CoStar Group vs Equity Residential
Side-by-side comparison of AI visibility scores, market position, and capabilities
Washington DC commercial real estate information and analytics platform; NASDAQ: CSGP; $2.5B+ revenue; owns CoStar, LoopNet, Apartments.com, and Ten-X among others.
About
CoStar Group is the dominant commercial real estate information, analytics, and marketplace company in the United States, headquartered in Washington, DC. Founded in 1987 and publicly traded on NASDAQ (CSGP), CoStar has grown to over $2.5B in annual revenue through a combination of organic growth and strategic acquisitions. The company's portfolio of brands includes CoStar (the institutional CRE research and analytics platform), LoopNet (the leading commercial property listing marketplace), Apartments.com (the largest apartment listing marketplace), and Ten-X (the digital commercial real estate auction platform).\n\nCoStar's flagship research database aggregates data on millions of commercial properties across the US and internationally, including lease comparables, sales transactions, building specifications, tenant information, and market analytics. This data is gathered through a large field research team that physically visits and verifies properties, combined with automated data aggregation from public records, legal filings, and broker submissions. CoStar's subscribers include commercial real estate brokers, lenders, investors, corporate occupiers, and appraisers who rely on its data for deal sourcing, underwriting, and market research.\n\nCoStar has invested aggressively in international expansion, acquiring SIOR's data assets, OnTheMarket in the UK, and other regional platforms. The company also made a major push into residential real estate with its acquisition of Homesnap and investments in its Homes.com platform, competing with Zillow and Realtor.com. CoStar's combination of subscription data products, marketplace advertising, and transaction platforms makes it a uniquely diversified real estate technology company.
Chicago apartment REIT (NYSE: EQR) ~80,000 apartments; Q4 2024 EPS $1.10 (+34%), same-store NOI +3.1% in 2024, 2025 guidance 2.25-3.25% rev growth in Boston/NYC/Seattle/SF competing with AvalonBay.
About
Equity Residential is a Chicago, Illinois-based apartment real estate investment trust — publicly traded on the New York Stock Exchange (NYSE: EQR) as an S&P 500 Real Estate component and member of the S&P 500 — owning and operating approximately 300 apartment communities with roughly 80,000 apartments concentrated in high-barrier-to-entry coastal and Sun Belt urban markets including Boston, New York, Washington D.C., Seattle, San Francisco Bay Area, Los Angeles, Denver, Atlanta, and Dallas through approximately 2,400 employees. In Q4 2024, Equity Residential reported earnings per share of $1.10 (versus $0.82 in Q4 2023, +34.1%), with full year 2024 same-store revenues increasing 3.0% and same-store net operating income (NOI) growing 3.1%. For 2025, the company provided guidance of 2.25%-3.25% same-store revenue growth, reflecting continued but moderating rent increases across its coastal and Sun Belt markets. Founded in 1966 by Sam Zell (who also founded Equity Commonwealth and other real estate enterprises), Equity Residential went public in 1993 and is managed by CEO Mark Parrell, who joined from Heitman Capital Management. The company's portfolio of professionally managed, amenity-rich apartment communities targets the affluent renter demographic — typically college-educated professionals earning $90,000-150,000 annually — who choose to rent in high-cost gateway cities rather than purchase.
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