Property Valuation & Investment

Appraisal

A professional estimate of a property's market value prepared by a licensed or certified appraiser.

Last updated: Reviewed by CARealestate.com Editorial Team

What Is Appraisal?

A real estate appraisal is a professional, unbiased opinion of a property's market value prepared by a state-licensed or certified appraiser. The appraiser inspects the property, analyzes market data, and applies one or more of three recognized approaches to value: the Sales Comparison Approach (comparing the subject property to similar recently sold properties, called 'comps,' and adjusting for differences), the Cost Approach (estimating the cost to rebuild the improvements plus land value, minus accrued depreciation — most reliable for new construction, special-purpose, and unique properties), and the Income Approach (capitalizing the property's Net Operating Income using a market cap rate — used for income-producing commercial and multifamily properties). Most residential appraisals rely primarily on the Sales Comparison Approach, while commercial appraisals emphasize the Income Approach. Appraisals are required by federally regulated lenders (under FIRREA) for most mortgage transactions to ensure the property's value supports the loan amount. The appraisal report is ordered by the lender through an Appraisal Management Company (AMC) and the report is used by the lender, though the borrower pays the appraisal fee (typically $400–$700 for a standard residential appraisal). The standard residential appraisal form is the URAR (Uniform Residential Appraisal Report, Form 1004).

Appraisal Formulas

ƒ Key Formulas

Sales Comparison Approach
Adjusted Comp Value = Comp Sale Price ± Adjustments
Add value for features the subject has that the comp lacks; subtract for features the comp has that the subject lacks
Cost Approach
Value = Land Value + Replacement Cost − Depreciation
Income Approach
Value = NOI ÷ Cap Rate
Used for income-producing properties

Appraisal in Practice

A buyer agrees to pay $450,000 for a home. The lender orders an appraisal, and the appraiser finds three comparable sales at $425,000, $440,000, and $435,000. After adjusting for differences (an extra bathroom, a larger lot), the appraiser concludes a market value of $430,000. The lender will only base the loan on $430,000 — creating a $20,000 'appraisal gap.' The buyer must cover the gap with additional cash, renegotiate the price, or exercise an appraisal contingency to cancel the contract.

Why Appraisal Matters

The appraisal is often the most consequential step in a real estate transaction after the contract is signed. If the appraisal comes in at or above the purchase price, the deal moves forward smoothly. If it comes in below the purchase price, the buyer faces a gap that must be resolved — often the most stressful negotiation point in the entire transaction. For the exam, appraisal is one of the most heavily tested topics because it connects property valuation, comparable sales, the three approaches to value, LTV calculations, and lender requirements. Understanding appraisals also helps you explain to clients why their home may not be worth what they believe — a core skill for practicing real estate agents.

Key Factors That Affect Appraisal

  • 1.Comparable sales quality is the most important factor in a residential appraisal. Appraisers look for comps that are recent (sold within 3–6 months), nearby (same neighborhood or comparable area), and similar in size, age, condition, and features.
  • 2.Appraiser adjustments correct for differences between comps and the subject. If a comp has a feature the subject lacks (like a pool), the comp's price is adjusted DOWN. If the subject has a feature the comp lacks, the comp's price is adjusted UP. Adjustments are always made to the comparable, never to the subject.
  • 3.Market conditions at the time of the appraisal matter. In a rapidly appreciating market, even recent comps may understate current value. In a declining market, comps may overstate it. Appraisers may apply a time adjustment.
  • 4.Property condition directly affects value. Significant deferred maintenance, functional obsolescence (outdated floor plan), or external obsolescence (noisy highway nearby) will reduce the appraised value.
  • 5.The appraisal must be independent. Under the Dodd-Frank Act and FIRREA, lenders cannot pressure appraisers to hit a specific value. Appraisal Management Companies (AMCs) act as intermediaries to maintain independence.

Common Mistakes With Appraisal

  • Confusing appraisal with home inspection. An appraisal determines market value for the lender. A home inspection evaluates the physical condition of the property for the buyer. They serve different purposes and are performed by different professionals.
  • Thinking the appraiser works for the buyer. The appraisal is ordered by the lender and serves the lender's interest (confirming the property supports the loan). The borrower pays the fee but does not control the process.
  • Believing the appraised value is the 'true' value. The appraised value is one professional's opinion of market value. Market value is what a willing buyer and willing seller agree to. The appraised value and the market price may differ.
  • Making adjustments to the subject instead of the comps. On the exam, adjustments are always made to the comparable properties, never to the subject property. This is a frequently tested concept.
  • Forgetting the Cost Approach. Students often focus on Sales Comparison and Income approaches. The Cost Approach is especially relevant for new construction, special-purpose properties (churches, schools), and unique properties where no good comps exist.

Appraisal vs. Related Metrics

Comps are the data used in the Sales Comparison Approach. The appraisal is the overall valuation process that may use comps along with other approaches.

Comparative Market Analysis (CMA)

A CMA is prepared by a real estate agent to suggest a listing price. An appraisal is prepared by a licensed appraiser for a lender. A CMA is not a substitute for an appraisal in a lending transaction.

Home Inspection

An inspection evaluates physical condition (roof, foundation, plumbing, electrical). An appraisal evaluates market value. Different professionals, different purposes, different reports.

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How Appraisal Appears on the Real Estate Exam

Common question types, tested concepts, and what to watch out for

Know the three approaches to value and when each is most appropriate: Sales Comparison for residential, Cost for new/unique properties, Income for investment properties. Appraisers estimate market value — only the market sets price. An appraisal is NOT the same as a home inspection (appraisals focus on value, inspections focus on condition). The appraiser must be independent and cannot be influenced by any party to the transaction.

Frequently Asked Questions About Appraisal

The three approaches are: (1) Sales Comparison Approach — compares the subject to similar recently sold properties, with adjustments for differences; (2) Cost Approach — estimates the cost to rebuild the improvements, adds land value, and subtracts depreciation; (3) Income Approach — capitalizes the Net Operating Income using a market cap rate. Most residential appraisals rely on the Sales Comparison Approach. Commercial appraisals typically emphasize the Income Approach.

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