Key Takeaways
What a CMA Is — and What It Isn't
A Comparative Market Analysis (CMA) is a valuation report, typically prepared by a real estate agent, that estimates what a home is worth based on how similar nearby properties have recently sold. It is one of the most widely used pricing tools in residential real estate — for both listing decisions and offer strategy.
A CMA is not a formal appraisal. An appraisal is conducted by a licensed appraiser and carries legal and lending weight. A CMA is an analytical estimate grounded in market data, but it carries no regulatory certification. That distinction matters: lenders rely on appraisals, not CMAs. For context on how these two figures can diverge, see our article on appraised value vs. market value.
Still, a well-constructed CMA is genuinely useful. It reflects what actual buyers have been willing to pay under current market conditions — which is ultimately what determines market value. Whether you are a buyer evaluating an offer price or a seller thinking about a list price, learning to read a CMA gives you a more grounded view than an algorithm alone. For a comparison of automated tools, see online home value estimators.
The Three Sections Every CMA Contains
Most CMAs are organized around three property categories. Understanding the role of each is the foundation for reading the document intelligently.
- Recently sold comparables (comps): Properties that have closed — typically within the last three to six months, within roughly a half-mile to one mile — form the backbone of any CMA. Sold prices reflect what the market actually paid, making these the most reliable data points.
- Active listings: Homes currently for sale show what sellers are asking, but asking price is not sale price. Active listings establish a ceiling, not a floor — they indicate competitive supply, not proven demand.
- Expired or withdrawn listings: Properties that failed to sell often reveal a price ceiling the market rejected. These are cautionary data points about where pricing becomes unrealistic.
When reviewing a CMA, weight the sold comps most heavily. Active listings provide market context; expired listings signal pricing pitfalls.
Ask for the Raw Data Behind the CMA
Most agents can share the MLS (Multiple Listing Service) data sheets for each comp in the report. Reviewing these directly lets you verify square footage, sale date, and condition notes rather than relying solely on the agent's summary. You do not need a license to request this information — just ask.
How to Evaluate the Comparable Properties
The quality of a CMA depends entirely on comp selection. Here is what to scrutinize for each comparable property listed:
Check location proximity first
Confirm that each comparable is within a reasonable geographic radius — ideally the same neighborhood or subdivision. A comp from a different school district or across a major arterial road may reflect a meaningfully different buyer pool, even if it looks similar on paper.
Compare the physical characteristics
Look at square footage, bedroom and bathroom count, lot size, garage, and year built for each comp. The closer these figures are to the subject property, the more meaningful the comp. Differences of more than 20% in size or significant structural differences should raise a flag.
Review adjustments made for differences
A well-prepared CMA will include price adjustments to account for meaningful differences between each comp and the subject property. For example, if a comp has a finished basement and the subject does not, the agent should subtract an estimated value for that feature. These adjustments are estimates, not science — but their presence signals analytical rigor.
Note the sale date of each comp
Markets shift. A comp that sold eight months ago in a rising market may overstate value in a cooling one, and vice versa. Prioritize comps sold within the past 90 days when market conditions have been changing. Older comps are still useful for trend context but should be weighted accordingly.
Look at sale price versus list price
The sale-to-list ratio — the percentage of asking price a home actually sold for — reveals negotiating dynamics. A ratio above 100% indicates bidding competition. A ratio below 95% suggests buyer leverage. This figure, read across all comps, tells you more about current market conditions than any single price point.
After working through the steps, revisit your overall read on the subject property. A single outlier comp — perhaps a distressed sale or a home with a major renovation — can skew an average significantly. If you notice a wide price range across comps, ask why rather than simply averaging them. Understanding what buyers weigh when setting an offer can help you interpret those gaps.
Putting the Numbers in Context
A CMA produces a suggested price range, not a single precise number. If the report suggests a value of $385,000–$410,000, that range reflects the uncertainty inherent in comparing distinct properties. A narrower range usually signals strong comp similarity; a wider range signals more variability in the local market.
One metric worth understanding is price per square foot (PPSF). Dividing each comp's sale price by its square footage gives you a normalized basis for comparison. However, PPSF should complement — not replace — holistic evaluation. A smaller home often commands a higher PPSF than a larger one, even in the same neighborhood, because fixed costs are spread across fewer square feet.
Also note the days on market (DOM) figure attached to each comp. A property that sold in under two weeks likely sold near or above asking price in a competitive environment. One that sat for 90 days before closing often sold below asking. DOM reveals demand conditions that raw price alone doesn't capture. For deeper context on how values are tracked over time, see how home values are tracked over time.
Finally, use the CMA as one input, not the only input. Pair it with your knowledge of the neighborhood, current interest rate conditions, and, if you are buying, a clear understanding of your own financial position. For general guidance on the homebuying process, the Buying a Home hub covers the broader decision landscape.
This article is for general informational purposes only and does not constitute professional real estate, financial, or legal advice. Consult a licensed real estate professional for guidance specific to your situation.