California Code, Civil Code - CIV § 800.49

(a) The management may only demand a security deposit on or before initial occupancy and the security deposit may not be in an amount or value in excess of an amount equal to two months' rent that is charged at the inception of the tenancy, in addition to any rent for the first month. In no event shall additional security deposits be demanded of a homeowner following initial occupancy.

(b) After the homeowner has promptly paid to the management within five days of the date the amount is due, all of the rent, utilities, and reasonable service charges for any 12-consecutive-month period subsequent to the collection of the security deposit by the management, or upon resale of the floating home, whichever occurs earlier, the management shall, upon the receipt of a written request from the homeowner, refund to the homeowner the amount of the security deposit within 30 days following the end of the 12-consecutive-month period of prompt payment or the date of the resale of the floating home.

(c) In the event that the interest in the floating home marina is transferred to any other party or entity, the successor in interest shall have the same obligations of management contained in this section with respect to the security deposit.

(d) The management shall not be required to place any security deposit collected in an interest-bearing account or to provide a homeowner with any interest on the security deposit collected.

(e) This section applies to all security deposits collected on or after January 1, 1991.