Can You Dispute a Low Home Appraisal and How Does That Work?

Finding out your home appraises below sale price is one of the more stressful moments in any real estate transaction. Whether you're a buyer watching your financing hang in the balance or a seller wondering if your deal is about to fall apart, a low appraisal doesn't automatically mean the end of the road. There is a formal process for challenging an appraisal result — and understanding how it works can help you decide whether it's worth pursuing. This post walks you through that process from start to finish.

What Happens When a Home Appraises Below Sale Price

When a home appraises below sale price, the gap between the appraised value and the agreed purchase price creates what's commonly called an appraisal gap. This matters because mortgage lenders base their loan amount on the appraised value — not the contract price. If a home is under contract for $500,000 but appraises at $470,000, the lender will typically only finance based on the $470,000 figure.

That $30,000 difference has to be accounted for somehow. Buyers may need to bring extra cash to closing, renegotiate the sale price with the seller, or walk away if the contract includes an appraisal contingency. Sellers, on the other hand, face the choice of lowering the price, negotiating a middle ground, or risking the deal collapsing entirely.

According to the National Association of Realtors, appraisal issues account for a meaningful share of delayed and cancelled real estate contracts each year — making this one of the more common hurdles in the buying and selling process. Before accepting a low appraisal result as final, it's worth knowing that buyers and sellers have the option to formally challenge it.

The Formal Process: Reconsideration of Value

The official channel for disputing a low appraisal is called a Reconsideration of Value (ROV). This is a written request submitted to the appraiser — typically through the lender — asking them to review their findings based on new or overlooked information. It is not an emotional appeal or a request to simply raise the number. It is a structured, evidence-based process.

Here's how the ROV process generally works:

1. The request is submitted through the lender. In most cases, buyers or their agents cannot contact the appraiser directly. The request goes through the lender or the Appraisal Management Company (AMC) handling the order.
2. Supporting documentation is submitted with the request. This is the backbone of your dispute. Without solid evidence, the appraiser has no reason to change their conclusion.
3. The appraiser reviews the submission. They are required to consider the new information, but they are not obligated to change their value.
4. A written response is issued. The appraiser will either revise the appraisal, maintain their original value, or clarify how they addressed the evidence provided.
5. If the ROV is unsuccessful, a second appraisal may be requested. This is less common and depends on the lender's policies, but it is an option in some situations.

Turnaround times vary, but most ROV responses come back within 5 to 10 business days. Keep in mind that this can affect closing timelines, so it's important to move quickly if you decide to pursue this route.

What Counts as Valid Grounds for a Dispute

Not every disagreement with an appraisal qualifies as a valid dispute. Appraisers are trained professionals following established methodology, and simply feeling that a value is too low won't move the needle. Valid grounds typically fall into a few clear categories:

Incorrect or Missing Property Information

If the appraisal report contains factual errors — wrong square footage, an incorrect bedroom count, missing upgrades like a recently renovated kitchen or a finished basement — these are legitimate grounds for a reconsideration. Even small inaccuracies can affect the final value by tens of thousands of dollars in some markets.

Overlooked or Superior Comparable Sales

Appraisers select comparable sales (often called "comps") to benchmark the subject property's value. If there are recent sales of similar homes in the same neighborhood that weren't included — particularly sales that closed within the last 90 days and support a higher value — that's meaningful information for an ROV. Your real estate agent can often help identify these overlooked comps.

Market Condition Adjustments

In a fast-moving market where values are rising quickly, an appraiser using sales from four to six months ago may be working with data that doesn't reflect current conditions. Documenting active market trends with recent sale evidence can sometimes support a value adjustment.

How to Gather Supporting Evidence

A strong ROV submission is organized, factual, and focused. Here's what to pull together before submitting:

• A copy of the appraisal report — Review it carefully for errors in property details, room counts, lot size, or condition ratings.
• Three to five comparable sales — Work with your real estate agent to find recent closed sales of similar homes within a reasonable geographic radius. The closer in time, size, and location to the subject property, the more persuasive they are.
• Documentation of improvements — Permits, contractor invoices, and before-and-after photos of renovations all help establish value for upgrades that may have been underweighted.
• A written summary of your case — Keep it professional, clear, and factual. Point specifically to the line items in the report you believe are inaccurate and explain why each comparable you've identified is relevant.

Avoid submitting vague requests or emotional language. Appraisers respond to data, not sentiment. The more specific and well-documented your submission, the better its chances of being taken seriously.

Realistic Success Rates and What to Expect

It's important to go into this process with balanced expectations. Appraisal reconsiderations do sometimes result in revised values — but they don't always succeed. Industry professionals generally estimate that a meaningful percentage of ROV requests result in some upward adjustment, but many appraisers maintain their original conclusions when the evidence doesn't strongly support a change.

The most successful disputes tend to involve clear factual errors or genuinely overlooked comparable sales — not borderline cases where the appraiser simply weighed the data differently. If your dispute falls into the latter category, the outcome is harder to predict.

If the ROV doesn't go the way you hoped, there are still paths forward. Buyers and sellers can renegotiate the purchase price, split the appraisal gap, or in some cases request a second appraisal through the lender. Understanding your options around seller concessions or repair credits — like the choices explored in Seller Repair vs Closing Credit After a Low Appraisal: Which Is Better? — can help you keep the transaction moving even when the appraisal dispute doesn't fully resolve the gap.

Frequently Asked Questions

How long does an appraisal reconsideration of value take?

Most ROV responses come back within 5 to 10 business days, though timelines can vary depending on the lender, the Appraisal Management Company, and the appraiser's workload. Because this adds time to the transaction, it's smart to start the process as soon as possible after receiving a low appraisal report.

Can a seller request an appraisal dispute, or is that only for buyers?

The formal ROV request is typically submitted through the buyer's lender since the appraisal was ordered to support the mortgage. However, sellers can and should work with their listing agent to gather supporting comps and property documentation that the buyer can include in their submission. Both parties have an interest in a fair result.

What happens if the reconsideration of value is denied?

If the appraiser maintains their original value, your options include renegotiating the sale price with the other party, making up the appraisal gap with additional funds if you're the buyer, requesting a second appraisal (subject to lender approval), or in some cases, walking away if an appraisal contingency is in place.

Can you challenge an appraisal just because you think it's too low?

A general feeling that the value is wrong is not sufficient grounds for a formal dispute. Appraisers follow established guidelines, and a reconsideration of value requires specific, documented evidence — such as factual errors in the report or comparable sales that were overlooked. Without supporting data, the appraiser has no basis to revise their conclusion.

Moving Forward After a Low Appraisal

A home that appraises below sale price can feel like a setback, but it's a navigable one. The reconsideration of value process exists precisely because appraisals aren't infallible — data gets missed, properties get mischaracterized, and markets move faster than any single report can fully capture. With the right documentation and a clear, factual case, it's possible to move the needle. And even when a dispute doesn't fully close the gap, knowing your options helps you make thoughtful decisions about how to keep your transaction on track.

For a broader look at what to expect throughout this stage of the buying or selling journey, the Complete Guide to the Home Appraisal Process for Buyers and Sellers covers everything from how appraisals are ordered to what happens after the report comes in.