What Is a CMA in Real Estate? A Complete Guide

A comparative market analysis (CMA) is a report a real estate agent prepares to estimate a home's value by comparing it to recent sales of similar nearby homes, adjusting each comp for differences (square footage, beds and baths, condition, lot) to land on a defensible price range. Sellers use it to set a list price; buyers use it to shape an offer. It is not an appraisal, and it is not the number a website shows you for free. Below, we walk the definition, a worked example with the adjustment math, how pricing is actually built from comps, and how a CMA compares to an appraisal and an automated estimate.

A CMA is an informal, agent-prepared valuation. The agent pulls recent sold homes that are similar to the subject property, adjusts each comp up or down for the ways it is different (a smaller lot, one fewer bath, an outdated kitchen), and combines those adjusted values into a price range. The comps come from the MLS - real, verified sold data - which is what makes an agent's CMA more reliable than a public-record guess or an automated online estimate.

A CMA is not an appraisal. An appraisal is a formal valuation by a licensed appraiser, usually ordered by a lender to approve a loan. A CMA is what sets the list price, shapes an offer, and gives the seller a defensible number to point at.

• The subject property. Address, beds, baths, living area, lot, garage, condition.
• Recent sold comps. At least three homes that have sold recently, nearby, and are similar in size and style.
• Active and pending listings. What competing homes are asking, and what buyers are choosing right now.
• Adjustments. Line-by-line plus or minus per feature that differs from the subject.
• Market conditions. Days on market, sale-to-list ratio, and the direction the market is moving.
• Price recommendation. A range, not a single number, and an explanation of where inside the range to list.

The mechanics are simpler than the math looks. In three steps:

Two useful phrases you will hear: the rule of three (at least three recent, similar, nearby sales; most agents use six to ten to check their work) and the difference between gross and net adjustments (net is the final plus or minus; gross is the sum of absolute values, and if gross is very large the comp is probably not that comparable).

Subject: a 3-bed, 2-bath, 1,800 sq ft updated home on 0.20 acre with a 2-car garage. Three comps from the last 90 days, each adjusted to what they would have sold for if they were the subject home. Follow the arithmetic across the table.

Comp 1 sold for $335,000 with one fewer bath and a slightly smaller lot, so we add value: +$8,000 for the missing bath, +$3,000 for the lot difference. Adjusted, it is worth about $346,000. Comp 2 sold higher at $362,000 but with an extra 250 square feet, so we subtract $12,000 to compare like for like, landing near $350,000. Comp 3 sold at $345,000 in dated condition, so we add $6,000 for the updates the subject has, landing near $351,000. The three adjusted comps cluster tightly between $346,000 and $352,000, and a sensible list price sits around $349,000.

The direction each factor moves value is the same everywhere; the magnitude depends on the local market. Use this as a reading key when a CMA lands on your desk.

The three tools answer different questions.

Automated online estimates are useful for a quick sanity check, but they are blind to condition and updates - which is exactly where the adjustment math above lives.

Most agents provide a CMA free as part of helping you list or buy a home. A standalone analysis from an agent or valuation professional typically runs about $200 to $400, more for complex or unusual properties. If you are getting a CMA from a friend or a distant agent, ask what data they used and whether the comps are MLS sold data - not the same as public records.

You can build a rough range using public sold-home data on Zillow, Redfin, or your county recorder's site. It is a good sanity check. Where DIY falls short is the adjustment step: you can see the sold price of the house down the street, but you do not know that it needed a new roof, that the finished basement is unpermitted, or that the buyer got a $10,000 concession. Agents see that on the MLS. If you are pricing a home to sell, get a professional CMA even if you also run your own.

Four questions to bring to the meeting:

• Are the comps really comparable? Sold in the last 90 days, within a mile, similar size, style and condition.
• How large are the gross adjustments? If any comp needed huge plus-or-minus adjustments, it probably was not a real comp.
• What is the range, and where in it are you listing? Top of range is aspirational; bottom invites a bidding war; middle is safe.
• What is the market trend saying? Recent sales tell you where prices were; active and pending listings tell you where they are going.

Pricing is only the beginning. Once the home lists and goes under contract, the paperwork, key dates, disclosures and reviews behind the deal are what keep it moving from acceptance to closing - and what a brokerage answers for if anything goes wrong. That is where Paperless Pipeline's transaction management software comes in for the agent side. For the wider picture, see real estate transaction management.