Reonomy is a commercial real estate data platform that aggregates ownership records, sales and debt history, and company data for US properties. Acquired by Altus Group in 2021, it's used mainly for prospecting and finding the people behind LLC-owned buildings.
Reonomy is a commercial real estate data platform built to answer a deceptively hard question: who actually owns this building, and how do I reach them? It pulls together public records, transaction and mortgage history, tenant details, and company data across tens of millions of US commercial properties, and it's best known for cutting through the LLC structures that make CRE ownership so opaque.
Since November 2021, Reonomy has been part of Altus Group, the Toronto-based commercial real estate intelligence firm, which paid roughly $201.5 million for it. The product still runs under its own name as an Altus Group business, and its core job hasn't changed: owner discovery and prospecting for people who make a living finding off-market deals.
Think of it as a search engine over property records. You filter by asset type, location, building or lot size, last sale date, or debt characteristics, and get back a list of properties that match. Click into one and Reonomy shows the ownership chain, sales history, and recorded mortgages. The headline feature is what the company calls true owner identification: instead of stopping at '123 Main Street Holdings LLC,' it links the entity to actual people, often with phone numbers and email addresses attached.
The debt data is quietly the most useful part for prospecting. Filtering for properties whose mortgages mature in the next 12 months surfaces owners who may need to refinance or sell — exactly the conversations brokers and lenders want to start before anyone else does.
Brokers use it to win listings by calling owners before a property hits the market. Acquisition teams use it to build target lists in a specific submarket. Lenders and mortgage brokers work the maturity data. There's also a steady base of commercial service businesses — think roofing or solar contractors — who use it to find and contact the owners of, say, every large flat-roof warehouse in a county.
Despite what some directories say, Reonomy isn't free. It's a paid subscription, typically sold on annual contracts with pricing quoted by the sales team based on seats and data access. You can request a demo, but don't expect a public price list.
We'd still put Reonomy near the top of the list for one specific job: figuring out who owns a commercial building and getting a phone number. The LLC-piercing genuinely saves hours versus digging through county records, and the mortgage-maturity filter is a clever prospecting angle that most competitors copied later. If your business depends on reaching owners first, it earns its keep.
The frustrations are real, though. Contact data accuracy is hit-or-miss — expect a meaningful share of dead numbers and stale emails, especially for smaller owners — and records in rural counties can lag by months. Since the Altus acquisition, the standalone product's pace of change has felt slower, with energy going into Altus's broader analytics stack instead. And the opaque, sales-quoted pricing is a genuine barrier for the one-person shop that only needs a few hundred lookups a year.
