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CoStar

June 2026

CoStar Market Share Analysis for June 2026

Who We Serve
Business and Consumer Services > Real Estate
Domaincostargroup.com
Year Founded1987
Employees1001 - 5000
Annual Revenue--
HQ:United States, District of Columbia, Washington
costargroup.com
CoStar
CoStar (including company regionals)
  • costargroup.com
    costargroup.com
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CoStar Revenue up to June 2026 is --

revenue generated by CoStar top domains

CoStar top domains revenue over 3 years

Revenue for CoStar top domains

costargroup.comcostargroup.com--
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Total visits to CoStar's top domains

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Total visits last 3 months

Subsidiaries Breakdown
costargroup.comcostargroup.com2.3M
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Avg. visit duration in CoStar's top domains

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Average visit duration last 3 months

Subsidiaries Breakdown
costargroup.comcostargroup.com00:01:01
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Avg. pageviews on CoStar's top domains

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Average page views last 3 months

Subsidiaries Breakdown
costargroup.comcostargroup.com2.50
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CoStar top competitors by domain

Top similar sites in June 2026, ranked by their affinity

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Top technologies used by CoStar

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

Advertising (26)

DoubleClick

DoubleClick

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Payment & Currencies (8)

Cart Functionality

Cart Functionality

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Conversion & Analytics (6)

Google Analytics

Google Analytics

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Audio Video Media (5)

YouTube

YouTube

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More Technologies

11

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News & Signals from CoStar

With Similarweb Sales signals alerts, you’ll receive daily updates of recognized buying signals whenever new opportunities or threats arise in your target audience.

NewsCoStar Group increased headcount by 500 on Jul 1st '25.At the time of the company's similar 2025 layoffs, CoStar reported more than 2,500 employees in the Richmond area and said it planned to hire around 500 new salespeople for Homes.com and 100 new market analysts.
July 16, 2026Read More
NewsCoStar Group will promote robin rossmann to chief financial officer on Jul 31st '26.Robin Rossmann will become chief financial officer of CoStar Group Inc. on July 31, 2026, moving into the role from his current post as managing director for Europe, the company announced on Monday.
July 14, 2026Read More
NewsCoStar Group will hire Robin Rossmann as Chief Financial Officer on Jul 31st '26.CoStar Group has appointed Robin Rossmann as its new Chief Financial Officer.
July 14, 2026Read More

See all CoStar signals

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