Factory-Built Structures

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Dept. of Community, Trade & Economic Development Office of Manufactured Housing
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Get information about installation requirements and/or alteration permit and inspection requirements for factory-built structures in Washington State.


Mobile/Manufactured Homes
Single family residences built to either a state code or the HUD standard.

Recreational Vehicles
Camping trailers, fifth-wheel trailers, motor homes, travel trailers and truck campers.

Recreational Park Trailers
Trailer-type units that are primarily designed to provide temporary living quarters.

Conversion Vendor & Medical Units
Portable structures used as mobile food concession units or mobile medical units.

Commercial Coaches
Portable structures used for temporary commercial purposes.

Residential/Commercial Structures
Commercial or residential structures built to the current State Building Code requirements.

Temporary Worker Housing
Structures built for temporary worker housing.

What if you have problems?
Find out how to lodge a complaint against an alteration contractor or mobile home manufacturer.

Forms & Publications
Find forms and publications regarding factory-assembled structures.



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