(1) If the taxable value of the property proposed to be exempt pursuant to an application under consideration, considered together with the aggregate taxable value of property exempt under certificates previously granted and currently in force under this act or under 1974 PA 198, MCL 207.551 to 207.572, exceeds 5% of the taxable value of the qualified local governmental unit, the legislative body of the qualified local governmental unit shall make a separate finding and shall include a statement in its resolution approving the application that exceeding that amount must not have the effect of substantially impeding the operation of the qualified local governmental unit or impairing the financial soundness of an affected taxing unit.

    (2) The legislative body of the qualified local governmental unit shall not approve an application for a certificate unless the applicant agrees to provide the legislative body of the qualified local governmental unit with an income certification for the income-qualified household residing within each residential dwelling unit of the qualified residential facility each year that the income-qualified household resides in that residential dwelling unit.

    (3) A qualified local governmental unit may develop and implement an audit program that includes, but is not limited to, the audit of the information submitted under subsection (2) or may contract with an independent third-party auditor to audit the information submitted under subsection (2). The qualified local governmental unit may require the applicant to cover the cost of the independent third-party auditor. The total number of residential dwelling units to be reserved for income-qualified households may be negotiated by the qualified local governmental unit but must not be less than 30% of the total number of residential dwelling units on the property or 1 residential dwelling unit, whichever is greater.

    (4) If an income-qualified household currently residing within a residential dwelling unit reserved for an income-qualified household has an increase in adjusted household income between the time an income certification is conducted and the next income certification in the following year and that household is no longer an income-qualified household, then that formerly qualified household may continue to reside as occupants within that residential dwelling unit only for the remainder of their lease agreement. However, the next available residential dwelling unit on the property shall be reserved for an income-qualified household. Under no circumstances shall all residential dwelling units on the property be occupied by households whose adjusted household income is more than 120% of the countywide area median income for greater than 12 consecutive months.