An Ohio residential purchase agreement is a contract between the buyer and the seller of a residential property. Get a comprehensive understanding of Ohio real estate purchase and sale agreements with our indepth overview and free template.Click here to download a Standard Purchase Agreement. Perfect for FSBO's and others without a real estate agent. Purchase and Sale Agreement. A purchase and sale agreement is a contract between a buyer and seller for transacting a property in exchange for a specific price. A more simplified version of a residential purchase and sale agreement. An Ohio purchase agreement establishes the terms and conditions of a real estate transaction. Streamline your real estate transactions in Ohio with our Ohio purchase agreement. Ensure legal compliance and confidently purchase or sell properties.