CoStar Group, Inc. Announces Conference Call to Discuss Q3 2007 Results and the Company's Financial Outlook


BETHESDA, Md., Oct. 10, 2007 (PRIME NEWSWIRE) -- CoStar Group, Inc. (Nasdaq:CSGP), the number one provider of information services to the commercial real estate industry, will report financial results for the third quarter ended September 30, 2007 on Wednesday, October 24, 2007 after the market close. A conference call to discuss the third quarter results and the Company's financial outlook will be hosted by Andrew C. Florance, President and Chief Executive Officer, and Brian J. Radecki, Chief Financial Officer, on Thursday, October 25, 2007 beginning at 11:00 AM (ET).



                          PRESS RELEASE:
         After the market close on Wednesday, October 24, 2007

                         CONFERENCE CALL:
                    Thursday, October 25, 2007
                       11:00 AM - Noon (ET)

                U.S. Dial-In Number:  (888) 688-0419
             International Dial-In Number:  (706) 634-0964
                      Conference ID:  20100647

Live web broadcast can be found at: www.costar.com/corporate/investor/



                      CONFERENCE CALL REPLAY:
                 U.S. Dial-In Number:  (800) 642-1687
              International Dial-In Number:  (706) 645-9291
                     Conference ID:  20100647

A replay of the conference call will be available two hours after the live call concludes through midnight on November 8, 2007. The replay will also be available over the Internet at http://www.costar.com/corporate/investor for a period of time following the call.



            

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