Before listing a home or making an offer, every buyer and seller should understand what a Comparative Market Analysis is — and how to interpret one.
What Is a CMA?
A Comparative Market Analysis (CMA) is a data-driven estimate of a property's market value based on an analysis of recently sold properties (called "comparables" or "comps") that are similar to the subject property. CMAs are prepared by real estate agents and brokers and are provided free of charge to clients.
A CMA is not the same as an appraisal. An appraisal is a formal valuation performed by a licensed, independent appraiser — required by mortgage lenders. A CMA is a professional estimate; an appraisal is a legally recognized value opinion. Both are based on similar methodologies, but only a licensed appraiser can produce a certified appraisal.
How a CMA Is Prepared
1. Select Comparable Properties
The agent selects 3–5 recently sold properties (comps) that are similar to the subject property in:
- Location (same neighborhood or nearby; same school zone)
- Size (square footage — typically within 10–15%)
- Property type (single-family home vs. condo, etc.)
- Bedrooms and bathrooms
- Age and construction type
- Recency of sale (typically within 3–6 months)
2. Make Adjustments
No two properties are identical. The agent makes value adjustments for differences between the comp and the subject property. For example, if the subject has a pool and the comp doesn't, the agent adds value to the comp price to reflect the pool's contribution. Common adjustments include pool, garage, lot size, condition, and location quality.
3. Analyze Active and Pending Listings
In addition to sold properties, the CMA looks at currently active listings (your competition, if selling) and pending sales (contracts not yet closed). Active listings establish the upper price ceiling; sold properties are the most reliable data.
4. Arrive at an Opinion of Value
After adjustments, the agent calculates a value range and suggests a listing price or offer price based on current market conditions — whether it's a buyer's or seller's market, days on market, and absorption rates.
What a CMA Is Used For
- Pricing a listing: Setting the right list price is the single most important decision a seller makes. Overpricing leads to fewer showings and eventually price reductions; underpricing leaves money on the table.
- Making an offer: Buyers use CMAs to understand what fair market value is before writing an offer — especially important in multiple-offer situations.
- Negotiating repairs or credits: If inspection reveals issues that lower value, knowing market value helps quantify a reasonable credit request.
CMA Limitations
A CMA is only as good as the data available. In neighborhoods with few recent sales, it can be difficult to find true comparables. Unique properties — unusual architecture, very large lots, waterfront — are harder to value with comps and may benefit from a formal appraisal.