0000899681-07-000174 25 1 20070301 20070301 20070301 Columbia Equity Trust, Inc. 0001316710 6798 201978579 MD 1231 25 34 001-32536 07661884 1750 H STREET, N.W. SUITE 500 WASHINGTON DC 20006 (202) 303-3060 1750 H STREET, N.W. SUITE 500 WASHINGTON DC 20006 25 1 columbia-25_030107.htm