Mich. Comp. Laws § 247.422a
Any person who has, or shall become the owner of, any interest, less than the whole, in any lands subject to the special assessments for road purposes as provided in this act, and the acquiring of said interest occurred or shall occur subsequent to the time for appeal from the roll as referred to in section 22 of this act, may pay on the part thus acquired and owned, its proportionate share of said road assessments, by paying an amount having the same relation to the whole assessment as the area of the part on which payment is made has to the whole area originally assessed: Provided, That anyone desiring to so pay shall make application in writing to the county road commission or the state highway commissioner, as the case may be, setting forth fully and correctly a description of the part or parcel of land upon which the applicant desires to pay the assessment and also setting forth therein the interest of the applicant in such part or parcel. It shall be the duty of the county road commission or the state highway commissioner, as the case may be, to cause the description and claimed ownership to be checked, and if satisfied that the applicant is the owner of the interest claimed, said county road commission or state highway commissioner shall make a certificate over the signature of the proper officers and official seal, setting forth the proportion of the road assessment to be borne by the parcel, parcels or interest of the applicant and file the same in the office of the county treasurer of the county in which the lands in question lie and shall thereafter, and shall so long as any assessments under this act remain unpaid, prepare the annual rolls as provided in this act in accordance with any such division or divisions of such road assessment: Provided, That the actual costs incurred by said county road commission or state highway commissioner, as the case may be, shall be paid by such applicant, which cost, in the case of platted lands, of which a plat is of record in the county where the lands lie, shall not exceed $10.00 per lot and in the case of unplatted lands shall not exceed $50.00. These costs shall be paid before the filing of the certificate aforesaid in the office of the county treasurer.
MCL 247.422a