A real estate appraiser is a state-licensed professional who provides an unbiased estimate of what a property is worth on a specific date, using verifiable market data rather than anyone’s opinion of the home. Most people encounter one because a lender ordered an appraisal for a mortgage, but appraisers also work on property tax appeals, estate settlements, and divorce cases. Federal law requires that appraisals for most mortgage transactions follow the Uniform Standards of Professional Appraisal Practice and be performed by a licensed or certified appraiser.1GovInfo. 12 USC 3339 – Functions of Federal Financial Institutions Regulatory Agencies Relating to Appraisal Standards
What an Appraiser Actually Does
The appraiser’s job is to act as an independent third party with no stake in whether the deal closes. That independence is the whole point. The buyer wants a low price, the seller wants a high one, and the lender needs to know the collateral is worth enough to secure the loan. The appraiser answers that question without rooting for anyone.
An appraisal is not the same thing as the Comparative Market Analysis a real estate agent puts together. A CMA is a marketing tool used to suggest a listing price; it doesn’t carry the legal weight or methodological rigor of a formal appraisal. An appraisal is also not a home inspection. Inspectors focus on whether the roof leaks and the furnace works. Appraisers care about physical condition only to the extent it affects value.
When You’d Hire or Encounter One
The most common trigger is a mortgage. Federal regulations require an appraisal by a state-certified or licensed appraiser for residential mortgage transactions above $400,000 that don’t qualify for sale to Fannie Mae or Freddie Mac under their own standards.2eCFR. 12 CFR Part 323 – Appraisals In practice, nearly every conventional mortgage gets an appraisal regardless of loan amount, because Fannie Mae and Freddie Mac impose their own requirements on the loans they purchase. The lender uses the appraised value to calculate the loan-to-value ratio and confirm the property justifies the amount being borrowed.
Outside of mortgages, appraisals come up when you’re challenging your county’s assessed value in a property tax appeal, when an estate needs to establish a stepped-up basis for inherited real estate, and when divorcing spouses need a neutral valuation to divide property. Sellers occasionally order a pre-listing appraisal to price a home accurately before putting it on the market.
What Happens During the Property Visit
For a traditional appraisal, the appraiser comes to the property. The visit itself usually takes about 30 minutes for a standard single-family home, and an hour or two for larger or unusual properties. The appraiser is looking at the things that drive value: overall condition, the number of bedrooms and bathrooms, total square footage, lot size, construction quality, and any updates or deferred maintenance.
Expect the appraiser to note the condition of the roof, foundation, plumbing, and electrical systems, and to photograph the exterior, the interior rooms, and any features that add or subtract value, such as a finished basement, a pool, or visible damage. For government-backed loans like FHA and USDA mortgages, the appraiser also checks for health and safety issues, including proper drainage, handrails on stairways, and signs of lead paint in older homes.
The appraiser isn’t there to grade your taste. Outdated wallpaper won’t tank the value the way a cracked foundation will. The visit builds a factual record that supports the valuation analysis the appraiser completes back at the desk.
How the Value Is Calculated
Appraisers use three methods for estimating value and settle on whichever combination fits the property. Most residential work leans heavily on one of them.
Sales Comparison Approach
This is the workhorse for residential property. The appraiser pulls recent sales of similar homes nearby, usually at least three, and adjusts each sale price for differences between that property and the one being appraised. If a comparable sold for $350,000 but had an extra bathroom the subject lacks, the comp’s price gets adjusted downward. A comp missing a feature the subject has gets adjusted upward. Adjustments cover square footage, lot size, garage capacity, age, condition, location, and date of sale. In neighborhoods with plenty of recent transactions, the data is strong. In rural areas or markets with unusual properties, finding good comps is the hardest part of the job.
Cost Approach
The cost approach asks what it would cost to buy a similar lot and build the structure from scratch. The appraiser estimates replacement cost, subtracts depreciation for physical wear, outdated design, and external factors like a busy highway nearby, and adds the land value. It works best for new construction and special-purpose properties like churches or schools where comparable sales barely exist.
Income Capitalization Approach
For rental and commercial properties, value is tied to the income the property produces. The appraiser calculates net operating income and divides it by a capitalization rate drawn from market data. The method is essential for investment properties and rarely used for owner-occupied homes.
Reconciliation
After running the applicable approaches, the appraiser doesn’t average them. Reconciliation is a judgment call about which approach produced the most credible result. For a typical suburban home, the sales comparison approach usually gets the most weight because the market data is strongest there, and the appraiser explains the reasoning in the report.
What the Appraisal Report Looks Like
Most residential appraisals are delivered on the Uniform Residential Appraisal Report, commonly called Form 1004. The form is used for traditional appraisals of one-unit properties based on an interior and exterior inspection, and its standardization lets lenders and secondary market participants review valuations consistently.3Fannie Mae. Appraisal Report Forms and Exhibits
The report specifies the effective date of the appraisal, which pins the value estimate to a single point in time. Markets move; an appraisal from six months ago may no longer reflect current conditions. A neighborhood analysis section covers whether prices are rising, stable, or declining and how much demand exists for properties like the subject.
The heart of the report is the sales comparison grid, where each comparable sale is lined up against the subject property and every adjustment is itemized. Unusually large adjustments usually mean good comps were hard to find or the subject is atypical for its market. The report ends with the appraiser’s final opinion of value, which is the figure the lender uses to decide how much it will lend.
Cost and Timeline
A standard single-family residential appraisal typically runs $350 to $600, with prices shifting by market, property complexity, and turnaround time. Rural properties, homes on acreage, and multi-unit buildings cost more because the research is harder and comparable sales are scarcer. Commercial appraisals often run $1,000 to $5,000 or more depending on property type and scope. If you need the report fast, a rush fee of $200 to $400 is common.
In a purchase, the buyer almost always pays, because the appraisal is required by the buyer’s lender. The fee may be collected upfront when the appraisal is ordered or rolled into closing costs. For refinances, the homeowner pays as the party initiating the new loan.
From start to finish, the process usually takes one to three weeks. The visit is quick; the research, analysis, and writing take the rest of the time. FHA and VA loans often take an extra week or two because of additional requirements and a smaller pool of approved appraisers.
Licensing Tiers
Every practicing real estate appraiser must hold a state-issued license or certification, a requirement set by Title XI of the Financial Institutions Reform, Recovery, and Enforcement Act of 1989. Federal agencies decide which categories of transactions require a state-certified versus state-licensed appraiser.4GovInfo. 12 USC 3341 – Functions of Federal Financial Institutions Regulatory Agencies Relating to Appraiser Qualifications There are three tiers:
- Licensed Residential Appraiser. Can appraise non-complex residential properties with one to four units up to $1 million in transaction value, and non-residential properties up to $250,000.
- Certified Residential Appraiser. Can appraise any one-to-four-unit residential property regardless of value or complexity, plus non-residential properties up to $250,000.
- Certified General Appraiser. Can appraise all property types with no limits on value or complexity. This is the credential needed for commercial work.
Transactions valued at $1 million or more specifically require a state-certified appraiser.5eCFR. 12 CFR 34.43 – Appraisals Required; Transactions Requiring a State Certified Appraiser All appraisers, whatever the tier, must follow the Uniform Standards of Professional Appraisal Practice.
Independence Rules You Should Know
Independence isn’t just encouraged; it’s the law. Federal rules bar lenders, loan officers, real estate agents, and borrowers from trying to influence an appraiser’s conclusion through coercion, compensation, or even suggesting a target value.6eCFR. 12 CFR 1026.42 – Valuation Independence Real estate agents are classified as “restricted parties” under Fannie Mae’s Appraiser Independence Requirements because they’re paid on commission and have a financial stake in the deal closing, and they can’t have substantive communications with the appraiser about valuation. No one, including the borrower or loan officer, is allowed to suggest a target value, provide a desired price range, or share comparable sales before the appraiser is engaged.7Fannie Mae. Appraiser Independence Requirements
One exception matters for homeowners: anyone can ask the appraiser to explain the basis for the valuation or to correct factual errors in the report. Pointing out that the appraiser recorded three bedrooms when the house has four is fine. Telling the appraiser the home needs to come in at $450,000 for the deal to work is not.
To enforce this firewall, most lenders use an Appraisal Management Company to handle appraiser selection and assignment, so the loan officer never directly contacts or chooses the appraiser. Federal regulations require AMCs to pick appraisers who are independent of the transaction and qualified for the property type and market.8eCFR. 12 CFR Part 225 Subpart M – Minimum Requirements for Appraisal Management Companies
When the Appraisal Comes In Low
A low appraisal is one of the most stressful moments in a real estate transaction because the lender will only lend against the appraised value, not the contract price. If you agreed to pay $400,000 but the home appraises at $380,000, you have a $20,000 gap to close. Your realistic options:
- Request a Reconsideration of Value. You’re allowed one formal request per appraisal report. This isn’t about disagreeing with the number; you need specific evidence, like comparable sales the appraiser may have missed or factual errors in the report. Your lender handles the submission and must confirm the request meets Fannie Mae’s requirements before forwarding it to the appraiser. If the appraiser finds material deficiencies, they’re required to correct the report. Even if a reported error doesn’t change the final value, the appraiser still updates the report to fix it.9Fannie Mae. Reconsideration of Value (ROV)
- Negotiate a lower price. The appraisal is objective evidence that the agreed price exceeds market value, and many sellers will come down rather than risk the deal falling apart.
- Split the difference. The seller drops the price somewhat, and the buyer brings extra cash to closing to cover the rest.
- Cover the gap out of pocket. The buyer pays the difference on top of the down payment and closing costs. Using funds earmarked for the down payment to cover the gap reduces equity and can push the loan-to-value ratio high enough to trigger private mortgage insurance.
- Walk away. If your purchase contract includes an appraisal contingency, you can cancel the deal and keep your earnest money. That’s exactly what the contingency exists to protect.
Understand the appraisal contingency before you reach this point. It’s a clause in the purchase agreement that lets you back out without penalty if the home appraises for less than the purchase price. Waiving it, which sellers in competitive markets sometimes pressure buyers to do, means you’re on the hook for the gap or you risk losing your deposit if you walk away.