A California purchase agreement contains all the provisions, disclosures, and general information needed to secure a binding contract. OFFER: A. THIS IS AN OFFER FROM________________________________________________________________________("Buyer").1.2 Purchase and Sale. Get a comprehensive understanding of California real estate purchase and sale agreements with our indepth overview and free template. Free Real Estate Purchase Agreement. Answer a few simple questions. Use our template to outline the details such as the purchase price, earnest money deposit, contingencies, and other crucial aspects governing the transaction.