This is a tutorial on the California residential purchase agreement. You'll need to sign a residential purchase agreement, make an offer, possibly put down a deposit, conduct inspections and close the sale.My main focus is to show you car forms and how to get into that system and how to create a transaction. Below, we've outlined the steps and forms required for how to sell a car in the state of California so you can sell your car quickly for the most cash. A vehicle purchase agreement represents the document that lists the legal obligations of both the buyer and seller. This comprehensive legal document outlines the terms and conditions that govern the sale, serving as a roadmap for both buyers and sellers. I recently put a property under contract using a California realtor. I used the CAR form RESIDENTIAL PURCHASE AGREEMENT AND JOINT ESCROW INSTRUCTIONS.