OLYMPIA – A new legislative proposal aims to fast-track the construction of accessory dwelling units (ADUs) by cutting red tape in the permitting process. House Bill 1353, introduced by Rep. Alex Ramel (D-Bellingham) would create a voluntary self-certification program, allowing registered architects to certify compliance with building codes for detached ADUs in cities governed by the Growth Management Act (GMA).
By streamlining approvals, the bill seeks to reduce costs, ease the burden on local permitting offices, and help address Washington’s housing crisis. Under HB 1353, participation in the program is optional for cities. Only registered architects can self-certify detached ADU projects, ensuring compliance with applicable building codes. To maintain oversight, cities must conduct random audits on at least 20 percent—or a minimum of five—self-certified applications annually. Additional audits may be conducted at the city’s discretion.
Rep. Ramel emphasized that “self-certification empowers architects to take responsibility for compliance while incorporating necessary checks and audits to uphold standards.” He added, “By shifting some of the permitting burden to qualified professionals, we can speed up ADU construction while maintaining accountability.”
House Bill 1353 passed the House with a vote of 94-1 and awaits further consideration by the Senate.