<SUBMISSION>
<ACCESSION-NUMBER>0000899681-07-000175
<TYPE>15-12B
<PUBLIC-DOCUMENT-COUNT>1
<FILING-DATE>20070301
<DATE-OF-FILING-DATE-CHANGE>20070301
<EFFECTIVENESS-DATE>20070301
<FILER>
<COMPANY-DATA>
<CONFORMED-NAME>Columbia Equity Trust, Inc.
<CIK>0001316710
<ASSIGNED-SIC>6798
<IRS-NUMBER>201978579
<STATE-OF-INCORPORATION>MD
<FISCAL-YEAR-END>1231
</COMPANY-DATA>
<FILING-VALUES>
<FORM-TYPE>15-12B
<ACT>34
<FILE-NUMBER>001-32536
<FILM-NUMBER>07662216
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>1750 H STREET, N.W.
<STREET2>SUITE 500
<CITY>WASHINGTON
<STATE>DC
<ZIP>20006
<PHONE>(202) 303-3060
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>1750 H STREET, N.W.
<STREET2>SUITE 500
<CITY>WASHINGTON
<STATE>DC
<ZIP>20006
</MAIL-ADDRESS>
</FILER>
<DOCUMENT>
<TYPE>15-12B
<SEQUENCE>1
<FILENAME>columbia-1512b_030107.htm
<TEXT>
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<TITLE>15-12b</TITLE>
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<P ALIGN=CENTER><FONT SIZE=3><B>UNITED STATES<BR>
SECURITIES AND EXCHANGE COMMISSION <BR>
Washington, D.C. 20549 </B></FONT></P>

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<P ALIGN=CENTER><FONT SIZE=3><B>FORM 15 </B></FONT></P>

<P ALIGN=CENTER><FONT SIZE=3>CERTIFICATION AND NOTICE OF TERMINATION OF REGISTRATION UNDER SECTION 12(g) OF THE<BR>
SECURITIES EXCHANGE ACT OF 1934 OR SUSPENSION OF DUTY TO FILE REPORTS UNDER<BR>
SECTIONS 13 AND 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. </FONT></P>

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<P ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=3>Commission File Number:
001-32536 </FONT></P>

<CENTER>Columbia Equity Trust, Inc.
<HR SIZE=1 NOSHADE>
(Exact name of registrant as specified in its charter) </CENTER><BR>
<BR>

<CENTER>1750 H Street, N.W., Suite 500, Washington, D.C. 20006, Tel: (202) 303-3060
<HR SIZE=1 NOSHADE>
(Address, including zip code, and telephone number, including area code, of
registrant&#146;s principal executive offices)</CENTER><BR>
<BR>

<P ALIGN=CENTER><FONT SIZE=3><U>Common Stock, $0.001 par value per share</U><BR>
(Title of each class of securities covered by this Form) </FONT></P>

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<CENTER><FONT SIZE=3>None
<HR SIZE=1 NOSHADE>
(Titles of all other classes of securities for which a duty to file reports under section 13(a) or
15(d) remains)</FONT> </CENTER><BR>
<BR>
<!-- MARKER FORMAT-SHEET="Para Large Indent" FSL="Default" -->
<P><FONT FACE="Times New Roman, Times, Serif" SIZE=3>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;Please place an X in the box(es) to designate the appropriate rule
provision(s) relied upon to terminate or suspend the duty to file reports:
</FONT></P>

<TABLE WIDTH=100% CELLPADDING=0 CELLSPACING=0 BORDER=0>
<TR VALIGN=TOP>
<TD WIDTH=10% ALIGN=LEFT></TD>
<TD WIDTH=25%>
Rule 12g-4(a)(1)(i) <BR>
<BR>
Rule 12g-4(a)(1)(ii) <BR>
<BR>
Rule 12g-4(a)(2)(i) <BR>
<BR>
Rule 12g-4(a)(2)(ii) </TD>
<TD WIDTH=5% ALIGN=LEFT>
[X ]<BR>
<BR>
[&nbsp;&nbsp;&nbsp; ]<BR>
<BR>
[&nbsp;&nbsp;&nbsp; ]<BR>
<BR>
[&nbsp;&nbsp;&nbsp; ]
</TD>
<TD WIDTH=10% ALIGN=LEFT></TD>
<TD WIDTH=25% ALIGN=LEFT>
Rule 12h-3(b)(1)(i)  <BR>
<BR>
Rule 12h-3(b)(1)(ii) <BR>
<BR>
Rule 12h-3(b)(2)(i)  <BR>
<BR>
Rule 12h-3(b)(2)(ii) <BR>
<BR>
Rule 15d-6
</TD>
<TD WIDTH=5% ALIGN=LEFT>[X ]<BR>
<BR>
[&nbsp;&nbsp;&nbsp; ]<BR>
<BR>
[&nbsp;&nbsp;&nbsp; ]<BR>
<BR>
[&nbsp;&nbsp;&nbsp; ]<BR>
<BR>
[&nbsp;&nbsp;&nbsp; ]</TD>
<TD WIDTH=25% ALIGN=LEFT></TD>
</TR>
</TABLE>
<BR>


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<P><FONT FACE="Times New Roman, Times, Serif" SIZE=3>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;Approximate number of holders of record as of the certification or
notice date: &nbsp;&nbsp;1 holder</FONT></P>

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<P><FONT FACE="Times New Roman, Times, Serif" SIZE=3>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;Pursuant to the requirements of the Securities Exchange Act of 1934, Columbia
Equity Trust, Inc. has caused this certification/notice to be signed on its
behalf by the undersigned duly authorized person.</FONT></P>

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<P ALIGN=LEFT><FONT SIZE=3>Date: March 1, 2007</FONT></P>

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<TR VALIGN=TOP>
<TD WIDTH=50% ALIGN=LEFT></TD>
<TD WIDTH=50%>
By: <U>/s/ Oliver T. Carr, III</U><BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Name: Oliver T. Carr, III<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Title: President</TD>
</TR>
</TABLE>
<BR>


<!-- MARKER FORMAT-SHEET="Stroock Para Flush" FSL="Default" -->
<P><FONT SIZE=3>Instruction: This form is required by Rules 12g-4, 12h-3 and 15d-6 of the
General Rules and Regulations under the Securities Exchange Act of 1934. The registrant
shall file with the Commission three copies of Form 15, one of which shall be manually
signed. It may be signed by an officer of the registrant, by counsel or by any other duly
authorized person. The name and title of the person signing the form shall be typed or
printed under the signature. </FONT></P>


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