COSTAR GROUP, INC.
CoStar Group, Inc. is an American provider of information, analytics, and marketing services to the commercial property industry in North America and Europe. Founded in 1987 by Andrew C. Florance and based in Arlington, Virginia, the company operates the CoStar online database and news website and several online marketplaces, including Apartments.com and Homes.com.
Basic company information
Each field links to its source. Financial figures retain their reporting periods; background references are identified in the source list.
- Business sectors
- residential property; commercial property; real estate industry; information technology [1]
- Company / filing name
- COSTAR GROUP, INC. [2]
- Headquarters location
- Arlington County [1]
- Founded
- 1987 [1]
- Legal form
- Delaware corporation [1]
- Leadership in background record
- Andy Florance [1]
- Founders
- Andy Florance [1]
- Official website
- http://www.costargroup.com/; https://www.costargroup.com/ [1]
- ISIN (reported securities)
- US22160N1090 [1]
- CIK
- 1057352 [2]
- Country in background record
- United States [1]
- Symbols / exchanges
- CSGP (Nasdaq) [2]
Company positioning and business
CoStar Group, Inc. is an American provider of information, analytics, and marketing services to the commercial property industry in North America and Europe. Founded in 1987 by Andrew C. Florance and based in Arlington, Virginia, the company operates the CoStar online database and news website and several online marketplaces, including Apartments.com and Homes.com. [3]
Background text: Wikipedia contributors, CoStar Group. Selected introductory paragraphs, licensed under CC BY-SA 4.0. Official filing data is cited separately.
Management and corporate governance
The Wikidata background record identifies Andy Florance in the chief-executive role. This background entry is not an official confirmation of the current board or executive roster. [1]
Financial year, securities and disclosures
Listed securities: CSGP (Nasdaq). Multiple symbols may represent different share classes or securities of the same registrant. [2]
History and key events
Founding / inception date recorded in Wikidata. [1]
Financial results and regulatory disclosures
No individual financial documents have been indexed yet. Open the source to consult company disclosures. [2]
Related entities and concepts
Frequently asked questions
When was COSTAR GROUP, INC. founded?
Founded: 1987. The linked source provides the background record. [1]
Where is the headquarters of COSTAR GROUP, INC.?
Headquarters location: Arlington County. The linked source provides the background record. [1]
Which business sectors are recorded for COSTAR GROUP, INC.?
Business sectors: residential property; commercial property; real estate industry; information technology. The linked source provides the background record. [1]
Sources and review dates
- Wikidata — company background record (CC0) ↗
- Company identity and profile data ↗
- Wikipedia contributors — CoStar Group (CC BY-SA 4.0) ↗
Reviewed 23 October 2026. Financial periods and historical event dates are shown separately. Figures reflect their stated source dates; this page is not a live quote or investment recommendation.