California Code, Health and Safety Code - HSC § 18091.5

(a) The date issued.

(b) The information required by Section 18085 in the application for registration.

(c) The registration number assigned to the manufactured home, mobilehome, commercial coach, truck camper, or floating home.

(d) The date of expiration, where applicable.

(e) Any other information as the department prescribes by regulation.

The department may modify the form, arrangement, and information appearing on the registration card and may provide for standardization and abbreviations whenever the efficiency of the department will be promoted thereby, except that general delivery or post office boxes shall not be permitted as the address of the registered owner unless there is no other address.