WA SB6015

Department of Labor and Industries must establish a program to solicit and publish state-approved permit-ready building plans for factory-built housing, including single-family homes, accessory dwelling units, and multi-unit buildings (2-8 units)

Beginning January 1, 2027, cities and counties planning under the Growth Management Act must approve land-use applications using permit-ready plans on qualifying lots that are at least 1,500 square feet, within urban growth areas, residentially zoned, and not in hazard or critical areas

Local governments must exempt permit-ready plans from local code compliance review but may still verify state approval and review site-specific conditions such as soils, slopes, and fire separation distances

Cities and counties must adopt model ordinances developed by the department to streamline implementation, with plan review fees limited to actual staff time and not exceeding standard fees

State and plan creators are shielded from civil liability except upon proof of bad faith or willful misconduct