ADU rules in Puyallup, WA — also called accessory dwelling unit regulations or granny flat ordinances — cover setbacks, owner-occupancy, parking, and permit requirements.
Puyallup allows 2 ADUs per lot in all residential zones consistent with HB 1337 (2023). ADUs are limited to 1,000 sq ft of interior habitable area. No owner-occupancy requirement. Detached ADUs must meet zoning setback standards. Building permits are required.
Under HB 1337 (effective July 2023), Puyallup must allow at least two ADUs per single-family lot in all GMA-planning residential zones. ADUs may be attached or detached. No owner-occupancy requirements may be imposed. Maximum ADU size is 1,000 sq ft of interior habitable area. Impact fees are capped at 50% of principal dwelling fees. Setbacks for detached ADUs follow zoning district standards. Building permits and utility connections are required. The 60-day approval timeline applies per state law.
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.
Puyallup, WA
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