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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2016 FAS Rule Development

The Factory Assembled Structures (FAS) Program has adopted amendments to Chapter 296-150V WAC, Conversion Vendor Units and Medical Units as a result of Substitute House Bill (SHB) 2443 (Chapter 167, Laws of 2016), which passed the legislature in 2016. The bill requires used conversion vending units (food trucks) and medical units that are manufactured in other states and have been used for six months or more to comply with the applicable permitting, inspection, and plan review requirements administered by the program. Please refer to the following documentation for details.

Information Packet (27 KB Word).

Adoption (Rule-Making Order CR-103) (123 KB PDF).

The following are the new rule changes: Chapter 296-150V WAC Language (141 KB PDF).

The effective date of the rules is June 21, 2016.


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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