Factory-Assembled Structures

Mobile/Manufactured Homes

Single family residences built to either a state code or the HUD standard.


Find out Washington State requirements for installing a mobile/ manufactured home.

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.

Vendor/Concession Units

Portable structures used as mobile food concession units or mobile medical units.

Commercial Coaches

Portable structures used for temporary commercial purposes.

Modular Buildings

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

Temporary Worker Housing

Structures built for temporary worker housing.

Forms & Publications

Find out how to lodge a complaint against an alteration contractor or mobile home manufacturer.

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