EHB 1345 — Establishing limitations on detached accessory dwelling units outside of urban growth areas.

What this bill does

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 Washington State Legislature's nonpartisan staff bill analysis. Read the full analysis ↗

Floor votes

• House — 3rd Reading & Final Passage · January 22, 2026
  86 yea · 5 nay · 7 not voting
• Senate — 3rd Reading & Final Passage · March 3, 2026
  33 yea · 15 nay · 1 not voting

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