Density vs Zillow
Side-by-side comparison of AI visibility scores, market position, and capabilities
Density raised $225M total (Series D, $1.05B valuation) and hit $45M+ ARR in 2025; its anonymous people-counting sensors and Waffle radar device help enterprises optimize real estate and reduce costs.
About
Density is a San Francisco-based workplace analytics company that provides anonymous people-counting sensors and a software platform for occupancy measurement and space utilization. Founded in 2014, Density builds hardware sensors — including its Waffle radar device at $149 per sensor — and pairs them with a cloud analytics platform to give enterprises real-time, privacy-safe data on how their physical spaces are used. Organizations use Density's data to make informed decisions about real estate portfolios, desk configurations, meeting room allocation, and office rightsizing.
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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