CoStar Group Publishes First Corporate Social Responsibility Report, Demonstrates Commitment to Positive ESG Practices

Report Highlights CoStar Group’s Commitment to Excellence and Transparency for Environment, Social and Governance Practices

WASHINGTON--(BUSINESS WIRE)-- Today, CoStar Group, Inc. (NASDAQ: CSGP), a leading provider of online real estate marketplaces, information and analytics in the commercial and residential property sectors, has published its first Sustainability Report, underscoring its commitment to building a foundation of responsible business strategies that drive value for its people, communities, and shareholders through positive environmental, social and governance (ESG) practices.

“CoStar Group is committed to supporting ESG principles both inside and outside of the company,” said Andrew C. Florance, Founder and Chief Executive Officer of CoStar Group. “We have quietly been a leader in sustainability for decades – from converting our fleet of over 100 research vehicles from gasoline to hybrid and then to electric, to prioritizing LEED certified and Energy Star rated buildings for our global offices. We are excited by the opportunities we have before us to produce positive change in the world and to help create a sustainable future for our company, clients, consumers, employees, communities, and shareholders.”

Core tenets of CoStar Group’s new report include a focus on positive environmental practices – including operational efficiency and industry stewardship pillars – plus diversity-driven initiatives and a prioritization of social wellbeing; community impact and volunteerism efforts; and defining operational integrity and corporate governance.

To learn more about CoStar’s commitment to positive ESG practices or to read the company’s 2022 report, visit https://investors.costargroup.com/overview/default.aspx.

About CoStar Group, Inc.

CoStar Group, Inc. (NASDAQ: CSGP) is a leading provider of online real estate marketplaces, information and analytics, specializing in multifamily and single family residential, office, industrial, retail, hospitality and land property sectors. Founded in 1987, our suite of online services enables clients to advertise, sell and lease their properties, analyze, interpret and gain unmatched insight on commercial and residential property values, market conditions and current availabilities. CoStar is the industry-leading commercial real estate information, analytics and news platform. STR provides premium data benchmarking, analytics and marketplace insights for the global hospitality sector. Ten-X provides a leading platform for conducting commercial real estate online auctions and negotiated bids. LoopNet is the most heavily trafficked commercial real estate marketplace online. Apartments.com, ApartmentFinder.com, ForRent.com, ApartmentHomeLiving.com, Westside Rentals, AFTER55.com, CorporateHousing.com, ForRentUniversity.com and Apartamentos.com form the premier online apartment resource for renters seeking great apartment homes and provide property managers and owners a proven platform for marketing their properties. Homesnap is an industry-leading online and mobile software platform that provides user-friendly applications to optimize residential real estate agent workflow and reinforce the agent-client relationship. Homes.com offers real estate professionals advertising and marketing services for residential properties. Realla is the UK’s most comprehensive commercial property digital marketplace. BureauxLocaux is one of the largest specialized property portals for buying and leasing commercial real estate in France. CoStar Group’s websites attract hundreds of millions of unique monthly visitors. Headquartered in Washington, DC, CoStar maintains offices throughout the U.S. and in Europe, Canada and Asia with a staff of approximately 4,800 worldwide, including the industry’s largest professional research organization. For more information, visit www.costargroup.com.

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Media:

Matthew Blocher

CoStar Group

mblocher@costar.com

202.346.6775

Source: CoStar Group, Inc.