Buyer & market
A comparative market analysis you can defend in five minutes.
CMA Builder pulls comparable sales within a half mile and a 90-day window, weights them against your subject property, and returns a recommended price band with the reasoning attached.
Updated June 2026 · one of 17 tools in the RealtrAI workspace
The challenge
- !Hand-pulling comps from the MLS and rebuilding an adjustment grid in a spreadsheet for every listing
- !Sellers who anchor on a Zestimate or a neighbor's asking price instead of closed sales
- !Price bands that fall apart the moment a seller asks how you got the number
- !Stale comps that miss a market that turned in the last 60 days
- !No clean one-pager to drop into the listing presentation
What it does
- ✓Auto-pulls comparable closed sales within a half mile and a 90-day window, with both radius and lookback adjustable
- ✓Adjusts each comp for living area, bed and bath count, lot size, condition, and time-on-market differences
- ✓Returns a price band with a midpoint instead of a single fragile number
- ✓Shows the full adjustment grid so every dollar of difference is traceable
- ✓Lets you pin or exclude comps based on local knowledge the data does not capture
- ✓Writes a plain-language rationale a seller can read without a real estate license
Inside the tool
Every capability, included.
How the band is built
Every number is traceable
CMA Builder does not hand you a single price and ask you to trust it. It returns a band, a midpoint, and the grid behind both. When a seller asks how you reached the number, you scroll to the comp that drove it and point at the adjustment.
Half mile, 90 days, by default
Comps are pulled inside a half-mile radius and a rolling 90-day window so the analysis reflects the market as it stands now, not last spring.
Line-item adjustments
Each comp is adjusted for living area, beds, baths, lot size, condition, and time on market, with every adjustment shown as its own line.
A band, not a guess
The output is a defensible price range with a midpoint, which gives you and the seller room to position above or below market with intent.
Your judgment stays in charge
Pin what the data misses
Data does not know that the comp three doors down backs to a freeway, or that yours was fully renovated last month. You do. Pin the comps you trust, exclude the ones you do not, and the band recalculates around your local knowledge.
Pin and exclude
Force a comp into the set or remove one that the radius caught but the market would never compare to.
Override the window
Widen the radius or extend the lookback in a thin market where 90 days of closes is not enough to build a credible set.
You own the output
CMA Builder produces analysis support. You review it, you sign it, and the output belongs to you under per-tenant data isolation.
Connected across the workspace
One source of truth.
Listing Presentation
Drop the CMA price band and adjustment summary straight into the listing presentation so your pricing story and your pitch are one document.
Listing Writer
Once the band is set and the seller signs, hand the property details to Listing Writer to draft the listing copy in your chosen tone.
Market Update Email
Reuse the same comps and 90-day window to send sellers and buyers a market update that matches the pricing logic they already saw.
How it works
Adopting cma builder.
Enter the subject property
Address, living area, beds and baths, lot size, and condition. A minute of input is all it takes.
Comps auto-pull
The tool gathers comparable closed sales inside a half mile and 90 days, then adjusts each one against your subject.
Review the band and grid
You get a recommended price band, a midpoint, and a full adjustment grid in about four seconds.
Tune and export
Pin or exclude comps, adjust the radius or window if you need to, then export the one-page summary for your listing presentation.
FAQ
Questions, answered.
Does CMA Builder replace an appraisal?
No. It produces a comparative market analysis to support a licensed professional. It does not appraise property and does not replace a licensed appraiser. You review and own every output.
Can I change the comp radius or the time window?
Yes. The defaults are a half-mile radius and a 90-day window, and you can widen or narrow both. In thin or fast-moving markets, an adjustable window is the difference between a credible set and a guess.
What if the auto-pulled comps include a sale that does not really compare?
Exclude it. You can pin comps you trust and drop ones you do not, and the price band recalculates around your selections.
Why a price band instead of a single number?
A single number invites an argument. A band with a midpoint and a visible adjustment grid lets you position the listing with intent and defend the reasoning when a seller pushes back.
How fast is it?
Generations average 4.2 seconds. You can run several pricing scenarios for a seller in the time it used to take to pull comps for one.
Get started
Try CMA Builder free for seven days.
It is one of 17 specialist tools in your RealtrAI workspace. No credit card.