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Washington · 2025-2026 Biennium (69th Legislature)

Establishing limitations on detached accessory dwelling units outside of urban growth areas.

AN ACT Relating to establishing limitations on detached accessory dwelling units outside of urban growth areas;

EHB 1345·House·Bill
Rep. Sam LowState House · LD-39·4 cosponsors
Fiscal noteState YesLocal Yes
Effective dateJune 11, 2026
Primary sponsor
Sam LowSam LowState House · LD-39
Cosponsors
Strom PetersonStrom PetersonState House · LD-21Steve TharingerSteve TharingerState House · LD-24Greg NanceGreg NanceState House · LD-23Mia GregersonMia GregersonState House · LD-33
Floor votes
House · 3rd Reading & Final Passage · EHB 1345Jan 22, 202686–5
Senate · 3rd Reading & Final Passage · EHB 1345Mar 3, 202633–15
Legislative history
Jan 16, 2025
First reading, referred to Housing.
Feb 6, 2025
HOUS - Executive action taken by committee.
Feb 6, 2025
HOUS - Majority; do pass.
Feb 10, 2025
Referred to Rules 2 Review.
Mar 6, 2025
Rules Committee relieved of further consideration. Placed on second reading.
Mar 19, 2025
Returned to Rules Committee for second reading.
Jan 12, 2026
By resolution, reintroduced and retained in present status.
Jan 19, 2026
Rules Committee relieved of further consideration. Placed on second reading.
Jan 22, 2026
Floor amendment(s) adopted.
Jan 22, 2026
Rules suspended. Placed on Third Reading.
Jan 22, 2026
Third reading, passed; yeas, 86; nays, 5; absent, 0; excused, 7.
Jan 26, 2026
First reading, referred to Housing.
Feb 18, 2026
HSG - Majority; do pass.
Feb 19, 2026
Passed to Rules Committee for second reading.
Feb 24, 2026
Placed on second reading by Rules Committee.
Mar 3, 2026
Rules suspended. Placed on Third Reading.
Mar 3, 2026
Third reading, passed; yeas, 33; nays, 15; absent, 0; excused, 1.
Mar 4, 2026
Speaker signed.
Mar 4, 2026
President signed.
Mar 6, 2026
Delivered to Governor.
Mar 27, 2026
Governor signed.
Mar 27, 2026
Chapter 231, 2026 Laws.
Mar 27, 2026
Effective date 6/11/2026.
Bill text
Original BillEngrossed BillBill as Passed Legislature
Amendments
Floor amendment by Peterson (Not considered)Floor amendment by Peterson (Adopted)Floor amendment by Schoesler (Not adopted)Floor amendment by Short (Not adopted)Floor amendment by Wagoner (Withdrawn)
Bill reports
House Bill Analysis 2025 — Initial House Analysis 01-27-25House Bill Report — Reported by HOUS 02-06-25Engrossed House Bill Report — Passed House 01-22-26Engrossed Senate Bill Report (Orig.) — Initial Bill Report 02-04-26Engrossed Senate Bill Report — Testimony Added 02-04-26Engrossed Senate Bill Report — Reported by HSG 02-18-26Engrossed Senate Bill Report — Passed Senate 03-03-26Final Bill Report — Final Bill Report 2026Engrossed House Bill Report — Passed Legislature
Session law
Chapter 231, Laws of 2026
Where it stands
In committee — the House
On the floor — the House
In committee — the Senate
On the floor — the Senate
Resolving differences
With the Governor
Became lawChapter 231, Laws of 2026
Path for a House bill