How many ADUs can I build on a small Puyallup lot?
✓ Verified against code · August 20, 2026
On a lot that meets the zone's required area, two, in any combination. On an undersized lot the default is one — but two are still possible in three specific configurations: stacked units, one attached plus one detached, or converting an existing structure and adding a new unit. So an undersized lot is not automatically a one-ADU lot.
Citation: PMC 20.20.010(11)(a)–(c)
How current is this?
Puyallup’s ADU rules run under PMC 20.20.010(11) (Accessory Dwelling Units) (Ordinance 3341 (building on Ord 3324)). Puyallup adopted its HB 1337 baseline in Ordinance 3324 in 2025, then restructured the ADU standards again in Ordinance 3341, effective April 28, 2026. Its parking rule is the most granular in this ledger — it scales with both lot size and bedroom count — and its ADU height, at up to 36 ft, is among the most generous in Washington. We verified this answer against primary sources on August 20, 2026, and every change we catch is logged in the changelog.
More Puyallup ADU questions
- Do I need parking for a Puyallup ADU?
- How tall can a detached Puyallup ADU be?
- Can I sell a Puyallup ADU separately?
- Does a Puyallup ADU count against density?
All Puyallup ADU rules → · Compare Washington cities →
Not legal advice — lot-specific overlays can change the answer for your parcel. The citation above points at the governing code section; check it, or ask the city to confirm.