Code Cycle: 2016 & 2019 Standards
2016 & 2019 Residential Compliance Manual Example 1-4:
Question: Do the Standards apply to an addition to a manufactured (mobile) home?
Answer: No, Title 25 requirements, not Title 24, govern manufactured homes, including additions to the unit. Jurisdiction in a mobile home park comes under the authority of the Department of Housing and Community Development. Jurisdiction of a mobile home on private property may come under the authority of the local building department. Contact your local Building Department to verify compliance and enforcement.
Links for Title 25. Housing and Community Development mobile home parks and installation regulations:
Links to HCD requirements: