A property appraisal dispute form is the written challenge you file to contest a valuation placed on your home, and which form you use depends entirely on who set the value. If a county or township assessor set it for property tax purposes, you file your county’s assessment appeal form with a local review board. If an appraiser hired by your mortgage lender set it during a purchase or refinance, you submit a reconsideration of value (ROV) request to the lender. There is no single nationwide form, and the two processes have different deadlines, different decision-makers, and different outcomes.
Which Form You Need
Start by identifying the source of the valuation you want to challenge. A tax assessment appeal targets the value your assessor assigned for calculating your annual property tax bill, and a successful appeal lowers your tax liability going forward. A mortgage appraisal dispute targets the value an appraiser assigned during a home purchase or refinance, and the goal is to get the value high enough to support the loan amount you need.
The evidence looks similar for both. The paperwork does not. Filing your county’s assessment appeal form with your lender, or an ROV request with your assessor, accomplishes nothing.
Filing a Property Tax Assessment Appeal
Every county or equivalent taxing authority publishes its own form, usually available on the assessor’s website or at the assessor’s office. Depending on where you live, it goes by names like Notice of Protest, Petition of Appeal, Application for Changed Assessment, or Assessment Appeal Application. The information it asks for is broadly consistent.
What the Form Asks For
Expect fields for:
- Your property’s parcel identification number (also called a PIN, APN, or folio number)
- The legal description of the property
- The current assessed or appraised value assigned by the assessor
- Your opinion of value — the number you believe is correct
- A brief written explanation of why the current value is wrong
Your opinion of value should come directly from your comparable sales analysis or your independent appraisal, not from a gut feeling. Keep the written explanation factual and reference your attached evidence by name, for example “see attached independent appraisal dated March 15, 2026” or “comparable sale at 412 Oak Street, closed February 2026 at $285,000.” Arguing that the market feels soft does not help you.
Confirm that the name and mailing address on the form match the ownership records the assessor has on file. A mismatch can delay processing or send hearing notices to the wrong place. The form requires a signature from you or an authorized agent, and some jurisdictions require a separate authorization form if someone else signs for you.
Deadlines
Filing windows are short and strictly enforced. In most jurisdictions, you have roughly 30 to 45 days from the date you receive your assessment notice. Miss it and you are locked in at the assessed value for the entire tax year, with generally no late-filing exception. Mark the deadline on your calendar the day the notice arrives.
How to Submit
You can typically file by mail, in person, or through an online portal. If you mail it, use certified mail with return receipt so you have proof it arrived before the deadline. If you file in person, ask the clerk to stamp a copy with the date received and keep that copy. If you file online, save the confirmation email or docket number the system generates — that is your proof of timely filing.
Filing Fees
Some jurisdictions charge nothing. Others charge a small administrative fee, generally ranging from under $25 to around $175 depending on the property type and the level of the appeal. Check your assessor’s website or call the office before filing.
Filing a Reconsideration of Value With Your Lender
When a home appraisal comes in lower than expected during a purchase or refinance, you dispute it through your lender, not through a government office. The mechanism is the reconsideration of value, or ROV, and you initiate it by contacting your lender — usually the loan officer — with specific evidence that the appraisal is wrong.
Federal interagency guidance issued in 2024 directs lenders to have clear, accessible ROV policies and to avoid creating unreasonable barriers for borrowers who want to raise concerns about a valuation.1Federal Register. Interagency Guidance on Reconsiderations of Value of Residential Real Estate Valuations
For loans sold to Fannie Mae, your ROV submission should include:
- Your name
- The property address
- The effective date of the appraisal
- The appraiser’s name
- The date of your request
- The specific parts of the appraisal you say are unsupported or inaccurate
- Up to five additional comparable properties with their data sources, such as the MLS listing number
- An explanation of why the new data supports a different value
Only one borrower-initiated ROV is permitted per appraisal, so put your strongest evidence in the first submission.2Fannie Mae. Appraisal Quality Matters
The lender reviews your request, confirms it contains enough detail, and passes the relevant information to the appraiser. The appraiser may revise the report or may stand by the original conclusion. Either way, the lender must communicate the outcome to you. If the ROV does not resolve the issue, the lender can order a second appraisal, though who pays for that varies by lender policy.
Get the Appraisal Report First
You cannot mount a useful ROV without the report itself. Federal law requires your lender to give you a free copy of every appraisal and written valuation developed in connection with a first-lien mortgage application, delivered promptly after completion or at least three business days before closing, whichever comes first. You can waive that timing and receive the copy at or before closing, but the lender cannot skip it. Even if the loan is denied, withdrawn, or never completed, you are entitled to the report within 30 days of the lender’s decision not to proceed. The lender cannot charge you for the copy itself, though it can pass along the cost of the appraisal.3eCFR. 12 CFR 1002.14 – Rules on Providing Appraisals and Other Valuations
Within three business days of receiving your application, the lender must also notify you in writing of your right to receive those copies. If you never got that notice, raise it. It is a compliance obligation.3eCFR. 12 CFR 1002.14 – Rules on Providing Appraisals and Other Valuations
Evidence to Attach
Whichever form you file, the evidence you attach is what carries the argument.
Comparable Sales
Recent sales of similar nearby properties are the most persuasive evidence in almost any appraisal dispute. Look for homes that share your property’s general size, age, layout, and condition, and that sold as close to the valuation date as possible. What counts as “recent” varies: some jurisdictions limit comparable sales to closings within 90 days of the valuation date, while others accept sales from the prior year. When in doubt, use the most recent transactions you can find. Three solid comparables is the minimum most review bodies expect; five gives you room to lose one or two if the reviewer decides a property is not truly comparable.
Pull the data from your county assessor’s website, the local MLS, or public records. For each comparable, note the sale price, sale date, lot size, living area, bedroom and bathroom count, and any features that differ from your property.
Independent Fee Appraisal
A licensed appraiser preparing an independent valuation of your home is the single strongest piece of evidence you can bring. A professional appraisal typically runs $300 to $500 for a standard single-family home, depending on size and location. Make sure the appraiser is state-licensed or state-certified and that the report addresses the same valuation date used in the assessment or mortgage appraisal you are challenging.
Physical Defects and Repair Costs
If the original appraiser missed or undervalued a significant defect — foundation damage, a failing roof, outdated electrical or plumbing — document it with dated photographs and a written repair estimate from a licensed contractor. A $40,000 foundation repair the assessor did not account for is a concrete, dollar-denominated reason to reduce the value. Vague claims that the property “needs work” carry almost no weight. Specific costs tied to specific conditions do.
What Happens After You File a Tax Appeal
Informal Review
Many assessor offices offer an informal review as the first step. A staff appraiser examines your evidence and may meet with you in person or by phone. Straightforward errors like wrong square footage, an incorrect bedroom count, or property characteristics that do not match reality often get resolved here without a hearing. The office may offer a revised value. You can accept it and close the appeal, or reject it and go to a formal hearing. In some jurisdictions the informal review is optional and you can skip straight to the hearing.
Formal Hearing
If informal review does not produce an acceptable result, the case moves to a formal hearing before an independent body, commonly called an Appraisal Review Board, Board of Equalization, or Value Adjustment Board depending on the state. You present your evidence and explain why the assessed value is too high. The assessor presents its case. The board or hearing officer issues a written decision, typically by mail.
One thing that catches people off guard: the assessor’s valuation usually carries a legal presumption of correctness. The burden is on you to prove the value is wrong, not on the assessor to prove it is right. Comparable sales and professional appraisals matter so much because “I just think it’s too high” does not overcome that presumption.
Further Appeals
If the board’s decision still leaves you with a value you believe is wrong, most states allow a further appeal, typically to a state-level tax tribunal or a district court. Those proceedings are more formal and often benefit from attorney representation. Weigh the potential tax savings against the cost of litigation before going that route.
Representation at Hearings
You can represent yourself at a property tax appeal hearing in every state, and most homeowners do. If you prepared your own evidence and feel comfortable presenting it, hiring a professional is not necessary. Some owners still hire a property tax consultant, a real estate appraiser to testify, or an attorney, especially when the assessed value is high enough that potential savings justify the cost.
Rules about who else can appear for you vary. Many jurisdictions allow an agent — a family member, a tax consultant, a real estate professional — to represent you if you file an authorization or power-of-attorney form with the review board. Some states restrict representation of business entities such as corporations and LLCs to licensed attorneys when the disputed amount exceeds a certain threshold. Check your local review board’s rules before designating a non-attorney representative for an entity-owned property.
If You Win a Tax Appeal and Have an Escrow Account
A successful property tax appeal does not lower your monthly mortgage payment right away. Your loan servicer runs an escrow analysis once a year to compare what it collected against what it paid out for taxes and insurance. When the analysis shows a surplus because your taxes dropped, the servicer must refund any surplus of $50 or more within 30 days. A surplus under $50 can be refunded or credited toward next year’s escrow payments. Going forward, the servicer recalculates your monthly escrow based on the new, lower tax bill.4eCFR. 12 CFR 1024.17 – Escrow Accounts