Factory-Assembled Structures

The Washington Administrative Code (WAC) or Revised Code of Washington (RCW) are maintained and updated by the State Office of the Code Reviser (slc.leg.wa.gov).

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2015 FAS rule development

The Factory Assembled Structures (FAS) program is planning amendments to Chapter 296-150M WAC, Manufactured Homes.  The proposed changes include

  • updating safety code requirements and industry standards for manufactured and mobile homes,
  • clarifying the existing rules to improve safety and reflect current practices,
  • amending the rules to comply with statutory requirements, and
  • correcting grammatical and reference issues.

The following is draft language of proposed rule changes: Chapter 296-150M WAC Draft Language (410 KB PDF).

If you have any preliminary input on the proposed rule changes, please send your feedback to Alicia Curry.

You will also have the opportunity to provide your comments during the public comment period. We would appreciate your comments on the draft rules by Tuesday, June 30, 2015.

The next step in the process is to file a CR-101, which conveys L&I's intent to explore changes to existing FAS rules. L&I will send a notice of filing the CR-101 at the end of July.

The FAS Advisory Committee members will meet to review the proposed rule change proposals and provide advice to L&I on August 20, 2015, at 1 p.m. in the L&I Tumwater building, Room S129.


Revised Code of Washington (RCW)

Code of Federal Regulations


Washington Administrative Code (WACs)

  • Commercial Coaches - WAC 296-150C (app.leg.wa.gov).
  • Factory-Built Housing and Commercial Structures - WAC 296-150F (app.leg.wa.gov).
  • Manufactured Homes - WAC 296-150M (app.leg.wa.gov).
  • Manuafactured Home Installer Certification – WAC 296-150I (app.leg.wa.gov).
  • Recreational Park Trailers - WAC 296-150P (app.leg.wa.gov).
  • Recreational Vehicles - WAC 296-150R (app.leg.wa.gov).
  • Factory Built Temporary Worker Housing Structures - WAC 296-150T (app.leg.wa.gov).
  • Concession Units and Medical Units -  WAC 296-150V (app.leg.wa.gov).
  • Temporary Worker Housing Construction Standard - WAC 246-359 (app.leg.wa.gov).

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