Is there a cheaper alternative to CoStar for NYC?

For property-level owner and lien research, yes: Hercules is self-serve from $59.99 a month. For leasing and market analytics, CoStar's data has no direct substitute.

Where can I find who owns a commercial building in NYC?

Hercules shows the owner of record on US properties, and on every NYC lot Platinum shows the person behind the LLC with the evidence for each link.

Which NYC commercial data works with AI assistants?

Hercules runs inside Claude and ChatGPT through its MCP server. Check other providers' sites for their AI options.

Best commercial property data for New York City

The short answer

For NYC commercial property, use a market database such as CoStar or CompStak for rents and comps, MSCI Real Capital Analytics for large transactions and capital flows, Crexi for listings, and Hercules for who owns each lot, the person behind the LLC, what is recorded against it and whether it is in foreclosure.

Need	Good fit	Why
Rents, tenants and market analytics	CoStar	Research-team market data
Lease and sale comps	CompStak	Comps contributed by brokers and appraisers
Large transactions and capital flows	MSCI Real Capital Analytics	Global deal and investor database
Commercial listings and auctions	Crexi	Listing marketplace with an intelligence plan
National commercial owners and portfolios	Reonomy	US commercial owner data
Joining your own data for AI and BI	Cherre	Data platform for institutions
Who owns a property, its mortgages, permits and foreclosure stage	Hercules	US property records nationwide, every NYC lot in depth, owner contacts, a CRM and AI access

Most teams combine one market database with one property-level tool. The market tool says what a building should be worth; the property tool says who to call and what stands in the way.

Talk to us about team access

Questions

Is there a cheaper alternative to CoStar for NYC?: For property-level owner and lien research, yes: Hercules is self-serve from $59.99 a month. For leasing and market analytics, CoStar's data has no direct substitute.
Where can I find who owns a commercial building in NYC?: Hercules shows the owner of record on US properties, and on every NYC lot Platinum shows the person behind the LLC with the evidence for each link.
Which NYC commercial data works with AI assistants?: Hercules runs inside Claude and ChatGPT through its MCP server. Check other providers' sites for their AI options.