Write the contract in six steps Start with a contract template. Open with the basic information. Describe in detail what you have agreed to. Include a description of how the contract will be ended. Write into the contract which laws apply and how disputes will be resolved. Include space for signatures.
The seller's agent usually prepares it (upstate, usually a real estate agent/ broker; downstate, usually the seller's attorney). If a real estate agent or broker prepares a contract, it will usually be subject to approval by the parties' attorneys within a specified short time.
For a contract to be valid and enforceable in California, all parties must enter into the agreement voluntarily. If one of the contracting parties can prove that they entered into the contract under duress, coercion, or undue influence, the court may cancel or revoke the contract.
You either draft a written offer yourself or you have a licensed real estate agent (preferably a Realtor) draft one for you and submit it to the seller or their agent for consideration. A verbal offer and acceptance is meaningless in real estate unless it is for a short term rental.