POST-003 The post
The comparative market analysis
Before the sign goes up there is the CMA: the binder of sold houses a listing agent brings to the kitchen table to argue a number.
Read by Marla Teague · checked by Renn Okafor · · 591 words · 3 min
The yard sign's price comes from a document the sign never mentions: the comparative market analysis, the CMA, the binder of sold houses the listing agent carries to the kitchen table. Before anything is bolted to the lawn, the CMA makes the case for a number, and the number the sign eventually carries is the number the binder argued for.
The grammar of the comparable
A CMA speaks a single language: the comp. A comparable sale is an argument by analogy, this house, three streets over, same era, two fewer square feet, sold last March for a number. Three comps say a range; six comps say a price; the chosen comps say who is arguing. The discipline of the form is knowing which sale is evidence and which is weather.
The older agents kept the discipline in a binder with tabs. The newer ones run it as a software-generated report with charts, but the artifact is the same: a document that arrives before the sign and justifies what the sign will say.
The number in the living room
The CMA is presented, not mailed. It is the only document in the practice designed to be argued across a kitchen table, and its real function is diplomatic: to let the seller reach the market's number as if it were their own. A good CMA is built so the conclusion arrives a page before the reader does.
This is why the suggested-price page is always last. Everything before it is preparation, the subject property, the comps, the adjustments, and the price appears only after the case has made itself. The binder is a trial exhibit that never mentions the trial.
The adjustments column
Between the comp's price and the seller's price stands the adjustments column, the CMA's most quietly subjective field. The comp had a garage; add. The comp had a view; subtract. Each line is a judgment wearing the costume of arithmetic, and the total column can move a price tens of thousands without ever looking like an opinion.
Practitioners learn to be honest about the column because the column is where the arguing actually happens. Two agents can hold the same six comps and reach different numbers purely through the adjustments, which is why sellers collect more than one CMA.
The binder that became a button
The CMA's digital descendant is the instant-estimate page, the website form that promised a home value in exchange for an address and an email. The old agent sites were full of them, What Is Your Home Worth, Free Market Analysis, and the form's yield was the same as the binder's: a reason to sit at the kitchen table. The estimate became an algorithm; the follow-up call stayed human.
What the button cannot do is the binder's real work, which is not computing the number but delivering it, in person, across a table where the argument can be had politely.
The binder also preserves something the instant estimate lost: the visit. The CMA requires the agent to see the house, to learn which comp is a comp and which is a fluke, to price the view the algorithm cannot see. The number the sign carries was argued from a kitchen table, and the table is where the practice's real expertise still lives.
