The sales comparison approach estimates property value by comparing the home with similar recently sold properties.
The sales comparison approach estimates property value by comparing the home with similar recently sold properties and adjusting for meaningful differences.
The sales comparison approach matters because it is one of the most common and influential ways residential properties are valued for mortgage lending.
It also matters because borrowers often hear about Comparable Sales (Comps) without understanding the broader valuation method behind them. This approach is the framework that turns those data points into a supported opinion of value.
The term also matters because it helps explain why one nearby sale is never the whole story. Appraisers do not just point to a house down the street and copy the number. They compare multiple sales with the Subject Property and use Appraisal Adjustment logic for meaningful differences in size, condition, location, and features.
Inside that method, the appraiser may compare Gross Living Area, apply Condition Adjustment, Location Adjustment, or Time Adjustment, and then consider each comp’s Adjusted Sale Price.
The method depends on verified, relevant market evidence. Closed sales usually provide the clearest evidence of completed transactions, while current listings and pending or contract sales can help explain competition, supply, and market direction. None should be selected merely because it produces a preferred answer.
Borrowers encounter this approach inside the appraisal process, even if the lender never uses the phrase in a direct conversation.
The term becomes practical when a borrower wants to understand how the appraiser justified the number and why certain nearby sales mattered more than others.
This is especially relevant when a borrower is frustrated by a low value conclusion and wants to understand why the report treated some sales as stronger evidence than others.
Borrowers can read the approach as a chain of reasoning: were the right sales selected, were important differences recognized, were adjustments supported, and did the final reconciliation fit the adjusted indications? A weakness at one step can affect the conclusion even if the arithmetic in the grid is correct.
| Step | What the appraiser is trying to learn |
|---|---|
| Select comps | Which recent sales are most similar to the subject property |
| Verify transactions | Whether prices, concessions, conditions, and property data are reliable |
| Compare differences | Which size, condition, location, rights, or timing differences matter |
| Adjust sale prices | What each comp indicates after market-supported differences are considered |
| Reconcile value | Which indication or range is best supported by the overall evidence |
An adjustment is applied to the comparable sale, not to the subject property. If a comp is inferior on a feature buyers value, an upward adjustment may be made to that comp’s price; if the comp is superior, the adjustment may be downward. The goal is to make each sale more comparable to the subject, not to calculate the renovation cost.
Closed sales provide completed transaction evidence, but current listings and pending sales can add context about competition, supply, and the direction of the market. They do not carry the same certainty: a list price is an asking amount, and a pending contract may close at different terms or fail to close.
The appraiser considers what each data point can reliably show. Current offerings may help explain market conditions, while verified closed sales usually provide the clearest evidence of prices buyers and sellers actually completed.
A 1,800-square-foot home is compared with three verified sales in its market area. One is smaller, one has a renovated kitchen, and one sold six months earlier in a changing market. The appraiser analyzes those differences, makes supported adjustments where market participants appear to recognize them, and then weighs the adjusted indications. That full process is the sales comparison approach.
The sales comparison approach differs from Comparable Sales (Comps) because comps are the actual sales data points, while the sales comparison approach is the valuation method built around those points.
It also differs from the Cost Approach, which focuses on land value and replacement cost rather than on recent sales comparisons.
It also differs from the Income Approach, which focuses on income-producing potential rather than owner-occupied market comparison logic.
It also differs from a price-per-square-foot shortcut. A unit price can summarize a sale, but it may conceal differences in location, condition, site, room utility, quality, and other features that the sales comparison approach analyzes directly.