ADU Regulations in Burien, Washington
Just south of Seattle in King County, Burien permits ADUs under Washington's HB 1337. The city's transit-oriented zones near Sound Transit provide parking exemptions for accessory units.
Below is a summary of the key zoning rules applicable to Accessory Dwelling Units in Burien as of 2026. Regulations are governed by Washington's HB 1337 (2023) which limits local ADU restrictions statewide.
| Regulation | Requirement |
|---|---|
| Maximum Size | 1,000 sq ft |
| Property Setbacks | 5 ft rear, 5 ft side |
| Extra Parking Required | Not required (near transit) |
| Owner Occupancy | Not required |
Additional Local Requirements for Burien
- ADU by right in residential zones
- Minimum 200 sq ft
- WA HB 1337 limits local restrictions
📥 Download the Complete Burien ADU Cheat Sheet
Get the step-by-step permit checklist, official government forms, direct planning department contacts, and estimated fees — all in one printable PDF for Burien, Washington.
Download the Complete Burien ADU Cheat Sheet — $12Frequently Asked Questions About ADUs in Burien
Can I build an ADU in Burien?
This Washington city follows HB 1337 which limits local ADU restrictions. Parking may be waived near transit.
How big can my ADU be in Burien?
What is the maximum ADU size allowed in Burien? ADUs in Burien can be up to 1,000 square feet, subject to the property's zoning and lot coverage limits. Always confirm the exact allowed size with the Burien planning department before designing your project.
What about setbacks and other requirements in Burien?
What are the setback requirements for an ADU in Burien? ADUs in Burien generally require setbacks of 5 ft rear, 5 ft side. California state law (AB 68) limits local setback requirements to 4 feet for existing structures, but always verify with local zoning.
Looking for other Washington cities?