Reonomy

Reonomy is an AI-powered commercial real estate intelligence platform built for professionals who need to move faster than the public market allows. Developed by Reonomy, Inc. and later integrated into CoStar Group, the platform aggregates ownership, debt, and transaction data across more than 50 million US properties. It is built for commercial brokers, lenders, investors, and property researchers who need to find off-market opportunities, verify ownership, or build prospecting lists without relying on scattered public records.

How Reonomy works

Reonomy pulls from a national database of commercial property records and layers AI-powered search filters on top of it. Users search by asset class, geography, ownership type, debt status, or transaction history, then narrow results using filter combinations that would take hours to replicate through county assessor lookups. The platform returns ownership contact data, mortgage and lien history, and prior sale records in a single interface. Users can export leads and integrate results into their outreach workflows.

The off-market prospecting function is the core use case. Rather than waiting for a property to hit a listing service, users identify owners who match criteria that suggest motivation to sell, such as aging debt, recent inheritance, or long hold periods, and contact them directly.

Strengths

• 50M+ property database: The national coverage across commercial asset classes is broad enough to support prospecting in most US markets without needing a separate regional data source.
• Ownership and debt data in one place: Combining ownership identity, mortgage records, and transaction history eliminates the need to cross-reference multiple county or title databases.
• AI-powered filters: The search layer lets users build specific criteria-based lists that would otherwise require manual research or a custom data pull.
• Off-market focus: The platform is designed specifically for finding deals before they are publicly listed, which is a genuine competitive advantage for active investors and brokers.

Limitations

• Commercial-only scope: Reonomy does not cover residential properties in a meaningful way. Users researching single-family or small multifamily assets will find the database less useful.
• Data freshness varies by market: Ownership and lien data accuracy depends on how current local county records are. In slower-reporting jurisdictions, records can lag real-world transactions by weeks or months.
• No built-in valuation or deal analysis: The platform surfaces data but does not provide underwriting tools, cap rate estimates, or rent comps. Users still need separate software for deal analysis.
• Contact data completeness: Owner contact information is not always available, particularly for entities held under LLCs with limited disclosure. Users may need to supplement with skip-tracing tools.
• Pricing entry point: At $49 per month, the base tier is accessible, but more complete data access, such as bulk exports or API integrations, typically requires higher-tier plans that are priced significantly above the entry level.

Who it is for

Reonomy is best suited for commercial real estate brokers building prospecting pipelines, investors sourcing off-market deals, and lenders or servicers tracking debt positions across a portfolio. It is also useful for researchers or analysts who need to build property ownership reports without manually pulling public records. Users unfamiliar with commercial real estate data workflows may find the depth of the platform overwhelming at first, but experienced CRE professionals will recognize the time savings immediately. It is not a fit for residential buyers or agents whose work centers on MLS-listed properties.

How it compares

Reonomy occupies a different segment than consumer-facing property search tools. Zillow and Redfin are built around residential listings and buyer-facing search, with public pricing data and map-based browsing. Neither offers the ownership records, debt history, or off-market prospecting capabilities that Reonomy centers on. For someone shopping for a home or tracking residential market trends, Zillow or Redfin are the right tools. For a broker or investor trying to identify who owns a commercial warehouse and whether they have a maturing loan, those platforms offer nothing comparable to what Reonomy provides. The two categories serve different workflows and largely different audiences.