Real Estate File No: 4026-57.3. This document is an agreement for sale of a property.With our free Sales Agreement form, you'll be ready to print or download your contract in no time. A purchase and sale agreement is a contract between a buyer and seller for transacting a property in exchange for a specific price. Filling out this form involves carefully entering required details in each section. Business brokers participate in the majority of business purchase and sale transactions in the greater San Jose area.