EXHIBIT 99.1


                                  CERTIFICATION
                                       OF
                             CHIEF EXECUTIVE OFFICER
                                       AND
                             CHIEF FINANCIAL OFFICER
                           PURSUANT TO 18 U.S.C. 1350,
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002


     I, Lawrie Porter, certify,  pursuant to 18 U.S.C. 1350, as adopted pursuant
to Section 906 of the  Sarbanes-Oxley  Act of 2002, that the Quarterly Report on
Form 10QSB of TPI Land Development III Limited Partnership for the quarter ended
March 31,2003, fully complies with the requirements of Section 13(a) or 15(d) of
the  Securities  Exchange  Act of 1934 and that  information  contained  in such
Quarterly Report on Form 10-KSB fairly presents,  in all material respects,  the
financial  condition  and  results of  operations  of TPI Land  Development  III
Limited Partnership.

     I, Lawrie Porter, certify,  pursuant to 18 U.S.C. 1350, as adopted pursuant
to Section 906 of the  Sarbanes-Oxley  Act of 2002, that the Quarterly Report on
Form 10QSB of TPI Land Development III Limited Partnership for the quarter ended
March 31, 2003,  fully complies with the  requirements of Section 13(a) or 15(d)
of the Securities  Exchange Act of 1934 and that  information  contained in such
Quarterly Report on Form 10-KSB fairly presents,  in all material respects,  the
financial  condition  and  results of  operations  of TPI Land  Development  III
Limited Partnership.


Date: May 5, 2003                     /s/ Lawrie Porter
                                      -------------------------------
                                      Lawrie Porter, Managing Member,
                                      Investors Recovery Group, Inc.
                                      Principal Executive Officer
                                      Principal Financial Officer