BILL · 2025–26 SESSION · LATEST VERSION EHB 1345

HB 1345: Detached ADU limits

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

Summary

  • Authorizes counties that are required or have chosen to plan under the Growth Management Act to allow detached accessory dwelling units (DADUs) outside of urban growth areas if the DADUs are subject to certain development regulations, the county has certain code enforcement measures in place, and the county takes certain actions to account for DADU development.

From the Engrossed House Bill Report (EHB 1345), written by the Legislature's nonpartisan staff. Read the full report ↗

Enacted Enacted · Chapter 231, Laws of 2026
  1. IntroducedJan 16, 2025
  2. Out of committeeFeb 10, 2025
  3. Passed HouseJan 22, 2026
  4. Passed SenateMar 3, 2026
  5. GovernorMar 27, 2026
  6. LawMar 27, 2026
Prime sponsor
Sam Low (R-39)
Introduced
January 16, 2025 in the House
Last action
March 27, 2026
Session law
Chapter 231, Laws of 2026
Budget
Has a fiscal note
Versions
HB 1345, EHB 1345

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

Sponsors

Prime sponsor: Sam Low (R-39)

4 co-sponsors (4 Democrats, 0 Republicans)

Votes

House · 3rd Reading & Final Passage

Passed January 22, 2026
Version voted on: EHB 1345
86 Yea 5 Nay 0 Absent 7 Excused
PartyYeaNayAbsentExcused
Democrat54005
Republican32502
How each member voted

Yea (86)

Senate · 3rd Reading & Final Passage

Passed March 3, 2026
Version voted on: EHB 1345
33 Yea 15 Nay 0 Absent 1 Excused
PartyYeaNayAbsentExcused
Democrat29001
Republican41500
How each member voted

History

  1. Effective date 6/11/2026. (EHB 1345)
  2. Chapter 231, 2026 Laws. (EHB 1345)
  3. Governor signed. (EHB 1345)
  4. Delivered to Governor. (EHB 1345)
  5. President signed. (EHB 1345)
  6. Speaker signed. (EHB 1345)
  7. Third reading, passed; yeas, 33; nays, 15; absent, 0; excused, 1. (EHB 1345)
  8. Rules suspended. Placed on Third Reading. (EHB 1345)
  9. Placed on second reading by Rules Committee. (EHB 1345)
  10. Passed to Rules Committee for second reading. (EHB 1345)
  11. HSG - Majority; do pass. (EHB 1345)
  12. First reading, referred to Housing. (EHB 1345)
  13. Third reading, passed; yeas, 86; nays, 5; absent, 0; excused, 7. (EHB 1345)
  14. Rules suspended. Placed on Third Reading. (EHB 1345)
  15. Floor amendment(s) adopted. (EHB 1345)
  16. Rules Committee relieved of further consideration. Placed on second reading. (EHB 1345)
  17. By resolution, reintroduced and retained in present status. (EHB 1345)
  18. Returned to Rules Committee for second reading. (EHB 1345)
  19. Rules Committee relieved of further consideration. Placed on second reading. (EHB 1345)
  20. Referred to Rules 2 Review. (EHB 1345)
  21. HOUS - Majority; do pass. (EHB 1345)
  22. HOUS - Executive action taken by committee. (EHB 1345)
  23. First reading, referred to Housing. (EHB 1345)

HB 1345 in other sessions

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

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