California Code, Health and Safety Code - HSC § 18029.3

(a) Any manufactured home, mobilehome, vehicle, or transportable structure manufactured, remanufactured, altered, used, or converted for use as a commercial coach or special purpose commercial coach shall comply with this part and the regulations adopted pursuant to this part relating to insignia and inspection requirements, construction, fire safety, electrical, heating, mechanical, plumbing, occupancy, and energy conservation.

(b) Special purpose commercial coach mobile food preparation units shall also meet the requirements of Article 12 (commencing with Section 114285) of Chapter 4 of Part 7 of Division 104 and the regulations implementing, interpreting, and clarifying that article, as enforced by the State Department of Health Services, which shall supersede the requirements in this part and the regulations adopted pursuant to this part in the event of a conflict.