How a Home Appraisal Can Make or Break Your Deal

Whether you're buying, selling, or refinancing, the appraisal is one of the most decisive moments in any real estate transaction — and most people don't see it coming.

BuyersSellersReal estate agentsHomeowners

What is a home appraisal?

A home appraisal is an independent, professional assessment of a property's fair market value — what it's actually worth, not what someone is willing to pay for it in the heat of a competitive market. Licensed appraisers examine the home in person, review comparable sales in the area, and factor in condition, location, size, and improvements to arrive at a defensible number.

"The appraisal protects the lender — but understanding it protects you."

Lenders require appraisals because they won't loan more than a property is worth. If a buyer defaults, the lender needs confidence it can recoup the loan amount by selling the home. That's why the appraiser works for the lender, not the buyer or seller — even though the buyer typically pays the fee.

~$350

Average appraisal cost for a single-family home

7–10

Business days for a typical appraisal to be completed

1 in 8

Deals affected by a low appraisal annually

For buyers

What a low appraisal means if you're buying

If the appraisal comes in below the agreed purchase price, you have a problem. Your lender will only finance based on the appraised value — not the contract price. That gap between what you agreed to pay and what the home is worth becomes your problem to solve.

You have three main options: negotiate with the seller to lower the price to the appraised value, cover the difference yourself in cash (called paying the "appraisal gap"), or walk away if your contract includes an appraisal contingency. That last option is exactly why appraisal contingencies exist — and why waiving one in a hot market is a serious financial risk.

For sellers

What a low appraisal means if you're selling

For sellers, a low appraisal is equally disruptive. Your buyer may no longer be able to afford your home — or may use the low number as leverage to renegotiate your price downward. If you refuse to budge and the buyer walks, you're back on the market with a data point that other buyers' agents will find and use against you.

The smarter move: before listing, understand what comparable homes in your area have appraised for — not just what they've sold for. Overpricing relative to appraised values is a fast track to a frustrating transaction.

The path forward

Can you challenge an appraisal?

Yes — and this is where working with an experienced appraiser or agent pays off. If you believe the appraiser missed key comparable sales, made factual errors about the property, or failed to account for recent improvements, you can formally dispute the report. This is called a Reconsideration of Value (ROV). It requires evidence — not emotion — but it does work in cases where the original appraisal was demonstrably flawed.

You can also request a second appraisal, though lenders vary in how easily they allow this.

Pro tips

How to set yourself up for success

For sellers: complete deferred maintenance before the appraisal, provide the appraiser with a list of recent upgrades and their costs, and pull your own comps to make sure the most favorable recent sales are on their radar.

For buyers: always include an appraisal contingency unless you have the financial cushion — and the nerve — to cover a gap. Understand the local market well enough to recognize when a seller's price is dangerously above appraised norms.

For everyone: choose a lender and agent who communicate transparently about appraisal risk before you're under contract. Surprises at appraisal time are almost always avoidable with the right preparation.