Cal. Health and Safety Code § 18098

(a) Whenever any person, after making application for the registration of a manufactured home, mobilehome, commercial coach, truck camper, or floating home required to be registered under this part, or after obtaining registration or being recorded on the permanent title record of the manufactured home, mobilehome, commercial coach, truck camper, or floating home registration as registered owner, legal owner, or junior lienholder, moves or acquires a new permanent address, that person shall, within 10 days thereafter, notify the department of both the old and new address. (b) No penalty shall arise from the failure of any person to notify the department pursuant to this section. (c) Neither the department nor any person shall be subject to any civil liability with respect to any notification required by statute or regulation to be mailed to a registered owner at his or her address if sent as required by law to the address last reported to the department as required by subdivision (a). (d) Any registered owner who notifies the department pursuant to subdivision (a) shall mark out the former address shown on the face of the registration card issued for the manufactured home, mobilehome, commercial coach, truck camper, or floating home and indelibly write or type the new address on the face of the card adjacent to the former address and shall initial this change.