A purchase and sale agreement is a contract between a buyer and seller for transacting a property in exchange for a specific price. Supplier warrants that the Goods will be of merchantable quality and free from defects in design, engineering, material, and workmanship for a period of two (2).How to fill out the California Residential Purchase Agreement and Instructions? 1. Review each section of the agreement carefully. 2. Your computer must have the Adobe Acrobat Reader installed in order to view any of these documents. This Goods Purchase Agreement ("Agreement") is entered into this 6th day of. A California purchase agreement contains all the provisions, disclosures, and general information needed to secure a binding contract. Grant Deed on or about the date of this Declaration in the Official Records of San Bernardino County.