Why It Matters
You'll run into the full appraisal requirement on nearly every purchase loan and most refinances. A licensed or certified appraiser visits the property in person, walks through every room, photographs the condition, measures square footage, and then compares the subject to recently sold comparable properties in the area. The final written report documents everything — condition, quality, location adjustments, and a concluded market value. For single-family homes, expect to pay $400–$700. Multifamily and complex properties run higher. Lenders order the appraisal through an Appraisal Management Company (AMC), and you pay for it at closing even if the deal falls apart. The value that comes back either clears the deal or creates a problem you'll need to negotiate around.
At a Glance
- Components: Interior inspection, exterior inspection, comparable sales analysis, written USPAP-compliant report
- Who orders it: Lender, through an Appraisal Management Company (AMC)
- Who pays: Borrower — $400–$700 for SFR, more for multifamily
- Turnaround: 7–14 business days in most markets
- Standard form: Fannie Mae Form 1004 (SFR), Form 1025 (small multifamily)
- Binding: Lender uses the lower of appraised value or purchase price for LTV calculations
How It Works
The appraiser completes two phases: the site visit and the report. During the site visit, the appraiser inspects the interior room by room — noting condition, quality, updates, deferred maintenance, and any features that add or subtract value. They photograph every room, measure the gross living area, and verify key details like the bedroom and bathroom count. The exterior inspection covers the foundation, roof, siding, windows, and lot. They're looking for anything that affects market value or creates a safety or habitability issue.
Comparable sales are the engine of the valuation. After the inspection, the appraiser pulls recent sales — typically closed within the past six to twelve months, within a defined geographic radius, and reasonably similar in size and property type. They make dollar adjustments for differences: a comp with a garage versus a subject without one, a comp with a finished basement, an extra bathroom. The goal is to bracket the subject property with comps that are slightly inferior and slightly superior, then land on a supported market value conclusion. The BPO and desktop appraisal alternatives skip the interior inspection and some comps analysis — the full appraisal is the standard that everything else is measured against.
The written report is what the lender actually relies on. USPAP compliance means the appraiser must support every value conclusion with data, disclose any departures from standard practice, certify their independence, and sign the report as a licensed professional. The report documents effective age (how old the property appears versus its actual age), condition rating, quality rating, and any functional obsolescence or external obsolescence that affects value. If physical depreciation is significant — deferred maintenance, worn mechanicals, aging roof — the appraiser will note it explicitly and may call for repairs as conditions of the loan.
Lenders use the appraised value as a cap on lending. If you agreed to pay $350,000 but the appraisal comes in at $330,000, your lender will lend against $330,000. You either renegotiate with the seller, cover the gap in cash, or walk away. Appraisal gaps are one of the most common deal-killers in competitive markets.
Real-World Example
Terrence is under contract on a duplex listed at $425,000. His lender orders a full appraisal through an AMC. An appraiser schedules the site visit within four business days and spends about ninety minutes on-site.
The appraiser walks both units, notes that Unit A was renovated in 2022 (updated kitchen, new flooring) while Unit B still has original 1987 finishes. She photographs every room, measures the gross living area at 2,140 square feet, and confirms the lot size and zoning with public records.
Back at her desk, she pulls six comparable duplex sales from the past nine months within a two-mile radius. She makes adjustments for differences in gross rent, condition, size, and location. Two comps with similar renovated-unit premiums support a value near $408,000. Two older, unupdated comps support closer to $390,000. She brackets the subject and concludes a market value of $405,000.
Terrence's lender will calculate his loan-to-value against $405,000 — not the $425,000 purchase price. At 80% LTV, his maximum loan is $324,000. He was planning to borrow $340,000. The $20,000 appraisal gap means he either renegotiates the price, brings more cash to closing, or challenges the appraisal with additional comps.
He calls his agent and they request a reconsideration of value with two additional comps the appraiser didn't use. The appraiser reviews and holds at $405,000. Terrence renegotiates the seller down to $415,000 and makes up the remaining $8,000 gap himself.
Pros & Cons
- Provides the most legally defensible, data-supported property value available — essential for lenders, courts, and dispute resolution
- Interior inspection catches condition issues, deferred maintenance, and safety problems before you're committed
- USPAP compliance means the appraiser must support every conclusion — no guesswork, no conflicts of interest
- Protects buyers from overpaying by giving the lender an independent check on the agreed price
- Costs $400–$700 for SFR and more for multifamily — paid upfront, non-refundable if the deal dies
- Turnaround of 7–14 business days can slow down a time-sensitive closing
- Appraiser is assigned by the AMC, not chosen by the borrower — quality and local knowledge vary
- Appraisal gaps in competitive markets can kill deals or force renegotiation when comparables are scarce
Watch Out
The appraisal is for the lender, not for you. The report belongs to the lender, even though you paid for it. You're entitled to a copy under federal law (ECOA), but the appraiser's client is the bank. The value conclusion is designed to protect the lender's collateral position — it is not an investment analysis, a valuation of future potential, or an estimate of what a renovated version would be worth.
Appraisal conditions can complicate closing timelines. If the appraiser flags health and safety issues — missing handrails, a leaking roof, exposed wiring, peeling lead paint — the lender may require repairs before the loan funds. This can mean re-inspection fees, additional delays, and renegotiation with the seller over who pays for the work. Know before you close whether the property is likely to trigger conditions.
Comps are backward-looking in fast-moving markets. The appraiser is constrained to closed sales, which can lag real-time market conditions by months. In a rapidly appreciating market, a full appraisal may undervalue the property versus what a buyer would actually pay today. In a declining market, it can overvalue relative to current conditions. Understand the market trend before writing an appraisal contingency into your offer.
Ask an Investor
The Takeaway
The full appraisal is the gold standard for property valuation — thorough, USPAP-compliant, and legally defensible. It's required for almost every purchase loan and most refinances, and for good reason: it gives both the lender and the buyer an independent, documented view of what the property is actually worth. Pay attention to what comes back, understand the comps the appraiser used, and have a plan for appraisal gaps before you go under contract — not after.