You can dispute a real estate appraisal by filing a Reconsideration of Value (ROV) with your lender, and the disputes that succeed are the ones built on documented errors in the report — wrong square footage, missed upgrades, poor comparable sales, or a zoning misclassification — rather than on disagreement with the final number. Federal law gives you the right to a copy of the report before closing, and 2024 interagency guidance requires lenders to maintain a clear process for challenging the result.1Federal Register. Interagency Guidance on Reconsiderations of Value of Residential Real Estate Valuations
Get the Full Appraisal Report First
You cannot dispute what you haven’t read. Under Regulation B of the Equal Credit Opportunity Act, your lender must give you a copy of every appraisal or written valuation connected to your loan application, promptly after completion or at least three business days before closing, whichever comes first.2eCFR. 12 CFR 1002.14 – Rules on Providing Appraisals and Other Valuations If the deal falls through, the lender still owes you the report within 30 days. If closing is approaching and you don’t have it, ask your loan officer in writing.
What Counts as a Valid Reason to Dispute
Not every low number is a wrong number. Appraisers sometimes land on a value you don’t like but can fully defend. Successful disputes point to specific, provable mistakes.
Factual Errors About the Property
Wrong square footage is the most straightforward error. An appraiser might miss a finished basement, fail to measure an addition, or record three bedrooms when there are four. Missed upgrades count too: a new roof, a remodeled kitchen, energy-efficient windows the appraiser didn’t note. These errors suppress the valuation directly because the report is describing a less valuable property than the one that actually exists.
Weak Comparable Sales
The comparable sales an appraiser chooses carry enormous weight. Fannie Mae requires at least three closed comparable sales in the sales comparison approach, sharing similar physical characteristics with your property, including site, room count, finished area, style, and condition. Comps should come from the same market area when possible, and Fannie Mae guidelines indicate sales closed within the last 12 months, though the best comps may sometimes fall outside that window.3Fannie Mae. B4-1.3-08, Comparable Sales
Disputes get traction when the appraiser used a sale that doesn’t fit: a foreclosure to value a well-maintained home, a property across a highway or railroad that sits in a clearly different neighborhood, or a sale so old it doesn’t reflect current market conditions. If you can identify recent, nearby sales of similar homes that paint a different value picture, that forms the core of your challenge.
Zoning and Land-Use Mistakes
A less obvious error involves incorrect zoning classification. If the appraiser records a residential property as commercially zoned, or misses that your property has a legal non-conforming use, the “highest and best use” analysis gets thrown off. That analysis drives which comparable sales are appropriate. A home misclassified under the wrong zoning code can end up compared against the wrong types of properties entirely.
How to Build the Reconsideration of Value Package
A Reconsideration of Value is the formal name for a documented challenge. There is no single federally mandated form. Each lender may have its own process, so ask your loan officer what they accept.
Your request should include a clear written explanation of what you believe is wrong, tied to specific pages or fields in the report. Vague complaints that the value is “too low” go nowhere. Identify the exact data point that’s incorrect and provide documentation that shows the right answer. Wrong square footage? Include your own measurements or county assessor records. Missed upgrade? Provide receipts, permits, or photos.
For comparable sales challenges, include alternative sales the appraiser didn’t use. The interagency guidance says an ROV request may include comparable properties not previously identified, property characteristics that were incorrectly reported, or other information that may affect the value conclusion.1Federal Register. Interagency Guidance on Reconsiderations of Value of Residential Real Estate Valuations Federal guidance does not mandate a specific number of comps you must include. If your loan is FHA-insured, HUD caps borrower-submitted alternative comparable sales at five per request.4U.S. Department of Housing and Urban Development. Appraisal Review and Reconsideration of Value Updates Each alternative sale should be explicitly linked to the error you’re challenging, with accurate sale dates, prices, and distance from your property.
Why You Submit to the Lender, Not the Appraiser
The ROV package goes to your lender. Federal appraisal independence rules prohibit anyone with an interest in the transaction from attempting to coerce, instruct, or induce an appraiser to reach a targeted value.5Office of the Law Revision Counsel. 15 USC 1639e – Appraisal Independence Requirements The statute doesn’t single out borrowers by name, but it broadly covers any person with an interest in the deal. Lenders route all communications through their underwriting team or an Appraisal Management Company, which acts as an independent intermediary.
The underwriter reviews the ROV package first to decide whether the evidence warrants sending it to the appraiser. For FHA loans, HUD specifically requires the underwriter to thoroughly assess all borrower-initiated ROV requests before communicating with the appraiser.4U.S. Department of Housing and Urban Development. Appraisal Review and Reconsideration of Value Updates Submit everything electronically so there’s a timestamped record, and keep copies of every document.
Timeline and What to Expect
Response times vary, but most lenders aim to resolve an ROV within one to two weeks. The appraiser reviews the new information and either revises the report or issues a written explanation of why the original value stands. This is where the quality of your evidence matters most. An appraiser is far more likely to adjust when you’ve identified a clear factual error or provided genuinely comparable sales they overlooked than when you’ve argued the property is “worth more.”
If the original appraiser declines to change the value and the lender believes the report has fundamental problems, the lender may order a second independent appraisal. A new appraisal typically costs $300 to $500 depending on the property and market, and the second report usually becomes the controlling value for the loan. For FHA loans, HUD requires that any ROV be resolved before closing and that no ROV costs be charged to the borrower.4U.S. Department of Housing and Urban Development. Appraisal Review and Reconsideration of Value Updates
Options If the Dispute Fails
Not every ROV succeeds. Your next steps depend on whether you’re buying or refinancing.
If You’re Buying
If your purchase contract includes an appraisal contingency, you can typically walk away and keep your earnest money deposit. Most appraisal contingencies give you a window to decide whether to move forward, renegotiate, or cancel, and missing that deadline can cost you your right to exit. A related protection is the mortgage contingency, which lets you cancel if financing falls through, including because of a low appraisal.
To keep the deal alive, you have two main choices. You can renegotiate the purchase price with the seller to match the appraised value, which asks the seller to absorb the gap. Or you can bring additional cash to closing to cover the difference. Some contracts include an appraisal gap clause where the buyer agrees upfront to pay a specified amount above the appraised value, committing you to cover the gap up to whatever dollar limit you set when you made the offer.
If You’re Refinancing
On a refinance, there’s no seller to negotiate with. A low value means your home’s equity is lower than expected, which may push your loan-to-value ratio too high for the product you wanted. Your options generally are to wait for the market to improve and reapply, make improvements that could raise value, or explore a different loan product with less restrictive LTV requirements. Some lenders will order a second appraisal when the first has clear problems.
How a Low Appraisal Reshapes Your Loan
Even if you skip the dispute, understand what a low value does to the loan. Lenders calculate loan-to-value using the lower of the appraised value or the purchase price. If you agreed to buy a home for $400,000 but it appraises at $370,000, the lender treats $370,000 as the property’s value. Your down payment now covers a smaller percentage of that figure, pushing LTV higher.
When LTV rises above 80%, most conventional lenders require private mortgage insurance. Fannie Mae’s mortgage insurance coverage requirements kick in at 80.01% LTV and scale up as the ratio increases.6Fannie Mae. Mortgage Insurance Coverage Requirements A low appraisal can add a monthly PMI cost you weren’t planning on. Under the Homeowners Protection Act, you can request PMI cancellation once your loan balance reaches 80% of the original property value, and the servicer must automatically terminate it at 78%.7Consumer Financial Protection Bureau. Homeowners Protection Act – PMI Cancellation Act Procedures “Original value” means the appraised value at the time of the loan, so a low appraisal locks in a lower baseline for that calculation too.
If You Suspect Appraisal Bias
Some low appraisals reflect discriminatory assumptions about borrowers or neighborhoods rather than accurate valuation. Federal regulators have acknowledged persistent patterns of properties in communities of color being undervalued.8Consumer Financial Protection Bureau. Appraisal Standards Must Include Federal Prohibitions Against Discrimination If you believe race, ethnicity, national origin, or another protected characteristic influenced your appraisal, the ROV process is not your only tool.
You can file a housing discrimination complaint with HUD’s Office of Fair Housing and Equal Opportunity, online, by phone at 1-800-669-9777, or by mail to your regional FHEO office. Include your name and address, the appraiser’s information, a description of what happened, and the dates involved. Federal law prohibits retaliation against anyone who files or participates in the investigation.9U.S. Department of Housing and Urban Development. Report Housing Discrimination You can also submit a complaint to the CFPB if you believe your lender mishandled the appraisal process.
Filing a Complaint Against the Appraiser
Separate from the ROV and discrimination complaints, every state maintains a licensing board that oversees appraisers. If you believe the appraiser committed professional misconduct — not just reached a value you disagree with, but violated professional standards, fabricated data, or failed to physically inspect the property — you can file a formal complaint with your state’s appraiser licensing board. The name varies by state; a search for your state plus “appraiser complaint” will find the right office. Complaints of this type can lead to disciplinary action against the appraiser’s license.