Exhibit 99.1

Written  Statement  of Chief  Executive  Officer  and  Chief  Financial  Officer
Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

The undersigned,  the Chief Executive Officer and the Chief Financial Officer of
Grubb &  Ellis  Company  (the  "Company"),  each  hereby  certifies  that to his
knowledge, on the date hereof:

(a)   the Form 10-Q of the Company for the period ended  December 31, 2002 filed
      on the date  hereof  with the  Securities  and  Exchange  Commission  (the
      "Report") fully complies with the requirements of Section 13 (a) or 15 (d)
      of the Securities Exchange Act of 1934; and

(b)   information  contained  in the Report  fairly  presents,  in all  material
      respects,  the  financial  condition  and  results  of  operations  of the
      Company.

                            /s/ BARRY M. BAROVICK
                            ---------------------
                            Barry M. Barovick
                            President, Chief Executive Officer and a director
                            February 14, 2003

                            /s/ IAN Y. BRESS
                            ----------------
                            Ian Y. Bress
                            Chief Financial Officer
                            February 14, 2003