HB 2151 Washington House · 2025-2026 Regular Session

Adopting national standards for factory built housing and commercial structures.

HB 2151 requires Washington state to adopt national safety standards for factory-built housing and commercial structures, specifically aligning with International Code Council (ICC) guidelines for design, construction, and inspections. It directs the Department of Labor & Industries to enforce rules ensuring structural safety and compliance with plumbing, electrical, and energy codes, while allowing qualified inspection agencies (like ICC-certified firms) to conduct inspections. This bill directly affects builders, inspectors, and local enforcement agencies by replacing current state-specific requirements with nationally recognized standards. The law also establishes fee schedules for enforcement and permits fee waivers during emergencies.

Bill status signed all 5 stages cleared

Introduction

Dec 2025

Committee Review

Feb 2026

House Passage

Feb 2026

Senate Passage

Feb 2026

Signed into Law

Mar 2026

Introduced Dec 16, 2025 Signed Mar 9, 2026

Maddy AI version diff · 2 comparisons

What changed between versions

Substitute Bill → Substitute Passed Legislature · 2 edits

MINOR

The document was updated from a draft substitute bill to the final certified version passed by the legislature. This change adds official certification of enrollment, confirming that both the House and Senate approved the bill on specific dates in 2026, and includes signatures from the Chief Clerk and Secretary of State to make it an official law.

TECHNICAL

Added a formal Certification of Enrollment page with dates, vote counts, and signatures from legislative officers to validate the bill as passed law.

Removed the draft bill identifier (H-3179.1) and preliminary formatting, replacing them with the final legislative certificate.

Floor votes · Senate Feb 28, 2026 · House Feb 11, 2026

How they voted

51–0

Passed

Total votes 51

Feb 28, 2026

D Democratic31

31 Yea

100% Yea

R Republican20

20 Yea

100% Yea

Vote distribution

All Yea All Nay Mixed No data

Full legislative history

Actions timeline

Total actions

Key actions

Committee

Mar 9, 2026

Signed into law

Governor signed.

executive

Feb 28, 2026

Upper · Passed

President signed.

upper

Feb 28, 2026

Lower · Passed

Speaker signed.

lower

Feb 20, 2026

Upper · Passed

Minority; without recommendation.

upper

Feb 20, 2026

Upper · Passed

LC - Majority; do pass.

upper

Feb 20, 2026

Upper · Passed

Executive action taken in the Senate Committee on Labor & Commerce at 8:00 AM.

upper

Feb 11, 2026

House · Passed

House Vote: pass (97-0-3)

house

Jan 27, 2026

Committee

Referred to Rules 2 Review.

lower

Jan 23, 2026

Lower · Passed

Executive action taken in the House Committee on Labor & Workplace Standards at 10:30 AM.

lower

Jan 20, 2026

Lower · Passed

Public hearing in the House Committee on Labor & Workplace Standards at 10:30 AM.

lower

1 primary · 13 co-sponsors