The Washington State Department of Labor & Industries (L&I) Proposes a Permanent Rule

March 20, 2023

The Washington State Department of Labor & Industries (L&I) proposes a permanent rule to speed review and approval of design plans for factory assembled structures.

The proposed rules allow agency-approved, licensed engineers, architects, or firms, to review plans for the following:

  • Recreational park trailers (also known as park model recreational vehicles and park trailers);
  • Recreational vehicles;
  • Food trucks and trailers (conversion vendor units).

The changes would also update and clarify existing rules for plan review for commercial coaches and factory-built housing and commercial structures.

Why this is happening now

Since 2021, L&I filed a series of emergency rules to address a backlog of design plans in the Factory Assembled Structures Program (FAS). The rule incorporated the use of licensed professionals. It also clarified what a design plan submission must include and how to submit design plans for approval for commercial coaches and factory-built housing and commercial structures.

This rulemaking proposes making permanent rules.

What happens next

L&I formally filed the proposed rules (CR-102) on Feb. 28. You can find the proposed rules here or by going online to the program’s “Laws & Rules” page.

A public hearing on the proposed rules will take place April 4, at 9 a.m. at L&I headquarters, 7273 Linderson Way S.W., Tumwater, WA.

You can also join by either:

Zoom meeting
Click here to join the meeting:
Passcode: FASPH@1!

Or calling

Meeting ID: 864 7704 0744

Passcode: 87842912

The hearing will be held in-person with a virtual and telephonic option. The hearing will continue until all oral comments are received.

You can provide testimony or written comments at the above hearing, or send written comments by 5 p.m. on April 4, to:

  • Alicia Curry
  • Email:
  • Department of Labor & Industries, Field Services & Public Safety Division, PO Box 44400, Olympia, WA 98504-4400
  • Fax: 360-902-5292

If you require communication or accommodation arrangements, please contact Alicia Curry at 360-902-6244, before March 20.

The changes affect rules under:

If adopted, the new rules would take effect April 11, 2023.

If you need additional information or have questions about the rulemaking process, please contact Alicia Curry, at 360-902-6244 or For technical assistance about the proposed rule, please contact us at or call 1-800-705-1411, Option 3.

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