CIVIL CODE § 2938. Written assignment of interest to create security interest; Demand to pay rent to party other than landlord, Cal Civ Code § 2938

(a) A written assignment of an interest in leases, rents, issues, or profits of real property made in connection with an obligation secured by real property, irrespective of whether the assignment is denoted as absolute, absolute conditioned upon default, additional security for an obligation, or otherwise, shall, upon execution and delivery by the assignor, be effective to create a present security interest in existing and future leases, rents, issues, or profits of that real property. As used in this section, “leases, rents, issues, and profits of real property” includes the cash proceeds thereof. “Cash proceeds” means cash, checks, deposit accounts, and the like.

(b) An assignment of an interest in leases, rents, issues, or profits of real property may be recorded in the records of the county recorder in the county in which the underlying real property is located in the same manner as any other conveyance of an interest in real property, whether the assignment is in a separate document.