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CoStar Group

CoStar Group (NASDAQ: CSGP), is a leading provider of online real estate marketplaces, information, and analytics in the property markets. Founded in 1987, CoStar conducts expansive, ongoing research to produce and maintain the largest and most comprehensive database of commercial real estate information. Our suite of online services enables clients to analyze, interpret and gain unmatched insight on commercial property values, market conditions and current availabilities. STR provides premium data benchmarking, analytics, and marketplace insights for the global hospitality industry. Ten-X provides a leading platform for conducting commercial real estate online auctions and negotiated bids. LoopNet is the most heavily trafficked commercial real estate marketplace online. Apartments.com, ApartmentFinder.com, ForRent.com, ApartmentHomeLiving.com, Westside Rentals, AFTER55.com, CorporateHousing.com, ForRentUniversity.com and Apartamentos.com form the premier online apartment resource for renters seeking great apartment homes and provide property managers and owners a proven platform for marketing their properties. Homesnap is an industry-leading online and mobile software platform that provides user-friendly applications to optimize residential real estate agent workflow and reinforce the agent-client relationship. Homes.com is the fastest growing online residential marketplace that connects agents, buyers, and sellers. BureauxLocaux is one of the largest specialized property portals for buying and leasing commercial real estate in France. Business Immo is France’s leading commercial real estate news service. CoStar Group’s websites attract tens of millions of unique monthly visitors. Headquartered in Washington, DC, CoStar Group maintains offices throughout the U.S., Europe, Canada, and Asia.

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Real Estate 11,733 Employees Found Paris, France Founded 1987 10 Similar Companies
11,733 Employees Found
86% Email Coverage
$2.0B Est Revenue
14 Office HQ
10 Similar Companies
Jun '26 Last Verified

CoStar Group – Company Information

Real Estate
Founded 1987
10,001+ employees View all
1201 Wilson Blvd, Arlington, Virginia, 22209, US
Analytics Sales Research Commercial Real Estate Marketing Product Development Analytics‎ ReSearch salés MARKETINg PRODUCT Development commercial Real estate

Frequently asked questions about CoStar Group

What is CoStar Group email format?

The widely used CoStar Group email format is {first_initial}{last} (e.g. jsmith@costar.com) with 84.78% adoption across the company.

What is CoStar Group customer service number?

To contact CoStar Group customer service number in your country click here to find.

Who is the CEO of CoStar Group?

Andy Florance is the CEO of CoStar Group.

Who are the decision makers in CoStar Group?

The decision makers in CoStar Group are Andy Florance, Jason Pellegrino, Robin Rossmann, etc. Click to Find CoStar Group decision makers emails.