A purchase and sale agreement is a contract between a buyer and seller for transacting a property in exchange for a specific price. How to fill out the Offer to Purchase and Contract North Carolina?1. Fill in the property address and legal description. 2. TERMS AND DEFINITIONS: The terms listed below shall have the respective meaning given them as set forth adjacent to each term. (a) "Seller": (b) "Buyer":. This agreement details the property's legal description, purchase price, closing costs, and financing conditions.