"CoStar Group is always focused on innovation and sourcing ideas and solutions from the best in the industry. Welcoming Visual Lease to CoStar Group is a significant milestone in our journey, opening new opportunities for both our clients and employees moving forward." About CoStar Group 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.