, 20 ("Offer Reference Date"). Generate, fill in, and complete now.The Real Estate Purchase Contract is a six-page document we use when we write an offer to buy a home. A purchase and sale agreement s a legally-binding document that establishes the terms and conditions related to a real estate transaction. A Utah residential purchase agreement is a contract used when a buyer makes an offer to purchase real estate from a willing seller. An agreement to sell real estate, or a purchase agreement, is a legally enforceable document that specifies the terms of a real estate transaction. The Utah real estate purchase agreement is a document that is meant to get the negotiation process going.