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Homes.com president David Mele and CoStar Group CEO Andy Florance

CoStar CEO Andy Florance and a rendering of the research facility (CoStar Group)

(Photo Illustration by The Real Deal with Getty Images)

CoStar's Andy Florance and REBNY's James Whelan (Getty Images, CoStar, REBNY)

CoStar CEO Andy Florance (CoStar, iStock, Illustration by Kevin Cifuentes for The Real Deal)

CoStar CEO Andrew Florance (CoStar via YouTube, iStock/Illustration by Kevin Rebong for The Real Deal)

REBNY's James Whelan and CoStar CEO Andrew Florance (Getty, iStock)

CoStar CEO Andy Florance and REBNY president James Whelan (Getty, iStock, REBNY)

REBNY's Ninve James and Trestle's Amy Gorce 

Andrew Florance, CEO of CoStar Group (CoStar, Homes.com)

CoStar's Andy Florance and CoreLogic’s Frank D. Martell (Photos via VCU; Getty; iStock)

Costar CEO Andy Florance and RentPath's Dhiren Fonseca (Photos via CoStar on YouTube; Twitter)