CoStar Group

Real Estate • Arlington, Virginia, United States • 10000+ Employees

Company overview

Headquarters	1201 Wilson Blvd, Arlington, Virginia 22209, US
Phone number	+18882267404
Websites	costargroup.com costar.com
NAICS	522292
SIC	653
Keywords	Analytics, Real Estate, Sales, Research, Commercial Real Estate, Marketing, Technology, Product Development
Employees	10000+
Socials

Key Contact at CoStar Group

Nathanaëlle Coquereau

Head of sales France

Mobile @costar.com

CoStar Group Email Formats

CoStar Group uses 5 email formats. The most common is {first initial}{last name} (e.g., jdoe@costargroup.com), used 36.4% of the time.

Format	Example	Percentage
{first initial}{last name}	jdoe@costargroup.com	72.2%
{first name}{last name}	johndoe@costar.com	17.9%
{last name}{last name}	doedoe@costar.com	5.5%

About CoStar Group

CoStar Group (NASDAQ: CSGP) is a global leader in commercial real estate information, analytics, online marketplaces and 3D digital twin technology. Founded in 1986, CoStar Group is dedicated to digitizing the world’s real estate, empowering all people to discover properties, insights, and connections that improve their businesses and lives. CoStar Group’s major brands include CoStar, a leading global provider of commercial real estate data, analytics, and news; LoopNet, the most trafficked commercial real estate marketplace; Apartments.com, the leading platform for apartment rentals; and Homes.com, the fastest-growing residential real estate marketplace. CoStar Group’s industry-leading brands also include Matterport, a leading spatial data company whose platform turns buildings into data to make every space more valuable and accessible, STR, a global leader in hospitality data and benchmarking, Ten-X, an online platform for commercial real estate auctions and negotiated bids, OnTheMarket, a leading residential property portal in the United Kingdom, and Domain, a leading property technology and services marketplace in Australia. CoStar Group’s websites attracted over 111 million average monthly unique visitors in the second quarter of 2025, serving clients around the world. Headquartered in Arlington, Virginia, CoStar Group is committed to transforming the real estate industry through innovative technology and comprehensive market intelligence. From time to time, we plan to utilize our corporate website as a channel of distribution for material company information. For more information, visit CoStarGroup.com.

CoStar Group revenue & valuation

Annual revenue	$2,915,500,000
Revenue per employee	$255,000
Estimated valuation?This valuation is estimated based on industry average for the Real Estate industry and current estimated revenues	$9,329,600,000
Total funding	No funding