Cal. PROB § 10160

The estate is not liable to an agent, broker, or auctioneer under a contract for the sale of property or for any fee, commission, or other compensation or expenses in connection with a sale of property unless the following requirements are satisfied: (a) An actual sale is made. (b) If court confirmation or approval is required, the sale is confirmed or approved by the court as required. (c) The sale is consummated.