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                                                                      EXHIBIT 24

                       ASSISTANT SECRETARY'S CERTIFICATE


     The undersigned Assistant Secretary of Grubb & Ellis Company, a Delaware
corporation, hereby certifies that the following resolutions were duly adopted
by the Board of Directors of Grubb & Ellis Company at a meeting duly held on
September 12, 2000 and are currently in full force and effect:

               WHEREAS, John G. Orrico and Maureen A. Ehrenberg, Members of the
     Office of the President of Grubb & Ellis Company, a Delaware corporation
     (the "Company"), and Blake W. Harbaugh, Senior Vice President and Chief
     Financial Officer, may not be available to sign the Company's Annual Report
     on Form 10-K for the 2000 fiscal year on behalf of the Company (the "Form
     10-K").

               NOW, THEREFORE, BE IT RESOLVED, that the Board of Directors of
     the Company hereby authorizes the appointment of the following Corporate
     Officers to act as the attorneys with full power of substitution for
     Messrs. Orrico and Harbaugh and Ms. Ehrenberg for the specific purpose of
     signing and filing with the Securities and Exchange Commission, on behalf
     of each such person as officer of the Company, the Company's Annual Report
     on Form 10-K and any and all amendments or supplements thereto, and any and
     all instruments or documents filed as part of or in conjunction with such
     filings or amendments or supplements thereto and hereby ratifies all that
     said attorneys or any of them may do or have done in the past in connection
     with such powers of attorney:

     Brian D. Parker     Member of the Office of the President and Executive
                         Vice President
     Robert J. Walner    Senior Vice President and Corporate Secretary
     Donald D. Olinger   Vice President and Treasurer

               RESOLVED FURTHER, that the appropriate Corporate Officers, and
     each of them, are hereby authorized and directed to do any and all things,
     including the execution of any and all documents, that they, and each of
     them, shall deem necessary or appropriate to effectuate the foregoing
     resolution; provided, that nothing herein shall be construed to permit
     authority for any actions which are reserved for the Board of Directors or
     the stockholders of the Company pursuant to the Certificate of
     Incorporation and the Bylaws.


Dated: September 22, 2000                         /s/ Carol M. Vanairsdale
                                                  ------------------------
                                                  Carol M. Vanairsdale
                                                  Assistant Secretary

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                             GRUBB & ELLIS COMPANY
                               POWER OF ATTORNEY

                          ANNUAL REPORT ON FORM 10-K


     Each of the undersigned directors of Grubb & Ellis Company, a Delaware
corporation (the "Company"), hereby constitutes and appoints Brian D. Parker,
Robert J. Walner and Donald D. Olinger, jointly and severally, his attorneys
with full power of substitution, to sign and file with the Securities and
Exchange Commission, in his capacity as director of the Company, the Company's
Annual Report on Form 10-K for the fiscal year ending June 30, 2000 and any and
all amendments or supplements thereto, and any and all instruments or documents
filed as part of or in conjunction with such Annual Report or amendments or
supplements thereto, and hereby ratifies all that said attorneys or any of them
may do or cause to be done by virtue hereof.

     This instrument may be executed in a number of identical counterparts, each
of which shall be deemed an original for all purposes and all of which shall
constitute, collectively, one instrument.

     IN WITNESS WHEREOF, we have signed these presents this 12/th/ day of
September, 2000.


/s/ R. David Anacker                    /s/ Reuben S. Leibowitz
----------------------------------      ----------------------------------------
R. David Anacker                        Reuben S. Leibowitz


/s/ Robert J. McLaughlin
----------------------------------      ________________________________________
Robert J. McLaughlin                    John D. Santoleri


/s/ Joe F. Hanauer                      /s/ C. Michael Kojaian
----------------------------------      ----------------------------------------
Joe F. Hanauer                          C. Michael Kojaian


/s/ Sidney Lapidus                      /s/ Todd Williams
----------------------------------      ----------------------------------------
Sidney Lapidus                          Todd Williams

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<PAGE>

                             GRUBB & ELLIS COMPANY
                               POWER OF ATTORNEY

                          ANNUAL REPORT ON FORM 10-K


     Each of the undersigned Members of the Office of the President of Grubb &
Ellis Company, a Delaware corporation (the "Company"), hereby constitutes and
appoints Brian D. Parker, who is also a Member of the Office of the President;
Robert J. Walner; and Donald D. Olinger; jointly and severally, their attorneys
with full power of substitution, to sign and file with the Securities and
Exchange Commission, in their capacity as Members of the Office of the President
of the Company, the Company's Annual Report on Form 10-K for the 2000 fiscal
year and any and all amendments or supplements thereto, and any and all
instruments or documents filed as part of or in conjunction with such Annual
Report or amendments or supplements thereto, and hereby ratifies all that said
attorneys or any of them may do or cause to be done by virtue hereof.

     This instrument may be executed in a number of identical counterparts, each
of which shall be deemed an original for all purposes and all of which shall
constitute, collectively, one instrument.

     IN WITNESS WHEREOF, I have signed these presents this 12/th/ day of
September, 2000.



/s/ John G. Orrico                      /s/ Maureen A. Ehrenberg
---------------------------------       ----------------------------------------
John G. Orrico                          Maureen A. Ehrenberg
Member of the Office of the President   Member of the Office of the President

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