RegWatch vs. CoStar

CoStar Group is the largest provider of commercial real estate data and analytics in the United States. Their platform covers property listings, sales comparables, lease comparables, tenant information, and market analytics. CoStar is widely used by brokers, investors, and lenders for commercial property transactions.

CoStar excels at market-level data but does not provide building violations, permit details, tax lien status, or Certificate of Occupancy data — the regulatory intelligence that RegWatch specializes in.

Market data: CoStar provides lease comps, sales comps, tenant info, and market analytics. RegWatch does not.
Regulatory data: RegWatch provides DOB/HPD/ECB violations, permits, C of O, tax liens, and zoning. CoStar does not.
NYC depth: RegWatch pulls from 11+ NYC agency sources. CoStar provides general property info across the US.
AI analysis: RegWatch offers AI-powered property risk analysis. CoStar offers analytics focused on market trends.
Pricing: RegWatch is free to search and save, with Pro monitoring at $15/mo and an optional one-time report from $15. CoStar subscriptions typically start at $400+/month (as of early 2026, list pricing).

RegWatch and CoStar serve different purposes and complement each other well. CoStar tells you what the market says a property is worth. RegWatch tells you what city records say about its condition and compliance. For thorough commercial due diligence in NYC, many professionals use both.