Michigan Compiled Laws, Chapter 207. Taxation § 207.659

Sec. 9. (1) A facility for which a commercial facilities exemption certificate is in effect, but not the land on which the facility is located or to be located, or personal property other than personal property assessed pursuant to section 14(6) of the general property tax act, Act No. 206 of the Public Acts of 1893, as amended, being section 211.14 of the Michigan Compiled Laws, for the period on and after the effective date of the certificate and continuing so long as the commercial facilities exemption certificate is in force, is exempt from ad valorem property taxes. A lessee, occupant, user, or person in possession of the facility for the same period is exempt from ad valorem taxes imposed under Act No. 189 of the Public Acts of 1953, as amended, being sections 211.181 to 211.182 of the Michigan Compiled Laws.

(2) Unless earlier revoked as provided in section 15,  1 a commercial facilities exemption certificate shall remain in force and effect for a period to be determined by the legislative body of the local governmental unit. The certificate may be issued for a period of at least 1 year, but not to exceed 12 years. If the number of years determined is less than 12, the certificate may be subject to review by the legislative body of the local governmental unit and the certificate may be extended. The total amount of time determined for the certificate including any extensions shall not exceed 12 years after the completion of the facility. The certificate shall commence with its effective date and end on the December 31 next following the last day of the number of years determined. The date of issuance of a certificate of occupancy, if required by appropriate authority, shall be the date of completion of the facility.

(3) If the number of years determined by the legislative body of the local governmental unit for the period a certificate remains in force is less than 12 years, the review of the certificate for the purpose of determining an extension shall be based upon factors, criteria and objectives that shall be placed in writing, approved at the time the certificate is approved by the legislative body of the local governmental unit and sent to the applicant and commission.