WA HB2151

Requires the Department of Labor and Industries to consider International Code Council national consensus standards for off-site construction planning, design, fabrication, assembly, inspections, and regulatory compliance when adopting rules for factory built housing and commercial structures

Updates building code references from "uniform" building code to "international" building code while retaining uniform plumbing and adding international mechanical codes

Removes the department's ability to directly delegate inspection duties to qualified inspection agencies, instead allowing rules to include options for qualified inspection agency inspections

Establishes requirements for qualified inspection agencies including objectivity, competence, independence from companies being inspected, adequate equipment, experienced personnel, and disclosure of conflicts of interest

Recognizes International Code Council certification as meeting personnel certification requirements for qualified inspection agencies