A For Sale By Owner contract Michigan must include: 1. The Purchase Price, 2.Fill out and share the Seller Disclosure Act Disclosure Form to comply with Michigan state law. A Michigan residential purchase agreement is a contract outlining all the terms and conditions of a residential property sale between the buyer and the seller. Michigan requires those selling FSBO to fill out and file many documents and forms. Several of these documents are legally binding agreements. THIS OFFER TO PURCHASE REAL PROPERTY (the "Offer") is entered into between. 1: Price Your Home 2. NAR provides resources for working with FSBOs, including a brochure you can purchase from the REALTOR® Store. FSBO sales are not an easy process.