California Code, Civil Code - CIV § 800.301

A resident may advertise the sale or exchange of his or her floating home or, if not prohibited by the terms of an agreement with the management or ownership, may advertise the rental of his or her floating home by displaying a sign in the window of his or her floating home stating that the floating home is for sale or exchange or, if not prohibited, for rent by the owner of the floating home or his or her agent.  The sign shall state the name, address, and telephone number of the owner of the floating home or his or her agent, and shall be 24 inches in width and 18 inches in length.