BILL · 2025–26 SESSION · LATEST VERSION SHB 1353

HB 1353: ADU self-certification

Establishing a self-certification program for accessory dwelling unit project permit applications.

Summary

Allows cities planning under the Growth Management Act to operate self-certification programs through which registered architects can certify compliance with applicable building codes for the construction or development of detached accessory dwelling units.
Requires each city operating a self-certification program to adopt rules and a self-certification form for its program, and provides minimum requirements that must be included in the rules and on the form.
Requires each city operating a self-certification program to provide a report on its program to the Department of Commerce by July 31, 2028, and requires the Department of Commerce to summarize the information received from cities and submit a report to the Legislature by December 31, 2028.

From the Substitute House Bill Report (SHB 1353), written by the Legislature's nonpartisan staff. Read the full report ↗

Enacted Enacted · Chapter 22, Laws of 2025

AN ACT Relating to establishing a self-certification program for accessory dwelling unit project permit applications;

Passed March 4, 2025

Version voted on: SHB 1353

94 Yea 1 Nay 0 Absent 3 Excused

Party	Yea	Nay	Absent	Excused
Democrat	56	0	0	3
Republican	38	1	0	0

How each member voted

Passed March 26, 2025

Version voted on: SHB 1353

49 Yea 0 Nay 0 Absent 0 Excused

Party	Yea	Nay	Absent	Excused
Democrat	30	0	0	0
Republican	19	0	0	0

How each member voted

Apr 7, 2025Effective date 7/27/2025. (SHB 1353)
Apr 7, 2025Chapter 22, 2025 Laws. (SHB 1353)
Apr 7, 2025Governor signed. (SHB 1353)
Apr 2, 2025Delivered to Governor. (SHB 1353)
Mar 31, 2025Speaker signed. (SHB 1353)
Mar 31, 2025President signed. (SHB 1353)
Mar 26, 2025Third reading, passed; yeas, 49; nays, 0; absent, 0; excused, 0. (SHB 1353)
Mar 26, 2025Rules suspended. Placed on Third Reading. (SHB 1353)
Mar 21, 2025Placed on second reading by Rules Committee. (SHB 1353)
Mar 20, 2025Passed to Rules Committee for second reading. (SHB 1353)
Mar 19, 2025HSG - Majority; do pass. (SHB 1353)
Mar 6, 2025First reading, referred to Housing. (SHB 1353)
Mar 4, 2025Third reading, passed; yeas, 94; nays, 1; absent, 0; excused, 3. (SHB 1353)
Mar 4, 2025Rules suspended. Placed on Third Reading. (SHB 1353)
Mar 4, 20251st substitute bill substituted. (SHB 1353)
Mar 4, 20251st substitute bill substituted.
Feb 28, 2025Rules Committee relieved of further consideration. Placed on second reading. (SHB 1353)
Feb 28, 2025Rules Committee relieved of further consideration. Placed on second reading.
Feb 13, 2025Referred to Rules 2 Review. (SHB 1353)
Feb 13, 2025Referred to Rules 2 Review.
Feb 12, 2025LG - Majority; 1st substitute bill be substituted, do pass. (SHB 1353)
Feb 12, 2025LG - Executive action taken by committee.
Feb 12, 2025LG - Majority; 1st substitute bill be substituted, do pass.
Jan 16, 2025First reading, referred to Local Government.

Bill numbers restart every two years, so the same number is a different bill in each session.

HB 1353 (2023–24) School district elections · Did not pass · died in committee
HB 1353 (2021–22) Main street program/access · Did not pass · died in committee
HB 1353 (2019–20) Accessory dwelling units · Did not pass · died in committee
HB 1353 (2017–18) Elk management pilot project · Enacted · Chapter 244, Laws of 2017
HB 1353 (2015–16) Good samaritan/disease tests · Did not pass · stalled on the House floor
HB 1353 (2013–14) Mediation/family law cases · Did not pass · died in committee
HB 1353 (2011–12) Pharmacy technicians · Enacted · Chapter 71, Laws of 2011
HB 1353 (2009–10) Higher education employment · Did not pass · died in committee