0001057352-08-000004 10-K 14 20071231 20080229 20080228 COSTAR GROUP INC 0001057352 7389 522091509 1231 10-K 34 000-24531 08652554 2 BETHESDA METRO CENTER 10TH FLOOR BETHESDA MD 20814 3012158300 2 BETHESDA METRO CENTER 10TH FLOOR BETHESDA MD 20814 10-K 1 form10k.htm ANNUAL REPORT EX-10.2 2 amnd2007stock_incentiveplan.htm 2007 STOCK INCENTIVE PLAN, AMENDED EX-10.3 3 frenchsub_plan.htm FRENCH SUB-PLAN EX-10.10 4 rest_stockform-frenchsubform.htm FORM OF RESTRICTED STOCK AGREEMENT, FRENCH SUB-PLAN EX-10.14 5 pm_service-agmt.htm PAUL MAPLES SERVICE AGREEMENT EX-10.22 6 london_lease-areement.htm AGREEMENT FOR LEASE - LONDON GRAPHIC 7 costar_logo.jpg OOSTAR LOGO GRAPHIC 8 form10k0.gif CHART EX-21.1 9 exhibit21_1.htm SUBSID OF REGISTRANT EX-23.1 10 exhibit23_1.htm CONSENT OF IRPAF EX-31.1 11 exhibit31_1.htm CEOCERT EX-31.2 12 exhibit31_2.htm CFOCERT EX-32.1 13 exhibit32_1.htm CEO906CERT EX-32.2 14 exhibit32_2.htm CFO906CERT