Cal. Code Regs. tit. 25 § 3020
Every manufacturer of factory-built housing subject to requirements of this subchapter shall obtain plan approval for each model, and shall obtain insignia for each unit manufactured. The manufacturer shall maintain a quality control program, and the units shall be manufactured in accordance with the approved plans and shall be inspected as required by provisions of this subchapter. No factory-built housing bearing a department insignia of approval shall be in any way modified prior to installation unless approval is first obtained from the department or design approval agency.
Cal. Code Regs. Tit. 25, § 3020
Note: Authority cited: Sections 17003.5 and 19990, Health and Safety Code. Reference: Sections 19980, 19981, 19983 and 19990, Health and Safety Code.