ADU Rules: Lakewood vs Tacoma
How do adu rules rules compare between Lakewood, WA and Tacoma, WA?
Lakewood and Tacoma have similar restriction levels.
Lakewood, WA
Pierce County
Lakewood allows 2 ADUs per lot consistent with HB 1337 (2023). Detached ADUs require a minimum 4-foot setback from rear and side yard boundaries. Parking is not required for ADUs within ¼ mile of a Pierce Transit bus route or ½ mile of Sound Transit Lakewood Station.
View full Lakewood rules →Tacoma, WA
Pierce County
Tacoma allows two ADUs per lot in zoning districts that permit residential development. Both attached and detached ADUs (DADUs) are permitted. Living area is limited to 1,000 square feet. No parking is required for ADUs. Tacoma offers pre-approved DADU plans.
View full Tacoma rules →Key Facts Comparison
| Fact | Lakewood | Tacoma |
|---|---|---|
| ADUs Per Lot | 2 (HB 1337) | - |
| Setback (Rear/Side) | 4 feet minimum | - |
| Parking | Waived near transit (¼ mi bus / ½ mi Sound Transit) | Not required |
| HOA Restrictions | Void if created after July 23, 2023 | - |
| Code | LMC 18A.40.110; HB 1337 | - |
| Allowed | - | 2 ADUs per lot |
| Max Size | - | 1,000 sq ft living area |
| Owner Occupancy | - | Not required (HB 1337) |
| Pre-Approved Plans | - | Available for DADUs |
Highlighted rows indicate differences between cities.
Lakewood FAQ
Can I build an ADU on my property in Lakewood?
Lakewood allows 2 ADUs per lot consistent with HB 1337 (2023). Detached ADUs require a minimum 4-foot setback from rear and side yard boundaries. Parking is not required for ADUs within ¼ mile of a Pierce Transit bus route or ½ mile of Sound Transit Lakewood Station.
What are the size limits for an accessory dwelling unit in Lakewood?
ADUs Per Lot: 2 (HB 1337). Setback (Rear/Side): 4 feet minimum. Parking: Waived near transit (¼ mi bus / ½ mi Sound Transit). HOA Restrictions: Void if created after July 23, 2023.
Tacoma FAQ
Can I build an ADU in Tacoma?
Yes. Tacoma allows up to two ADUs per lot in any zone that permits residential use. The living area is capped at 1,000 sq ft. No extra parking or owner occupancy required.
Does Tacoma have pre-approved ADU plans?
Yes. Tacoma offers pre-approved Detached ADU (DADU) plans to speed up the permitting process and reduce design costs.
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