Exhibit 99.1

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

In connection with the Quarterly Report of Krupp Insured Plus III Limited
Partnership (the "Partnership") on Form 10-Q for the period ending September 30,
2002 as filed with the Securities and Exchange Commission on the date hereof
(the "Report"), I, Douglas Krupp, Co-Chariman (Principal Executive Officer),
President and Director of Krupp Plus Corporation, a General Partner of the
Partnership, certify, pursuant to U.S.C. ss. 1350, as adopted pursuant to ss.
906 of the Sarbanes-Oxley Act of 2002, that:

      (1)   The Report fully complies with the requirements of section 13(a) or
            15(d) of the Securities Exchange Act of 1934; and

      (2)   The information contained in the Report fairly presents, in all
            material respects, the financial condition and results of operations
            of the Partnership as of September 30, 2002 (the last date of the
            period covered by the Report).

/s/ Douglas Krupp
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Douglas Krupp,
Principal Executive Officer