Cal. Civ. Code § 800.31

A rule or regulation of the floating home marina may be amended at any time with the consent of a homeowner, or without his or her consent upon written notice to him or her of not less than six months. Written notice to a new homeowner, whose tenancy commences within the required period of notice, of a proposed amendment shall constitute compliance with this section where the written notice is given to him or her before the inception of his or her tenancy.