Your loan officer calls, or worse, you see it in the portal before anyone calls you: the appraisal came back under your purchase price. Your stomach drops. Here's the short version before we get into it — you have four real options (renegotiate, pay the gap, dispute the number, or walk), the clock is shorter than you'd like, and none of this means the deal is automatically dead.

Wait, what does this actually mean?

A mortgage lender won't lend more than a home is worth, because the home is the collateral. If you agreed to pay $450,000 and the appraiser says it's worth $430,000, your lender will base your loan on $430,000, not $450,000 — full stop, regardless of what you and the seller agreed to. That $20,000 difference is now your problem to solve, one way or another, unless you can get the appraiser's number changed or the seller's price to move. This is what people mean by an "appraisal gap," and it's become common enough that most buyers now hear the term before they ever see one in real life.

How common is it right now? Depends who's counting and when. Homelight cites roughly 10% of appraisals coming in under contract price as a rough historical baseline, though it notes low appraisals became somewhat less frequent in 2025 as price growth cooled and bidding wars eased (Homelight, 2025). A separate analysis of East Coast and Midwest sales in the first half of 2024 found about 8.4% of homes appraised under the sale price, versus 51% appraising over it (Corporate Settlement Solutions, via HousingWire, July 2024). Translation: it's a minority outcome, not the norm — but "minority" still means tens of thousands of buyers a year staring at this exact situation, and it's disproportionately likely if you won a bidding war by offering over asking.

The clock you're actually on

This is the part that catches people off guard: your appraisal contingency deadline is usually 10 to 21 days from when the contract was accepted, not from when the appraisal comes back (ConsumerAffairs). Ordering the appraisal, getting the appraiser out to the property, and getting the report written up can eat a chunk of that window on its own. So by the time you're actually looking at a low number, you may have days — not weeks — to decide what you're doing about it, in writing, before you risk your earnest money.

That "in writing" part matters more than it sounds like it should. If you want to renegotiate, dispute, or cancel, your agent needs to document it and get it to the seller's side before the contingency deadline expires. Verbally telling your agent "I'm not comfortable with this" doesn't protect your deposit — a missed deadline can leave you contractually obligated to close at the original price, or on the hook for your earnest money if you walk without formal notice. If you're getting close to the wire, say so out loud to your agent and lender immediately; this is not a "we'll figure it out later" situation.

Your actual options

1. Ask the seller to lower the price

This is the first move most agents will try, and in a market that's cooled even a little, it works more often than people expect. Your agent brings the appraisal to the listing agent and asks the seller to meet the appraised value, or split the difference. Sellers who are motivated — relocating, already under contract on their next place, tired of the process — will often say yes rather than restart the whole listing clock with a new buyer who might hit the exact same appraisal, because the appraisal report is now attached to the property, not just to your deal (Rocket Mortgage; HomeLight). Sellers who aren't motivated, or who have a backup offer waiting, may just decline and dare you to walk.

2. Bring cash to cover the gap

If the seller won't budge and you still want the house, you can pay the difference between the appraised value and the purchase price out of pocket — the lender will only finance against the appraised value, so the gap has to come from somewhere that isn't the mortgage. Some buyers do this by increasing their down payment; others just write a bigger check at closing. If you wrote an appraisal-gap clause into your offer up front — a clause promising to cover some amount above the appraised value if this happened — this is the moment that clause gets triggered. (We've got a separate piece on how to actually structure one of those clauses before you're in this spot; this article is about what to do once you're already here.) If you didn't include one, you're negotiating this from scratch, under time pressure, which is a worse position to be in — file that away for the next offer.

3. Dispute the appraisal itself

An appraisal isn't gospel — it's one person's professional opinion, built on comparable sales they chose and adjustments they made, and appraisers get it wrong often enough that a formal dispute process exists industry-wide. This is called a reconsideration of value (ROV).

Here's how it actually works: you don't get to argue with the appraiser directly. The request has to go through your lender, and it has to be built on verifiable data, not "we feel like it's worth more." The strongest ROV packets include recently sold comparable properties (not just active listings — sold comps carry far more weight), corrections to factual errors in the report (wrong square footage, wrong bed/bath count, a missed renovation), and documentation of upgrades the appraiser may not have known about (Class Valuation). What an ROV is explicitly not for: simply needing a higher number to make the deal work. Appraisal management companies and lenders can and do reject ROV requests that amount to "please just make this number bigger so we can close" — you need something the appraiser can point to as an actual factual gap.

Timelines vary by lender, but expect the review itself to take several business days on top of whatever time you've already burned getting the report back — which is exactly why this option is in tension with your contingency deadline. Talk to your lender the day the low number comes in about whether an ROV is realistic and whether you need a contingency extension in writing to have time to pursue it.

VA loans work differently, and better, on this front. VA appraisals have a built-in early-warning process called the Tidewater Initiative: if the VA appraiser suspects the value is going to come in low before they finalize the report, they're required to notify the lender and give the buyer's side a roughly 48-hour window to submit additional comps and market data — while the number is still soft, not after it's locked in. That's a meaningfully better shot than a standard post-appraisal ROV, where you're trying to move a number the appraiser has already committed to on paper.

4. Walk away

If you have an active appraisal contingency and the seller won't move and you don't want to (or can't) cover the gap, you can cancel the contract and get your earnest money back — no penalty, assuming you act inside the contingency window and follow the notice requirements in writing. This is the contingency doing exactly the job it exists for. It's not a failure to use it. If the appraisal came in meaningfully under contract price, that's real information about what you were about to pay versus what the home is actually worth — walking away from an overpay isn't the same as losing the house of your dreams, even though it can feel that way in the moment.

5. Split the difference

Not officially one of the "options" any guide lists, but it's how a lot of these actually resolve in practice: seller comes down some, buyer brings some extra cash, both sides avoid restarting from zero. If you're stuck between a seller who won't fully match the appraisal and a gap you can't fully cover, this is usually where your agent should be steering the conversation before anyone threatens to walk.

What this actually feels like

People compare notes on this constantly — homebuyer forums are full of buyers who found out about a low appraisal mid-transaction and had no idea it was even a live possibility until it happened to them. The recurring theme isn't really about the appraisal math — it's about being blindsided by a deadline they didn't know was ticking, and not knowing which of the above options was even on the table until their agent explained it after the fact. If there's one takeaway before you're in this situation: ask your agent and lender, before you're under contract, what the appraisal contingency window actually is and what happens on each side of it. It's a five-minute conversation that turns a panic moment into a checklist.

The bottom line

A low appraisal doesn't automatically kill your deal, but it does force a decision, fast, with real money attached to getting it wrong. Know your contingency deadline the day you go under contract, not the day the number comes back low. If it does come back low: talk to the seller first, know your ROV options and whether the numbers justify pursuing one, know exactly how much cash you're willing to bring if it comes to that, and don't be afraid to walk if the appraisal is telling you something you needed to hear.

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