Momentum. Velocity. Growth.

As the leading provider of commercial real estate information, analytics and online marketplaces, CoStar delivers the tools, technologies and service offerings that create value and opportunity for the clients, businesses and consumers we serve.

Download our 2017 Company Report: Momentum Velocity Growth.


Shareholder Information

Stock Listing

Symbol: CSGP

Independent Auditors

Ernst & Young LLP
8484 Westpark Drive
McLean, VA 22102

Transfer Agent & Register

American Stock Transfer & Trust Company, LLC
6201 15th Avenue
Brooklyn, NY 11219

Investor Relations

Richard Simonelli

Vice President, Investor Relations