CoStar vs Reonomy: Which Is Better in 2026?
Updated September 2, 2026. Independent editorial; how we research.
CoStar wins for lease comps, valuation, and market research; Reonomy wins for owner discovery and prospecting at a lower entry cost.
| CoStar | Reonomy | |
|---|---|---|
| Starting price | Contact for pricing | Subscription |
| Pricing model | — | Subscription |
| Free trial | No | Yes |
| Best for | Commercial Real Estate Brokers, Investors, Appraisers | Commercial Real Estate Professionals, Property Researchers, Investment Analysts |
| Company size | Small, Mid-Market, Enterprise | Small, Mid-Market, Enterprise |
| Deployment | Cloud, Mobile | Cloud |
| Primary category | Data & Analytics | Data & Analytics |
Our Verdict
CoStar and Reonomy both sell commercial real estate data, but they answer different questions. CoStar maintains the largest CRE database in the United States, with building data, ownership, lease comps, sales transactions, and submarket analytics maintained by a research team of over 1,000 people. Reonomy, an Altus Group business since its 2021 acquisition, is a property intelligence platform. It stitches title, assessor, geospatial, and demographic records into unified property profiles using machine learning, with a focus on ownership and debt.
CoStar wins on depth and defensibility. Appraisers, lenders, and researchers who need lease comps, sales history, and market forecasts they can cite in a report will not find an equivalent in Reonomy, which has limited lease data. CoStar also covers all major property types at submarket granularity. The cost of that depth is premium pricing, annual contracts with limited flexibility, and a learning curve that overwhelms users who only need basic search.
Reonomy wins on prospecting. Its core strength is uncovering the true owner behind LLCs and trusts and surfacing contact details, plus mortgage and debt maturity data that flags likely sellers. Brokers building a call list or investors hunting off-market deals get to a usable target list faster than in CoStar. A free trial lowers the evaluation risk, though pricing is not published. Accuracy varies by market and is strongest in major metros.
Pick CoStar if your work depends on comps, valuation, or market analytics, and the budget supports an enterprise contract. Pick Reonomy if the job is finding and contacting owners. Firms that need both often pair a CoStar seat for research with Reonomy for the prospecting team, since the overlap between the two is smaller than it looks.
CoStar
Reonomy
Frequently Asked Questions
Who owns Reonomy?
Reonomy has been owned by Altus Group, a Canadian real estate data and advisory company, since Altus acquired it in November 2021. It now operates as Reonomy, an Altus Group business.
Does Reonomy have lease comps like CoStar?
Reonomy's lease data is limited compared to CoStar or CompStak. Its strengths are ownership records, contact information, and mortgage and debt maturity data used for prospecting.
Is Reonomy cheaper than CoStar?
Reonomy's pricing is not published, so a direct comparison is not possible. Reonomy does offer a free trial, while CoStar is enterprise-priced on annual contracts.
Can Reonomy replace CoStar?
Only for prospecting and ownership research. Teams that rely on CoStar for lease comps, sales comps, or market analytics will still need CoStar or another comps source.