In exchange for the Vehicle, the Buyer will pay Seller the total purchase price of the. This is a tutorial on the California residential purchase agreement.CAR (California Association of Realtors) residential purchase and sale agreements are widely used in real estate transactions throughout California. You'll need to sign the car purchase agreement (or dealer bill of sale), the title, an odometer statement, and sometimes a damage disclosure statement. You'll need to sign a residential purchase agreement, make an offer, possibly put down a deposit, conduct inspections and close the sale.