The home appraisal, from order to report

Somewhere between your accepted offer and your closing, a stranger walks through the house with a clipboard and decides what it's worth — and that number can make or break your loan. The appraisal is one of the most consequential and least understood steps in buying. It exists to protect the lender, not you, but it shapes your deal directly: it sets the ceiling on what the lender will lend. Knowing how the process works removes the mystery and helps you respond calmly when the number surprises you.

Why the appraisal exists

A mortgage is secured by the home, so the lender needs independent confirmation that the property is worth at least what they're lending against it. If you default, the house is their collateral — and they don't want to lend $420,000 against a home worth $400,000. The appraisal is that independent check, performed by a licensed appraiser who has no stake in the deal. It protects the lender from over-lending and, as a side effect, protects you from wildly overpaying relative to comparable sales.

Who orders it, who pays

The lender orders the appraisal, but it's arranged through an independent channel to keep the appraiser at arm's length from anyone with an interest in the value. The buyer typically pays for it, usually a few hundred dollars, often collected upfront or at closing. Crucially, the appraiser works for the lender's confidence in the collateral, not for the buyer or seller — which is why you can't simply request a higher number.

How the appraiser builds the number

• Sales comparison approach: the primary method for homes — the appraiser finds recent sales of comparable properties and adjusts for differences in size, condition, features, and location.
• Condition and features: the appraiser inspects the home's size, layout, updates, and any issues, documenting what supports or reduces value.
• Cost approach: an estimate of what it would cost to rebuild the structure plus land value — more relevant for new or unusual homes.
• The report: a formal document with the value opinion, the comps used, photos, and any conditions (like required repairs for the loan program).

When the number surprises you

1. 1
   A value at or above price

   The common, quiet outcome — your financing proceeds as planned. Nothing to do.

2. 2
   A low appraisal

   The lender caps the loan at the lower value, creating a gap someone must cover. Options: renegotiate the price, split the difference, pay the gap in cash, or walk under an appraisal contingency.

3. 3
   Challenge with a Reconsideration of Value

   If you believe the appraiser missed better comps or made factual errors, your agent can submit a documented request to reconsider. It's free, occasionally works, and costs nothing to try.

4. 4
   Know your contingency

   An appraisal contingency lets you exit with your earnest money if the value comes in low and the gap can't be resolved. Guard that deadline.

The bottom line

The appraisal is an independent, lender-ordered opinion of value that sets the ceiling on your loan. The buyer usually pays, the appraiser works for the lender's confidence, and the number is built mainly from comparable sales. It's not an inspection, it's not an online estimate, and when it comes in low it opens a negotiation rather than ending the deal. Understand the process, keep your appraisal contingency intact, and treat a surprising number as a problem with five standard solutions.