The department or self-insured employer may modify a standard house, a residential unit in a multiunit dwelling, or a manufactured/mobile residence.

The department or self-insured employer will only authorize modification of manufactured/mobile residences when the factory assembled structures division of the department reviews and approves the plans in advance.

The department or self-insured employer will not approve modification of commercial coaches.

The department or self-insured employer will not approve modification of recreational vehicles or recreational park trailers used as permanent residences, unless the local jurisdiction allows recreational vehicles or recreational park trailers to be used as a dwelling, and the factory assembled structures division of the department reviews and approves the plans in advance.