ADU Regulations in Beaverton, Oregon
Updated September 29, 2026
In Washington County west of Portland, Beaverton permits ADUs by right under Oregon's HB 2001. The city's location along the MAX Light Rail line provides transit-oriented development opportunities with potential SDC reductions.
Below is a summary of the key zoning rules applicable to Accessory Dwelling Units in Beaverton as of 2026. Regulations are governed by Oregon's HB 2001 (2019) which requires ADU approval by-right in all residential zones statewide.
| Regulation | Requirement |
|---|---|
| Maximum Size | 1,200 sq ft |
| Property Setbacks | 5 ft rear, 5 ft side |
| Extra Parking Required | Not required |
| Owner Occupancy | Not required |
Additional Local Requirements for Beaverton
- ADU by right in residential zones (HB 2001)
- Minimum 200 sq ft
- MAX light rail proximity may reduce SDCs
- Streamlined permit process available
📥 Download the Complete Beaverton ADU Cheat Sheet
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Can I build an ADU in Beaverton?
Beaverton allows ADUs under Oregon state law. The city provides a streamlined process for standard ADU designs.
What is the maximum ADU size allowed in Beaverton?
ADUs in Beaverton can be up to 1,200 square feet, subject to the property's zoning and lot coverage limits. Always confirm the exact allowed size with the Beaverton planning department before designing your project.
What are the setback requirements for an ADU in Beaverton?
ADUs in Beaverton generally require setbacks of 5 ft rear, 5 ft side. Oregon's HB 2001 (2019) requires cities to allow ADUs in residential zones, but the exact setback figures come from Beaverton's own code — confirm them with the city before you design.
Disclaimer: This guide summarises publicly available city zoning rules and is for general information only — it is not legal or architectural advice. Codes change; always confirm current requirements with the Beaverton planning department before you design or build.