CompStak vs Zillow
Side-by-side comparison of AI visibility scores, market position, and capabilities
NYC-based commercial real estate lease comparables and analytics platform; raised $50M+; uses crowdsourced exchange model where brokers trade comp data for platform access.
About
CompStak is a commercial real estate lease comparables and analytics platform headquartered in New York City. Founded in 2011, the company has raised over $50M in funding and built a unique data exchange model where commercial real estate brokers, appraisers, and researchers contribute lease transaction data in exchange for access to CompStak's aggregated database of comps. This exchange model has enabled CompStak to build one of the most comprehensive collections of verified CRE lease comparables in the US market.\n\nCompStak's platform allows subscribers to search and analyze lease comps by submarket, building class, tenant industry, deal size, and lease term, with transaction details including effective rent, free rent periods, tenant improvement allowances, and base rent escalations. These metrics are notoriously difficult to obtain in commercial real estate, where lease terms are typically private. CompStak's analytics tools allow investors, lenders, and asset managers to benchmark their portfolio leases against market, underwrite acquisitions, and track rent trends in specific submarkets.\n\nCompStak serves commercial real estate brokers, lenders, private equity investors, and institutional owners who need reliable comp data for underwriting and market analysis. The company competes with CoStar's lease comps database but differentiates through its exchange model, which incentivizes brokers to contribute current transaction data faster than traditional research-gathering methods, and through its more granular lease detail available in core markets.
NASDAQ: Z largest US real estate marketplace with 204M monthly users and Zestimate AI valuations at $2.2B revenue; Premier Agent program and Zillow Home Loans competing with Realtor.com and Redfin for real estate transaction share.
About
Zillow Group is a Seattle-based real estate technology company — listed on NASDAQ (NASDAQ: Z and ZG) — operating the largest US real estate marketplace with 204 million monthly unique users browsing 160+ million US property listings, home valuations (the proprietary Zestimate AI algorithm), rental listings, and mortgage services, generating $2.2 billion in revenue in fiscal year 2024 through its Premier Agent program (paying real estate agents for lead referrals from buyers and sellers searching on Zillow), Zillow Home Loans (mortgage origination), and rental marketplace revenue. Founded in 2006 by Rich Barton and Lloyd Frink (former Microsoft and Expedia executives), Zillow created the consumer real estate search category with the Zestimate home valuation tool that gave homeowners and buyers unprecedented access to estimated market values outside of broker relationships.
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