A For Sale By Owner contract Michigan must include: 1. The Purchase Price, 2.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. (4) Complete this form yourself. (5) If some items do not apply to your property, check NOT AVAILABLE. Find the required and recommended documents for selling your home without a realtor in Michigan, plus where to get paperwork help. The purpose of this package is to assist you in the sale of your own home without the services of an attorney or a realtor.