How the appraisal contingency works, and what waiving it actually gives up

The appraisal contingency lets a homebuyer renegotiate or walk away with earnest money intact if the home doesn't appraise for at least the contract price. It exists because mortgage lenders won't fund a loan that exceeds the property's appraised value, so without the contingency, a low appraisal forces the buyer to either bring extra cash to closing or default on the contract.1

Most home purchase contracts financed with a mortgage include three standard contingencies: financing, inspection, and appraisal. Each gives the buyer a contractual escape hatch if a specific condition isn't met. The appraisal contingency is often the one buyers understand least, and increasingly the one they're being asked to give up.

An appraisal contingency, in general terms, makes the contract conditional on the property appraising at or above the agreed purchase price. If the lender's appraiser comes in below that number, the contingency typically gives the buyer the right to renegotiate, walk away with their deposit, or proceed at the original price by bringing additional cash to closing. Without the contingency, the buyer is generally on the hook for the gap regardless of what the appraisal says.

This matters because, in a competitive market, sellers often receive offers above the listing price, sometimes substantially above. If the property doesn't appraise at the offer price, the lender will only finance up to the appraised value, and the difference (the "appraisal gap") has to come from somewhere. The contingency determines whose problem that gap is.

What waiving the contingency gives up

Waiving the appraisal contingency means a buyer agrees to proceed with the purchase at the contract price even if the appraisal comes in lower. In practice, this means the buyer commits to making up the gap in cash at closing, or finding alternative financing.2 Some buyers structure partial waivers (covering up to a stated dollar gap) to balance competitiveness with downside protection.

The decision to waive, partially waive, or maintain the contingency depends on factors specific to the buyer and transaction: cash reserves, alternative financing options, comfort with appraisal risk, and the competitive dynamics of the specific offer situation. These are exactly the factors a real estate attorney and an experienced buyer's agent are positioned to help evaluate.

What a partial waiver looks like

A partial appraisal waiver caps the buyer's exposure at a specific dollar amount. The contract might say, in plain English: "Buyer agrees to make up an appraisal gap of up to $25,000 in cash at closing. If the appraisal comes in more than $25,000 below the contract price, the contingency is preserved and buyer may renegotiate or terminate."

The cap is often set in proportion to the buyer's reserves and risk tolerance. A buyer with $80,000 of liquid funds beyond their down payment might be comfortable capping at $25,000; a buyer with thinner reserves might cap at $5,000 or hold the full contingency. The specific wording matters, "appraisal gap coverage" provisions vary substantially by jurisdiction and by the contract form involved.3

What an appraisal isn't

It helps to understand what an appraisal is not. The appraisal is the lender's risk-management tool, not a buyer's quality assessment. The appraiser estimates market value to verify the loan-to-value ratio the lender is taking on. The number is not a comment on whether the buyer is overpaying for the home in absolute terms, only on whether the lender is willing to finance against that value.

This matters because a buyer who genuinely wants the property at the contract price (because it suits them, because the market is moving, because they're competing) may rationally accept a low appraisal and bring extra cash. The appraisal isn't a verdict on the wisdom of the purchase; it's a verdict on the lender's collateral position. Distinguishing between the two often clarifies the decision about whether to waive.

How appraisal disputes work when they happen

If an appraisal comes in low and the contingency is in place, the buyer typically has several options that depend on the specific contract. The buyer may request a reconsideration of value from the appraiser (with comparable sales the appraiser may not have considered), renegotiate the purchase price with the seller, walk away under the contingency, or proceed at the original price by bringing the difference in cash. The path forward and the timing involved vary by contract and by lender; a real estate attorney can advise on what the contract actually allows in any specific case.