What a home appraisal is, when your lender orders one, the 17-day contingency window from NWMLS mutual acceptance, how appraisers determine value, and what buyers can do when an appraisal comes in below the purchase price.
Written by Andrew Moran · Loan Officer · NEXA Mortgage | NMLS #1264497
A home appraisal is an independent assessment of a property's market value, completed by a licensed appraiser. Your lender orders it — not you, not your agent — because the lender needs to verify the collateral before funding the loan. Lenders will not lend more than the appraised value of the property; the appraisal sets the ceiling on what they'll finance. The appraiser is selected from an approved panel and has no relationship with the buyer, seller, or agents involved in the transaction. This independence is a regulatory requirement. The buyer pays for the appraisal (typically $500–$900 in Washington), usually at the time it is ordered, but the report belongs to the lender. You are entitled to receive a copy of the completed appraisal under federal law.
Under the standard NWMLS purchase and sale agreement (Form 21), the appraisal contingency window is 17 days from mutual acceptance — the date both buyer and seller have signed the contract. In practice, most lenders order the appraisal within 2–3 business days of mutual acceptance. The appraiser typically schedules a property visit within 3–5 business days after that. After the visit, the written report takes another 3–7 business days to complete. Under normal conditions, buyers receive the appraisal report 10–14 days after mutual acceptance — inside the 17-day contingency window. If the appraisal is delayed (high appraiser demand in competitive seasons, complex property, rural location), you may need to request a contingency extension from the seller. Failure to act within the contingency window — either by removing the contingency or exercising it — can put your earnest money at risk.
Washington appraisers use the sales comparison approach as the primary method for single-family residential properties. They identify three to five recent comparable sales — homes that closed within the past six months, within roughly one mile of the subject property, and with similar size, age, condition, and features. Adjustments are made for differences: a comparable with a two-car garage versus a one-car garage gets a value adjustment; a comparable with 150 fewer square feet is adjusted upward. The final appraised value reflects the appraiser's professional judgment about what the subject property would sell for on the open market. In the Pacific Northwest, appraisers also evaluate condition factors that matter locally: roof age and condition, moisture intrusion, foundation, and deferred maintenance. ADU presence is increasingly recognized as a value contributor in markets where ADU density is high (Seattle, Bellevue, Kirkland). Waterfront and view properties carry meaningful premiums that require comparables from a broader geographic area.
A low appraisal means the lender will only fund up to the appraised value — not the contract price. If you agreed to pay $750,000 but the property appraises at $700,000, your lender will loan against $700,000 (at your agreed loan-to-value ratio). You have four options. First, renegotiate: ask the seller to reduce the price to the appraised value. In a balanced or buyer-leaning market, many sellers agree — they know the next buyer's lender will face the same appraisal result. Second, cover the appraisal gap: pay the $50,000 difference out of pocket in addition to your down payment. This preserves the contract price but increases your cash requirement significantly. Third, request a seller credit: seller keeps the price at $750,000 but credits you $50,000 at closing (applied to closing costs or buydown). Credit math must work within lender guidelines. Fourth, exercise the appraisal contingency: terminate the contract and receive your earnest money back in full. If you waived the contingency, option four is no longer available — the gap comes out of your pocket or the deal dies without earnest money protection.
In competitive PNW markets — particularly Eastside Seattle, Bellevue, and Kirkland during spring — buyers increasingly use appraisal gap clauses or waive the appraisal contingency entirely to make their offers more attractive. An appraisal gap clause commits you to covering any gap between the appraised value and the purchase price up to a specified limit. For example: 'Buyer agrees to cover any appraisal gap up to $50,000.' This tells the seller their deal is protected against a low appraisal up to that threshold, without requiring you to waive the contingency entirely. A full waiver of the appraisal contingency commits you to closing regardless of the appraised value — you're guaranteeing to cover any gap, however large. This is the maximum risk position and should only be taken when you have the cash reserves to close at the contract price even if the appraisal comes in substantially low. In practice, lenders still complete the appraisal even when the buyer waives the contingency — the waiver protects the seller, not the lender. The lender still uses the appraised value as the loan ceiling.
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