CompNinja
How it works

A report you can hand to someone who will argue with it.

Every CompNinja report answers the question and then shows its work: a value range for the subject, the comps behind it, and where each comp came from. Here is exactly how that gets built.

Free
Every report
3–6
Cited comps per report
~40s
Search to report
100%
Sources disclosed
The Report

One page that answers, then proves.

A value range for the subject, what's driving prices in the market, and the comp table behind both — with a confidence badge on every source.

Sample report · Industrial · Rancho Cucamonga, CAIllustrative
Estimated value
$4.6M–$5.3M
$212–$245 / SF · 21,600 SF (public record)
What's driving prices
Inland Empire vacancy tightening near the I-15 corridor
Sub-25K SF buildings trade at a premium — scarce supply
Rate environment holding cap rates near 5.9–6.4%
AddressSoldSF$/SFSource
9020 Center AveMay 2621,400$238Verified · via Ridgeline CRE
11215 4th StMar 2618,750$226Public record
8933 Utica AveFeb 2624,100$219Listing
10722 Arrow RouteDec 2519,900$214Public record
12190 6th StNov 2526,300$208Listing
Verified confirmed by a local broker Public record county recorder / assessor Listing active or closed listing Badges under-claim, never over-claim.
Method

How a report comes together.

I.

Search live

Public records, listings, and news are searched at request time — not read from a stale database.

II.

Cite everything

Each comp carries its source and a confidence badge. Unknown provenance is labeled an estimate, never dressed up.

III.

Value the subject

Building size comes from public records; the range comes from sale comps. Your price and NOI stay in your browser.

Questions

FAQ

What is a comp in commercial real estate?

A comp (short for comparable) is a recent sale or lease of a property similar to yours. Brokers, lenders, and appraisers use comps to estimate what a property is worth or what rent it can command.

How much does a comp report cost?

Nothing. Reports are free and there is no subscription. We only ask for your contact details when you export a report, so we can follow up about your property and market.

Where does the data come from?

Every search runs live against public listings, property records, and brokerage announcements, and every comp is labeled by source: Verified (submitted by a local broker and reviewed by our team), Public record, Listing, News, or Estimate, so you always know how much weight to give it.

Can I find out what my building is worth?

Yes. Enter your address and property type. We pull the building's square footage from public records automatically (you can override it), and every report opens with an estimated value range based on recent comparable sales. Add NOI for an income-approach cross-check. It's an automated estimate, not an appraisal. For a real opinion of value we'll connect you with a licensed local broker, free.

What property types are covered?

Industrial, office, retail, multifamily, land, and residential. Each type reports the specifics its buyers price on: clear height and dock doors for industrial, building class for office, center type and anchor tenant for retail, unit count and price per unit for multifamily, acreage and zoning for land, and bedroom and bathroom counts for residential.

How accurate are the reports?

Comps are a starting point, not an appraisal. The data comes from public sources and can contain errors, so verify anything important before relying on it. For a true opinion of value, talk to a licensed local broker. Reach out and we can connect you with one.

See it on your own building.

Enter an address and property type — the report takes about a minute and costs nothing.

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