Your assessor's office can calculate the tax savings for you if you give them a proposed lower value.
Can the board raise my assessment instead of lowering it?
Yes, though it is uncommon. If you file an appeal and present evidence that your home is worth more than the current assessment, the board can raise the value. This is why some people hesitate to appeal — they worry the board will increase their taxes. However, most boards will not raise an assessment unless your own evidence clearly supports a higher value.
What happens if I disagree with the board's decision?
You may have the right to appeal to a higher board, commission, or state court, depending on your state. These appeals have strict important date — usually 30 days or less — and may require a lawyer or filing fee. Check your state's property tax appeal rules when ready after receiving the board's decision if you want to pursue this option.