A For Sale By Owner contract California must include: 1. The Purchase Price, 2.A California purchase agreement contains all the provisions, disclosures, and general information needed to secure a binding contract. Some examples of documents you may need to sell your home are: Property survey: This is a legal document that shows the buyer the boundaries of your property. California requires those selling FSBO to fill out and file many documents and forms. Several of these documents are legally binding agreements. We recommend that most FSBO sellers use the California Association of Realtors (CAR) forms.