CoStar Group

CoStar Group is a real estate services company. It offers online real estate marketplaces, information, and analytics in the property markets, and conducts ongoing research to maintain a comprehensive database of commercial real estate information.

Founded in 1987, CoStar is based in Washington, D.C.

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Latest CoStar Group News

CoStar stockholders back directors, approve pay plan 

Jun 25, 2026By Brooklee Han and HousingWire Automation

CoStar investors reelected eight directors with over 93% support and approved say-on-pay at 71.38% as margins stay in focus.

• CoStar amicus brief denied in Zillow MRED Compass case 

  Jun 16, 2026By Brooklee Han

• CoStar targets Zillow Preview in amicus filing over MRED feed 

  Jun 10, 2026By Brooklee Han

• Why CoStar, Berkshire Hathaway are betting big on homebuilding 

  Jun 02, 2026By Brooklee Han

• CoStar to buy Zonda from MidOcean Partners 

  May 29, 2026By Brooklee Han and HousingWire Automation

• Zillow and CoStar continue to spar over Matterport 3D tours 

  May 27, 2026By Brooklee Han

• CoStar CEO Andy Florance buys over 70,000 shares 

  May 05, 2026By Brooklee Han

• CoStar Group, Homes.com surge in Q1 — CEO welcomes end of activist ‘distraction’ 

  Apr 29, 2026By Jonathan Delozier

• Third Point exits CoStar, ending its activist investor push 

  Apr 13, 2026By Brooklee Han

• CoStar says Zillow copyright infringement now tops 53,000 photos 

  Mar 27, 2026By Brooklee Han

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