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Contact Us About Factory-Assembled Structures

Who to contact if you have questions or issues about a factory assembled structure or manufactured home?

Who to contact if you have questions or issues about factory-assembled structures…
  • Conversion Vendor & Medical Units.
  • Commercial Coaches.
  • Factory Assembled Residential & Commercial Structures.
  • Recreational Park Trailers.
  • Recreational Vehicles.
  • Temporary Worker Housing.
  • Manufactured Home Alternative Construction (AC) Inspection.
  • Permits & Inspections.
  • Mobile/Manufactured Home Alteration.

    For plan review questions or issues relating to the manufacturer:

    refer to the appropriate Washington Administrative Code (WAC) and contact:

    Department of Labor & Industries
    Factory Assembled Structures
    7273 Linderson Way SW
    PO Box 44430
    Olympia, WA 98504-4430
    Fax: 360-902-5229

Who to contact if you have questions or issues about a manufactured home…

Manufactured Homes. (HUD units built after June 15, 1976)

  • Manufactured Home Installer Training and Certification Program. 800-647-0982, Option 5
  • State Administrative Agency (SAA). 800-647-0982, Option 6.
  • Technical Specialist. 360-902-5225

For issues relating to installation or construction defects:

Department of Labor & Industries
Installer/SAA Program
7273 Linderson Way SW
PO Box 44420
Olympia, WA 98504-4420
Fax: 360-902-5229

For complaints relating to…

Unfair business practices:

Office of the Attorney General (

A dealer:

Department of Licensing (

If you have..

Problems with this section of the website or suggestions for improving it.

360-902-5860 or

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