California Code, Civil Code - CIV § 798.18

(a) A homeowner shall be offered a rental agreement for (1) a term of 12 months, or (2) a lesser period as the homeowner may request, or (3) a longer period as mutually agreed upon by both the homeowner and management.

(b) No rental agreement shall contain any terms or conditions with respect to charges for rent, utilities, or incidental reasonable service charges that would be different during the first 12 months of the rental agreement from the corresponding terms or conditions that would be offered to the homeowners on a month-to-month basis.

(c) No rental agreement for a term of 12 months or less shall include any provision which authorizes automatic extension or renewal of, or automatically extends or renews, the rental agreement beyond the initial term for a term longer than 12 months at the sole option of either the management or the homeowner.