How it works in practice
A lender does not lend against a price; it lends against value. When the appraisal comes in under the contract price, the loan shrinks and the difference lands on the buyer. An appraisal contingency gives that buyer a defined window to walk with the deposit intact, ask the seller to cut the price, or split the gap. Most residential contracts pair it with a financing contingency and a specific number of days to deliver notice — miss the deadline and the protection evaporates. Forms, notice requirements, and deposit-release mechanics differ from state to state, so read the contract you are actually signing rather than assuming it matches the last one.
Covering the gap
The math is blunt: whatever the appraisal comes in short, you either negotiate away, walk away from, or write a check for. A shortfall does not reduce your down payment requirement, it stacks on top of it, because the lender applies its loan-to-value limit to the lower of price or value. The loan shrinks by the loan-to-value share of the gap, and that shrinkage lands on you: a $300,000 contract appraised at $290,000 supports $232,000 of financing instead of $240,000, so cash to close moves from $60,000 to $68,000 — about $8,000 more on a $10,000 gap. Investors who underwrite to a fixed cash-to-close figure should price a plausible gap into the deal before they waive anything.
Appraisal gap = contract price − appraised value. The lender sizes the loan off the lower of price or value, so the loan drops by the LTV share of the gap — on an 80% loan, a $10,000 gap costs roughly $8,000 more cash at closing.
Waiving it, and what that costs
In competitive markets buyers waive the appraisal contingency to stand out, sometimes with a cap — buyer will cover up to $15,000 of any shortfall. Waiving converts an unknown into a cash obligation, so only do it when you have the cash and when your own value work supports the price. Run your comparable sales before you waive, not after. If your comps and the appraiser disagree by more than a rounding error, the disagreement usually means your comps were generous, the property has a condition problem the photos hid, or the neighborhood crosses a boundary you did not notice.
The appraisal that matters in BRRRR
Flippers and BRRRR buyers often buy with hard money or cash, where no purchase appraisal happens at all. The appraisal risk simply moves to the back end: the refinance appraisal decides how much capital you recover. That is why after-repair value discipline matters more than the purchase-side contingency. Support the number with recent, close, genuinely similar sales, document the scope of work, and leave margin so a soft appraisal trims profit instead of trapping your down payment in the deal.
Put it to work
Related terms
- ARV (after repair value) — The estimated market value of a property once renovations are complete, based on comparable recently sold homes.
- BRRRR — Buy, Rehab, Rent, Refinance, Repeat — a strategy for recycling one pool of capital across multiple rentals.
- LTV (loan-to-value) — The loan amount divided by the property's value or price.
- Earnest money — The good-faith deposit a buyer puts up when a contract is signed, held by a neutral third party and credited toward the purchase at closing.
- Escrow — A neutral third party holding money or documents until both sides satisfy the conditions of a deal.