TODD W. HARTMAN


                         LIMITED POWER OF ATTORNEY FOR

                        SECTION 16 REPORTING OBLIGATIONS

      Know all by these presents, that the undersigned hereby makes, constitutes
and  appoints  each  of  DAVID  L.  FINCH  and  KURT  VAN  DERSLICE, each acting
individually,  as  the undersigned's true and lawful attorney-in-fact, with full
power and authority as hereinafter described on behalf of and in the name, place
and stead of the undersigned to:

      (1)  prepare,  execute,  acknowledge,  deliver  and file Forms 3, 4, and 5
(including  any  amendments thereto) with respect to the securities of CORPORATE
OFFICE  PROPERTIES  TRUST,  a  Maryland  real  estate  investment  trust, and/or
CORPORATE   OFFICE   PROPERTIES,  L.P.,  a  Delaware  limited  partnership  (the
"Company"),  required to be filed with the United States Securities and Exchange
Commission,  any  national  securities  exchanges  and  the  Company pursuant to
Section  16(a)  of  the  Securities  Exchange  Act  of  1934  and  the rules and
regulations  promulgated thereunder, as amended from time to time (the "Exchange
Act");

      (2)  seek  or  obtain,  as  the  undersigned's  representative  and on the
undersigned's  behalf,  information  on transactions in the Company's securities
from any third party, including brokers and employee benefit plan administrators
and  trustees,  and  the  undersigned  hereby  authorizes  and approves any such
release of information; and

      (3)  perform  any  and  all  other  acts  which  in the discretion of such
attorney-in-fact are necessary or desirable for and on behalf of the undersigned
in connection with the foregoing.

         The undersigned acknowledges that:

      (1)  this  Power  of  Attorney authorizes, but does not require, each such
attorney-in-fact  to  act  in  their  discretion on information provided to such
attorney-in-fact without independent verification of such information;

      (2) any documents prepared and/or executed by either such attorney-in-fact
on  behalf of the undersigned pursuant to this Power of Attorney will be in such
form  and will contain such information and disclosure as such attorney-in-fact,
in his or her discretion, deems necessary or desirable;

      (3)  neither  the Company nor either of such attorneys-in-fact assumes (i)
any   liability   for  the  undersigned's  responsibility  to  comply  with  the
requirement  of  the Exchange Act, (ii) any liability of the undersigned for any
failure  to  comply with such requirements, or (iii) any obligation or liability
of  the  undersigned for profit disgorgement under Section 16(b) of the Exchange
Act; and

      (4)  this  Power  of  Attorney  does  not  relieve  the  undersigned  from
responsibility  for  compliance  with  the  undersigned's  obligations under the
Exchange  Act,  including  without  limitation  the reporting requirements under
Section 16 of the Exchange Act.


      The   undersigned   hereby   gives   and  grants  each  of  the  foregoing
attorneys-in-fact  full  power and authority to do and perform all and every act
and thing whatsoever requisite, necessary or appropriate to be done in and about
the  foregoing  matters  as fully to all intents and purposes as the undersigned
might   or   could   do   if  present,  hereby  ratifying  all  that  each  such
attorney-in-fact  of, for and on behalf of the undersigned, shall lawfully do or
cause to be done by virtue of this Limited Power of Attorney.

      This Power of Attorney shall remain in full force and effect until revoked
by the undersigned in a signed writing delivered to each such attorney-in-fact.

      IN  WITNESS  WHEREOF, the undersigned has caused this Power of Attorney to
be executed as of this ___ day of November 2020.

                                                  /s/ Todd W. Hartman
                                                  ______________________________
                                                  Todd W. Hartman