California Code, Civil Code - CIV § 798.27

(a) The management shall give written notice to all homeowners and prospective homeowners concerning the following matters:  (1) the nature of the zoning or use permit under which the mobilehome park operates.  If the mobilehome park is operating pursuant to a permit subject to a renewal or expiration date, the relevant information and dates shall be included in the notice.  (2) The duration of any lease of the mobilehome park, or any portion thereof, in which the management is a lessee.

(b) If a change occurs concerning the zoning or use permit under which the park operates or a lease in which the management is a lessee, all homeowners shall be given written notice within 30 days of that change.  Notification regarding the change of use of the park, or any portion thereof, shall be governed by subdivision (g) of Section 798.56.  A prospective homeowner shall be notified prior to the inception of the tenancy.