Andy Florance

Try to search for a home without using CoStar. Or a plot of land. Or maybe even an office. Or some choice data on a city’s hospitality market.

The Arlington, Va.-based, publicly traded real estate data hegemon that Andy Florance founded from his Princeton dorm room in 1986 includes a roster of portals and platforms that make it virtually inescapable to the property-minded.

That includes the CoStar data hub itself. And it also includes commercial real estate marketplace LoopNet and digital twinning giant Matterport for those three-dimensional tours. There’s Land.com, too, the largest online exchange for rural plots. And STR, a major source of hotel data, as well as real estate auction site Ten-X.

And then there’s those home-search go-tos Apartments.com and Homes.com. This roster does not include overseas sites like those in France, Germany or Australia (Florance’s company has 86 offices in 15 countries).

Not surprisingly, these sites translate into quite a bit of traffic and profit. 

CoStar clocked revenue of $897 million in the first quarter of 2026, a 23 percent annual increase. It netted $94 million in adjusted income, a 53 percent year-over-year rise. And Homes.com by itself in 2025 — despite activist investors who wanted CoStar to shutter it due to costs — drew nearly 2.1 billion views and averaged 108 million unique visitors per month, the company said during an April earnings call.

“CoStar Group produced $67 million in net new bookings in the first quarter of 2026, an increase of 20 percent year-over-year,” Florance said on the call (CoStar defines bookings as new sales contracts). “We have delivered 60 consecutive quarters of consistent, double-digit revenue growth in a wide range of economic conditions.”

Given that performance at 2026’s start, the company now predicts revenue for the year of $3.78 billion to $3.82 billion — ahead of 2025’s $3.2 billion — and revenue in the second quarter alone of up to $932 million.