To write your offer, we will use California Association of Realtors (CAR) approved forms. This guide explains how to make an offer when buying a home in California and also explores some of the common mistakes that buyers make.Work with your agent to submit a written offer based on local market value, specifying how and when the steps in the purchase will happen. That way, you know you're dealing with the actual owner of the property. How do you protect yourself and still have the flexibility to make or accept an offer on a moment's notice? Explain how you will structure the financials of the purchase. Ready to take your real estate game to the next level? Later, once the seller has accepted your offer, both parties will sign this document making it a legal agreement.