Cal. Health & Safety Code § 18085

(a) Application for the original registration of a manufactured home, mobilehome, commercial coach, truck camper, or floating home required to be registered under this part shall be made to the department upon the appropriate forms approved by the department, and shall be accompanied by the filing fee prescribed by the department. If the application is for the original registration of a manufactured home, mobilehome, or commercial coach, or of a truck camper manufactured on or after January 1, 1986, the application shall include the original manufacturer’s certificate of origin in the form prescribed by Sections 18093 and 18093.5. If the original certificate of origin is not in existence, a duplicate thereof shall be obtained from the manufacturer and submitted with the application for original registration. Any duplicate copy shall be conspicuously marked by the manufacturer as a duplicate copy.
(b) The application shall include, but not be limited to, all of the following:
1. (1) The true name and mailing address of the registered owner, the legal owner, if any, and junior lienholders, if any.
2. (2) The name of the county in which the registered owner resides.
3. (3) The situs address of the manufactured home, mobilehome, or commercial coach, or the residence address of a truck camper owner, or floating home owner to include the county of residence.
4. (4) A description of the manufactured home, mobilehome, commercial coach, truck camper, or floating home, including all of the following:
  1. (A) The manufacturer’s name and identification number.
  2. (B) The date of manufacture.
  3. (C) The serial number or numbers.
  4. (D) The federal label number or numbers affixed pursuant to the National Manufactured Housing Construction and Safety Standards Act of 1974 (42 U.S.C. Sec. 5401 et seq.) or department insignia number or numbers affixed pursuant to Section 18026.
  5. (E) The date first sold or leased to a purchaser or lessee for purposes other than resale.
  6. (F) Any other information as may be reasonably required by the department to enable it to determine whether the manufactured home, mobilehome, commercial coach, truck camper, or floating home is lawfully entitled to registration.
(c) If the application is for a floating home or a truck camper for which no certificate of origin has been issued pursuant to Section 18093.5, other evidence of ownership may be accepted at the sole discretion of the department in lieu of the manufacturer’s certificate of origin.