ADU Permits in Puyallup

Rules for detached (DADU) and attached (AADU) accessory dwelling units in Puyallup, Pierce County.

Free lookup. We’ll resolve your zoning, setbacks, and which ADU types are allowed on your specific parcel.

Choose an ADU type for your parcel

State law (RCW 36.70A.681) requires Puyallup to allow two ADUs on a lot in a single-family zone — one attached and one detached, two attached, or two detached — except on lots with critical areas or their buffers. An address’s own page checks its lot’s zoning.

DADU — Detached

Backyard cottage with its own foundation and roof. Most flexibility on layout.

See DADU rules in Puyallup

AADU — Attached

Part of the house or built onto it: a converted basement or garage, or an addition.

See AADU rules in Puyallup

Pre-approved plans

None in Puyallup on Washington Commerce’s statewide list of pre-approved plan programs (November 2026): an ADU here is drawn for its lot.

The state’s list

Puyallup permit-process facts

Permit department

Submit through the Puyallup permit portal.

Permit portal

ADU permit fees

Set by the Puyallup fee schedule.

Fee schedule

Puyallup prices an ADU's building permit on the value of the work: $643.75 for the first $50,000 plus $7 for each $1,000 more up to $100,000, and $993.75 for the first $100,000 plus $5.60 for each $1,000 more up to $500,000, with plan review added as set in the schedule's Exhibit A. Plumbing is a separate City permit: $40 to issue, and for a one- or two-family dwelling $160 with one bathroom, $200 with two and $240 with three, or $13 for each fixture altered, with plan review at 65% of the plumbing fee. Mechanical work is $40 to issue plus unit fees, such as $19.55 a furnace up to 100,000 Btu/h and $14.10 for duct work to 1 to 5 diffusers. The electrical permit comes from L&I, at L&I's fees (2026 Municipal Fee Schedule). Apply through Puyallup's online permit system, CityView (permits.puyallupwa.gov/Portal); the Permit Services page (puyallupwa.gov/325/Permit-Services) walks through the steps and fees.

Review timeline

Not published by Puyallup.

HB 1337 conformance

Puyallup permits at least two ADUs per single-family lot, with no owner-occupancy requirement and parking limits that respect the HB 1337 ceilings.

Building code: 2021 IBC w/ WA amendments · Residential: 2021 IRC w/ WA amendments · Energy (WSEC): 2021 WSEC

These are Puyallup’s ADU rules as Kolmo reads them; an address’s own page adds its setbacks, easements and critical-area buffers. Source: puyallupwa.gov, last verified 2026-04-29.

ADU permits in Puyallup — FAQ

Does Puyallup allow detached ADUs (DADUs)?

Yes. Washington's HB 1337 (RCW 36.70A.681) requires Puyallup to allow at least two accessory dwelling units on a lot in a single-family zone within the urban growth area, attached or detached in any combination, except on lots with critical areas or their buffers.

What is the maximum ADU size in Puyallup?

State law bars a city from setting a maximum ADU size below 1,000 sq ft of gross floor area (RCW 36.70A.681(1)(f)). Puyallup's own maximum may be higher — the per-parcel page shows it with the city's code citation.