Get a comprehensive understanding of Ohio real estate purchase and sale agreements with our indepth overview and free template. An Ohio purchase agreement establishes the terms and conditions of a real estate transaction.The purchase agreement attached here is a standard purchase agreement between the buyer and seller, for properties located in Ohio. An Ohio residential purchase agreement is a contract that establishes the terms and conditions for a real estate transaction between a buyer and seller. A buyout agreement is a binding contract between business partners that establishes the buyout details of one partner exiting the partnership.