How to Challenge a Low Home Appraisal and Win in 2025

TL;DR: You challenge a low home appraisal by requesting a formal Reconsideration of Value (ROV) from the lender within 5-10 business days, backed by 3-5 stronger comparable sales the appraiser missed or misused. Roughly 8% of appraisals come in under contract price nationally, and sellers or agents who submit a documented rebuttal see the value adjusted upward in an estimated 30-40% of cases. If the ROV fails, your fallback options are a second appraisal, renegotiating price, or the buyer covering the gap in cash.

_Last reviewed: August 2026 · 8 min read_

A low appraisal can stall a closing you thought was locked in, and the clock is ticking on your contract deadline. The good news: lenders have a formal process for disputing a number, and it works often enough to be worth the two or three hours it takes to build a case.

Okoniq Property Hub helps sellers keep every comp, repair receipt, and appraisal document organized in one place so a rebuttal can go out the same day the report lands, not a week later.

What actually causes a low appraisal?

Most low appraisals trace back to thin comps, not a flawed property. Appraisers are required to use sales from the last 90 days within roughly a 1-mile radius when possible, and in a market with few recent closings, they sometimes reach further out or lean on older, lower-priced sales that don't reflect current demand.

Other common culprits: the appraiser missed a recent renovation because it wasn't listed on the MLS photos, they used a distressed or foreclosure sale as a comp without adjusting for condition, or they simply made a math error on square footage or lot size. In hot markets, appraisals also lag because they're built on closed sales, not the pending offers that are actually setting the new price ceiling. If your home has structural quirks, it helps to rule those out early. If your foundation shows signs of movement, an appraiser will flag it, and fixing it before the appraisal matters more than arguing after.

How do you request a Reconsideration of Value?

You request an ROV in writing through your loan officer or agent, addressed to the lender, not the appraiser directly, since appraisers generally can't be contacted about value once the report is filed. Most lenders give you a window of 5 to 10 business days after the report is delivered, so speed matters.

Your rebuttal should include three things: a cover letter stating exactly which comps you're disputing and why, a list of 3-5 alternate comparable sales that closed within the last 90 days and are closer in size, condition, or location than the ones used, and any factual errors in the report itself, like wrong square footage, an unmentioned renovation, or a comp listed as a similar property that was actually a short sale. Agents who do this well typically pull comps from the MLS the same day the report drops, since the strongest ROVs go out within 48 hours. Understanding what happens when a number comes in short is also worth reading before you file, since it shapes what leverage you actually have in the negotiation. See appraisal gaps explained for the full breakdown of what buyers and sellers each owe at that point.

What if the reconsideration doesn't work?

If the lender denies the ROV, you have three realistic paths left: order a second appraisal, renegotiate the price, or have the buyer bring extra cash to close the gap. A second appraisal costs the buyer roughly $400 to $700 out of pocket and takes 5-10 more days, and lenders won't always approve one unless the first report had a clear defect.

Renegotiating is often faster. If the appraisal came in $15,000 low on a $400,000 contract, splitting the difference so the buyer pays part in cash and the seller drops price by $7,500 keeps most deals alive without restarting the clock. Whether you're the one absorbing the shortfall depends heavily on what your appraisal contingency actually says, since some contracts let the buyer walk with a full deposit refund if the gap isn't resolved, and others don't.

| Option | Cost/Time | Best When | |---|---|---| | Reconsideration of Value | Free, 5-10 business days | Comps were weak or facts were wrong | | Second appraisal | $400-$700, 5-10 days | First report had a clear methodology flaw | | Renegotiate price/gap split | Immediate | Both sides want the deal to survive |

Should you get a second opinion before you even fight it?

Sometimes the fastest path is skipping the fight and pulling your own comps first, before deciding an ROV is worth the effort. Ask your agent to run a quick CMA using the same 90-day, same-radius rules an appraiser uses, since if your own numbers land close to the appraisal, a rebuttal probably won't move the needle much.

This step also matters if you're deciding between repairing something versus cutting the price, because a $3,000 fix that removes a red flag from the report can sometimes do more than a comps argument ever will. And if you listed aggressively to begin with, revisit your original pricing strategy before assuming the appraiser is wrong. Sometimes the appraisal is the accurate number, and the list price was the outlier.

What should you do differently before you list, so this doesn't happen again?

Get ahead of it by giving the appraiser everything upfront instead of reacting after the fact. Prepare a one-page improvement list with dates and costs for any renovation done in the last 5 years, since a $25,000 kitchen remodel from 2022 won't show up in tax records or MLS photos unless you hand it over directly.

Pull your own set of 3-5 comps before the appraisal appointment and leave them with your agent to share, along with a note about any pending sales in the neighborhood that haven't closed yet. Timing also plays a role: listing during the best time of year to sell tends to mean more recent, comparable closings for the appraiser to draw from, which lowers the odds of a stale-comps problem in the first place.

FAQ

How often do home appraisals come in low?

National data puts it around 8% of transactions, though the rate climbs closer to 15-20% in fast-moving markets where pending sales are outpacing closed comps.

Can you dispute an appraisal directly with the appraiser?

No, in most cases federal appraisal independence rules bar buyers, sellers, and agents from contacting the appraiser directly after the report is filed. All disputes go through the lender via a formal Reconsideration of Value request.

How long does a Reconsideration of Value take?

Most lenders respond within 5 to 10 business days of receiving your rebuttal, though some move faster if the dispute involves a clear factual error like wrong square footage.

Who pays for a second appraisal?

The buyer typically covers it, usually $400 to $700, since it's tied to their loan file, though sellers sometimes offer to split the cost to keep a deal from falling apart.

Does a low appraisal always kill the sale?

No. Many deals survive through a price renegotiation or the buyer covering part of the gap in cash, especially when both sides have already invested time and don't want to restart the process.

This is educational information, not financial or legal advice. Consult a licensed appraiser, your real estate agent, or a real estate attorney for guidance specific to your contract and state.