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CoStar Market Share Analysis for May 2026

CoStar Group, Inc. is a Washington, DC-based provider of information, analytics, and marketing services to the commercial property industry in the United States, Canada, the United Kingdom, France, Germany, and Spain.

Business and Consumer Services > Real Estate

Domaincostar.com

Year Founded1987

Employees1001 - 5000

Annual Revenue> $1B

CoStar

CoStar (including company regionals)

costar.com

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CoStar Revenue up to May 2026 is > 1B

revenue generated by CoStar top domains

CoStar top domains revenue over 3 years

Revenue for CoStar top domains

costar.com> 1B

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Total visits to CoStar's top domains

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Total visits last 3 months

Subsidiaries Breakdown

costar.com5.4M

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Avg. visit duration in CoStar's top domains

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Average visit duration last 3 months

Subsidiaries Breakdown

costar.com00:05:51

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Avg. pageviews on CoStar's top domains

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Average page views last 3 months

Subsidiaries Breakdown

costar.com4.53

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CoStar top competitors by domain

Top similar sites in May 2026, ranked by their affinity

crexi.comCompany NameCREXiEmployees201 - 500HQUnited States, California, Marina del ReyAnnual revenue$100M - $200MTotal visits4.1MBusiness and Consumer Services > Real Estate

Top technologies used by CoStar

These are the website technologies, by industry, used by CoStar top domains

Advertising (39)

Google Adsense

Payment & Currencies (15)

Cart Functionality

Conversion & Analytics (12)

Google Analytics

Audio Video Media (6)

YouTube

More Technologies

15

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News & Signals from CoStar

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NewsCoStar Group acquired Zonda Enterprise for $1K on May 29th '26.CoStar confirms plan to buy Zonda for $800M

NewsCoStar Group attended event retail real estate conference on May 18th '26.As retailers clamor for top-tier locations, many aging storefronts go wanting, presenting a challenge for their owners, Alanna Loeffler, a senior managing director and leader of Cushman & Wakefield's Americas retail platform, told CoStar News at ICSC's retail real estate conference this week in Las Vegas.

NewsCoStar Group has issues with alleged monopolization of the commercial real estate ("CRE") online listing and information services markets.NEW YORK - DiCello Levitt LLP, along with co-counsel Webster Book LLP and Sperling Kenny Nachwalter, LLC, has filed the first antitrust class action challenging CoStar Group, Inc. and CoStar Realty Information, Inc.'s alleged monopolization of the commercial real estate ("CRE") online listing and information services markets.