Mich. Comp. Laws § 205.94ee

Sec. 4ee. A person engaged in the business of constructing, altering, repairing, or improving real estate for others is not liable for the tax levied under this act for storing, using, or consuming tangible personal property acquired from another person to the extent that the tangible personal property was purchased by that other person and that person is not exempt from the tax levied under this act or the general sales tax act, 1933 PA 167, MCL 205.51 to 205.78, and that tangible personal property was acquired by the person engaged in the business of constructing, altering, repairing, or improving real estate for others for the sole purpose of affixing that tangible personal property to real estate on behalf of that other person.