Andy Florance

Andy Florance’s company in August closed its $1.9 billion deal for Domain, one of Australia’s largest online property portals. It’s the sort of splashy acquisition that CoStar Group has made seem routine over the past few years as it has solidified its status as the nation’s largest real estate listings and data platform.  

The CoStar stable is pretty much inescapable at this point, particularly on the residential side. It includes Apartments.com, Land.com, Homes.com, digital twinning site Matterport, commercial real estate marketplace Loopnet, and hospitality data provider STR. These and other sites averaged 114 million unique visits a month during the second quarter of 2025, according to CoStar. The company also has editorial and research teams that themselves serve as sources of industry information. 

The Arlington, Va.-based company that Florance started in his Princeton dorm room in 1986 and that now has 72 offices in 19 nations reported a strong second quarter in general. Revenue was up 15 percent annually, to $781 million, according to an earnings report. That represented the 57th consecutive quarter of double-digit revenue growth, per the firm. New subscriptions and sales-generating subscription changes — what CoStar calls “bookings” — were through the roof, too, suggesting that its acquisition tear has been worth it. 

“We achieved our all-time high net new bookings in Q2 of $93 million, a 65 percent increase from last quarter, powered by Apartments.com’s highest net new bookings quarter in two years,” Florance said in the earnings report. “Our dedicated Homes.com sales team turned in its best net new bookings in Q2 as we added 6,300 members, an increase of 56 percent from the end of Q1 2025.”