Mich. Comp. Laws § 207.776
Not later than 60 days after receipt of an approved application for a homestead facility or a rehabilitated facility, and not later than 30 days, or if an approved application is received after June 15, not later than 45 days after receipt of an approved application for a new facility, the qualified assessing authority shall determine whether the homestead facility, new facility, or rehabilitated facility complies with the requirements of this act. If the qualified assessing authority finds compliance, the qualified assessing authority shall issue a neighborhood enterprise zone certificate to the applicant and send a certified copy of the certificate to each affected taxing unit. The assessor shall keep the certificate filed on record in his or her office. The qualified assessing authority shall maintain a record of all certificates filed. Notice of the qualified assessing authority's refusal to issue a certificate shall be sent by certified mail to the same persons.
MCL 207.776