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HB 2151

Adopting national standards for factory built housing and commercial structures.

2025-2026 Regular Session Introduced by Beth Doglio and 13 co-sponsors

HB 2151 aligns Washington's factory-built housing and commercial building standards with national standards to reduce regulatory costs and streamline construction approval processes.

Effective date 6/11/2026.
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Bill Summary · HB 2151

Legislative bill overview

HB 2151 would align Washington state's regulatory standards for factory-built housing and commercial structures with national standards. This standardization aims to streamline construction processes and reduce regulatory fragmentation between state and federal requirements. The bill passed its committee stage in February 2026 with majority support.

Why is this important

Factory-built housing is an increasingly significant portion of the housing market, and regulatory misalignment between states creates compliance costs that ultimately increase housing prices. Adopting national standards could reduce construction delays, lower production costs, and potentially improve housing affordability while maintaining safety. Conversely, this represents a shift toward federal regulatory harmonization that some view as reducing state autonomy.

Potential points of contention

  • State vs. federal authority: Critics may argue that adopting national standards diminishes Washington's ability to set independent safety or environmental requirements tailored to regional needs
  • Labor standards and wages: Labor unions and worker advocates may worry that national standards could override Washington's stricter prevailing wage or workplace safety requirements for factory-built housing
  • Implementation costs: Local jurisdictions and inspectors may face expenses retraining staff or updating infrastructure to comply with new standards, raising local government concerns

Compiled from official sources — confirm details with the bill’s official record.

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