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Contact CoStar Group - Phone Numbers, Email Addresses, Names

Contact Us

Call headquarters. Locate your local rep. Get tech support. Email your resume. Ask a billing question. Purchase a product. Find all the contact information you need right here.

1331 L St, NW
Washington, DC 20005

Tel: 800-204-5960 / 202-346-6500
Fax: 800-613-1301 / 202-346-6370

 

 

 

Customer Support

800-613-1303

support@costar.com

Product Sales

888-226-7404

sales@costar.com

Career Opportunities

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General Inquiries

800-204-5960

info@costar.com

Billing Inquiries

800-894-4720

tellus@costar.com

Investor Relations 877-285-8321 Email Investor Relations 
 

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