Section R. 338.1533 - Purchase and sales agreementsRule 33.
(1) All agreements and changes to the agreements between a builder, or contractor, and the customer shall be in writing and signed by the parties. Copies of all agreements and changes to agreements shall be in writing, and provided to the customer.(2) The builder or contractor shall make certain that the written agreements clearly state the terms of the transaction, including specifications, and when construction is involved, both plans and specifications, including cost, the type and amount of work to be done, and the type and quality of materials to be used.(3) If a purchase or sales agreement is for a new structure which is either substantially completed or in substantial conformance with a model, plans and specifications need not be furnished if the structure is specifically identified or related to the model and any changes, additions to or subtractions from the model are specifically agreed to and noted in writing.Mich. Admin. Code R. 338.1533