Establishing limitations on detached accessory dwelling units outside of urban growth areas.
Effective date 6/11/2026.
Summary
The bill allows counties to permit detached accessory dwelling units (DAUs) outside urban growth areas only if they meet a series of size, water, sewage, siting, and reporting requirements. It caps one DAU per parcel, limits its size, enforces water‑use rules, and imposes penalties for non‑compliance. Counties must also track DAU permits and limit how many can be built relative to rural population targets.
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