This is a legally binding Real Estate Purchase Contract ("REPC"). All others seek professional advice.A quick rundown of the purchase contract so this is key if you're buying or selling this is the contract that dictates I mean the whole journey. Generate, fill in, and complete now. A Utah residential purchase agreement is a contract used when a buyer makes an offer to purchase real estate from a willing seller. This form from the Utah Real Estate Commission lets professional realtors create an official contract for the sale or purchase of residential property.