Attached files
| file | filename |
|---|---|
| 10-K/A - ANNUAL REPORT - COSTAR GROUP, INC. | form_10-k.htm |
| EX-31.1 - CEO CERTIFICATION - COSTAR GROUP, INC. | ceocert.htm |
| EX-31.2 - CFO CERTIFICATION - COSTAR GROUP, INC. | cfocert.htm |
| EX-32.2 - CFO 906 CERTIFICATION - COSTAR GROUP, INC. | cfo-906_cert.htm |
| EX-32.1 - CEO 906 CERTIFICATION - COSTAR GROUP, INC. | ceo-906_cert.htm |
EXHIBIT
23.1
Consent
of Independent Registered Public Accounting Firm
We
consent to the incorporation by reference in the following Registration
Statements:
(1) Registration
Statement Number 333-82599 on Form S-8
(2) Registration
Statement Number 333-92165 on Form S-8
(3) Registration
Statement Number 333-45770 on Form S-8
(4) Registration
Statement Number 333-69548 on Form S-8
(5) Registration
Statement Number 333-135709 on Form S-8
(6) Registration
Statement Number 333-143968 on Form S-8
of our
reports dated February 25, 2010, with respect to the consolidated financial
statements and schedule of CoStar Group, Inc., and the effectiveness of internal
control over financial reporting of CoStar Group, Inc. included in this Annual
Report (Form 10-K/A) for the year ended December 31, 2009.
/s/ Ernst
& Young LLP
McLean,
Virginia
February
25, 2010