A purchase and sale agreement is a contract between a buyer and seller for transacting a property in exchange for a specific price. Access the entire library of over 400 RPI forms for your professional use – FREE.A California purchase agreement contains all the provisions, disclosures, and general information needed to secure a binding contract. Use a San Jose residential lease agreement to protect the rights of both the landlord and tenant. Download your template here. Real Estate File No: 4026-57.3.