CoStar Group Founder and CEO Andy Florance Named to Commercial Observer’s Power 100 List

Florance honored amongst more than 100 of the most influential individuals in the commercial real estate industry

Andy Florance, Founder and CEO of CoStar Group, a leading provider of online real estate marketplaces, information, and analytics in the property markets, was recognized on Commercial Observer’s Power 100 List.

The Power 100 list, published annually, honors 100 of the most influential people, businesses, and firms driving change and innovation within the commercial real estate industry. This year’s honorees were selected for their resilience in the face of another uncertain economic cycle, recognizing their determination and fortitude as power players in the industry despite turbulent market conditions.

Florance’s inclusion on the list is a nod to the explosive growth that CoStar Group experienced in 2023, reaching $2.46 billion in revenue last year and employing over 6,200 dedicated team members across 14 different countries. Of note was the incredible growth of the company’s residential network, which in March 2024 achieved more than 156 million unique monthly visitors according to Google Analytics, positioning as one of two most heavily trafficked residential marketplace portals in the U.S. In addition, the company acquired UK residential property portal and made the decision to relocate its headquarters to Rosslyn, VA.

“I’m incredibly honored to be recognized on Commercial Observer’s Power 100 list for the second year in a row alongside some of the top commercial real estate players,” said Andy Florance, Founder and CEO of CoStar Group. “Our global team of over 6,000 individuals has worked immensely hard over the last year to deliver innovative products and services that will better serve our clients. This recognition wouldn’t be possible without their dedication and I’m eager to continue our work as a transformative force in industries we serve.”

For more information on the Power 100 including a full list of winners, visit

About CoStar Group, Inc.

CoStar Group (NASDAQ: CSGP) is a leading provider of online real estate marketplaces, information, and analytics in the property markets. Founded in 1987, CoStar Group conducts expansive, ongoing research to produce and maintain the largest and most comprehensive database of real estate information. CoStar is the global leader in commercial real estate information, analytics, and news, enabling clients to analyze, interpret and gain unmatched insight on property values, market conditions and availabilities. is the leading online marketplace for renters seeking great apartment homes, providing property managers and owners a proven platform for marketing their properties. LoopNet is the most heavily trafficked online commercial real estate marketplace with over twelve million monthly global unique visitors. STR provides premium data benchmarking, analytics, and marketplace insights for the global hospitality industry. Ten-X offers a leading platform for conducting commercial real estate online auctions and negotiated bids. is the fastest growing online residential marketplace that connects agents, buyers, and sellers. OnTheMarket is a leading residential property portal in the United Kingdom. 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. Thomas Daily is Germany’s largest online data pool in the real estate industry. Belbex is the premier source of commercial space available to let and for sale in Spain. CoStar Group’s websites attracted over 160 million unique monthly visitors in September 2023. Headquartered in Washington, DC, CoStar Group maintains offices throughout the U.S., Europe, Canada, and Asia. From time to time, we plan to utilize our corporate website,, as a channel of distribution for material company information. For more information, visit


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