ADU rules in Edmonds, WA — also called accessory dwelling unit regulations or granny flat ordinances — cover setbacks, owner-occupancy, parking, and permit requirements.
Edmonds City Council adopted an ADU code update on June 11, 2024, complying with state HB 1337. Up to 2 ADUs (attached and/or detached) are allowed per single-family lot. Maximum ADU size: 1,200 sq ft. Maximum height: 24 ft. No owner-occupancy requirement. Impact fees capped at 50% of principal unit. Building permit required.
ECDC Chapter 20.21 governs ADUs. Edmonds ADU code updates align with HB 1337 mandates: 2 ADUs per lot by right, no owner-occupancy requirement, reduced rear setbacks, no parking for ADUs within ½ mile of transit. ECDC 20.23 covers bed and breakfasts. This adu rules rule under Edmonds's accessory structures ordinances applies to properties within Edmonds city limits. For current statutory text, amendments, enforcement procedures, fines, appeal options, and any exemptions that may apply to your situation, contact Edmonds code enforcement directly or consult the official Washington municipal code library. Ordinances change periodically; always verify with local staff before relying on summary information.
Unpermitted ADUs face stop-work orders and removal or legalization requirements. Fines of $500–$2,000 apply for unpermitted construction. Properties with illegal ADUs may face title issues at sale.
Edmonds, WA
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Edmonds, WA
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Side-by-side rule comparisons with other cities in Snohomish County.
See how other cities in Snohomish County handle adu rules.
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