Laws, Rules, and Policies

The Washington Administrative Code (WAC) and Revised Code of Washington (RCW) are maintained and updated by the State Office of the Code Reviser (

If you receive an error message when referencing a link to a specific section of a WAC or RCW, try your search at the Washington State Legislative Search page (

2017 FAS Rule Development

The Washington State Department of Labor & Industries is establishing a penalty schedule for infractions for manufactured home installations and modifying the existing rules to comply with new state laws. The changes would be to chapter 296-150I WAC, Manufactured Home Installer Training and Certification Program as a result of House Bill (HB) 1329 (Chapter 10, Laws of 2017), which passed the Legislature in 2017.

The following are the rulemaking documents:

Here's what happens next:

  • A public hearing on the proposed rule is scheduled for October 16, 2017, at 9 a.m..The meeting will take place at the L&I headquarters, 7272 Linderson Way SW Tumwater.
  • Upon approval, the rules will be adopted and submitted to the Code Reviser’s Office.
  • After adoption, the new rule would take effect Jan. 1, 2018.

For more information

Get an overview of the L&I rulemaking process. A glossary of terms can help in understanding the rulemaking/code adoption process.


Revised Code of Washington (RCW)

Code of Federal Regulations

Rules and policies

Washington Administrative Code (WACs)

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

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