Accessory Structures in Puyallup, WA: What Residents Actually Need to Know

If you live in Puyallup or are thinking about moving there, accessory structures are one of those things you probably won't think about until they affect you directly. Puyallup has 3 specific rules on the books covering different aspects of accessory structures, and some of them might surprise you.

Shed Rules

Sheds and accessory structures in Puyallup require a building permit if over 200 sq ft or if including electrical or plumbing. Structures must meet zone setback requirements from property lines under PMC Title 20.

Key details: Permit Required: Over 200 sq ft or electrical/plumbing. Setbacks: Per zoning district (PMC Title 20). Topic: Shed Rules. Category: Accessory Structures.

Unpermitted structures receive a notice to either obtain a retroactive permit (with double fees) or remove the structure within 60 days. Fines of $100–$500 apply for non-compliance.

ADU Rules

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.

Key details: ADUs Per Lot: 2 (HB 1337). Max Size: 1,000 sq ft habitable. Owner-Occupancy: Not required (HB 1337). Impact Fees: Capped at 50% of principal unit fee. Code: HB 1337; PMC Title 20.

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.

Garage Conversions

Garage conversions to habitable space in Puyallup require a building permit and must meet residential code standards. Conversion to an ADU is permitted under HB 1337 and PMC Title 20 provisions. Parking replacement requirements depend on zone.

Key details: Permit Required: Yes (building permit). ADU Conversion: Permitted under HB 1337. Parking: May be required depending on zone. Topic: Garage Conversions.

Unpermitted garage conversions face fines of $500–$2,000, mandatory permit acquisition (double fees), and may need to be restored to garage use if code requirements cannot be met.

The Bottom Line

Puyallup's accessory structures rules are a mixed bag. Some areas are strict, others are relaxed, and the details matter. The best approach is to check the specific rule that applies to your situation rather than assuming Puyallup is broadly strict or permissive.

Keep in mind that Puyallup can amend these rules at any council meeting. For the most current version of any rule mentioned here, check the specific ordinance page, where we track updates as they happen.