0000899681-07-000175 15-12B 1 20070301 20070301 20070301 Columbia Equity Trust, Inc. 0001316710 6798 201978579 MD 1231 15-12B 34 001-32536 07662216 1750 H STREET, N.W. SUITE 500 WASHINGTON DC 20006 (202) 303-3060 1750 H STREET, N.W. SUITE 500 WASHINGTON DC 20006 15-12B 1 columbia-1512b_030107.htm