Use a California business purchase agreement to record the sale of a business. Download your free template today.To set up a new business account to file your Business Property Statement, please call (925) 313-7600 for more information. Identify the parties involved in the transaction. 2. How do I find or see a property I'd like to bid on at the tax sale? Browse 129 businesses for sale in Contra Costa County, CA on BizBuySell. Rescission is a statutory and equitable remedy which restores the parties to the condition they were in prior to execution of the agreement.