What are comps in real estate?

ReSharpe ResearchLast updated: June 11, 2026

What is comps?

Definition
Comps (comparables) are recently closed, similar properties near a subject property, used to estimate its value or rent. Good comps are recent, nearby and alike in size, beds/baths, condition and type — closed transactions, not active asking prices.

Example

Worked example
To value a 2-bed condo, you might use three nearby 2-bed condos that closed in the last few months at $385k, $400k and $410k — pointing to a value near $400k before adjustments. (Example figures.)

How ReSharpe calculates this

ReSharpe pulls comps from live MLS closed sales and closed leases, weighting recency, proximity and similarity, and shows the comps it used so you can audit them — rather than a black-box estimate. The calibration is detailed on the methodology page.

Related: ARV · Cap rate · GRM

Frequently asked questions

What makes a good comp?
Recency, proximity and similarity — a property that closed recently, nearby, with comparable size, beds/baths, condition and type. The closer on all four, the more reliable the comparison.
Should comps be closed sales or active listings?
Closed transactions are far stronger than active listings: a list price is an asking opinion, while a closed price is what someone actually paid. ReSharpe calibrates on closed sales and closed leases.

See these numbers computed on a real South Florida listing.

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ReSharpe is an analytics tool for licensed real estate professionals. This page is general information — not financial, investment, legal or tax advice. Verify figures and consult licensed professionals before acting.

What are comps in real estate? | ReSharpe