The mortgage appraisal exists for one reason: the lender wants independent verification that the home is worth at least what they're lending against it. If the appraiser values the home below your purchase price, the lender will only fund based on the appraised value — leaving you to cover the gap or renegotiate. About 7–10% of appraisals come in low, so it's worth understanding the options before it happens.
Why the Lender Orders It
Your loan-to-value (LTV) ratio is calculated against the *lower* of the purchase price or the appraised value. If you're putting 10% down on a $400k purchase but the home appraises at $380k, the lender now uses $380k as the value. Your $360k loan against a $380k appraisal is 95% LTV — over their cutoff. They'll only lend $342k (90% of $380k), leaving you $18k short.
What the Appraiser Looks At
- Recently sold comparable properties (3–5 within 1 mile, sold in last 6 months)
- Square footage, bedroom and bathroom counts
- Lot size and orientation
- Year built and overall condition
- Updates and renovations (kitchens, baths, systems)
- Functional issues (unusual layouts, deferred maintenance)
Your Options If It Comes in Low
| Option | Trade-Off |
|---|---|
| Negotiate the price down | Best outcome — seller takes the haircut |
| Bring more cash to closing | You cover the gap; reduces your savings |
| Split the difference with the seller | Common compromise; each side moves halfway |
| Challenge the appraisal | 20–30% success rate; needs strong comp evidence |
| Walk away (with appraisal contingency) | Earnest money returned; deal dies |
Challenging an Appraisal
You (through your lender) can submit a "reconsideration of value" or ROV request. To succeed, you need strong comparable sales the appraiser missed — better matches in size, condition, or recency. Vague disagreement doesn't work; documented better comps sometimes do. Plan on a 5–10 business day turnaround for a decision.
An appraisal contingency lets you walk away if the appraisal comes in too low — typically with full earnest money refund. In competitive markets, buyers waive this contingency to win. Doing so means if the appraisal disappoints, you either bring more cash or lose the earnest deposit. Only waive when you have cash on the sidelines.
A low appraisal isn't a deal-killer if you have options. The best strategy: keep your appraisal contingency in place when possible, and bring enough reserves to cover a 5% gap if needed.
