ADU Regulations in Salem, Oregon
Oregon's capital city in Marion County, Salem permits ADUs by right under HB 2001. As a mid-sized city with growing housing demand, Salem's Planning Division processes ADU applications under the state's streamlined by-right framework.
Below is a summary of the key zoning rules applicable to Accessory Dwelling Units in Salem 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 Salem
- ADU by right in residential zones (HB 2001)
- Minimum 200 sq ft
- System development charges apply
- One ADU per lot maximum
📥 Download the Complete Salem 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 Salem, Oregon.
Download the Complete Salem ADU Cheat Sheet — $12Frequently Asked Questions About ADUs in Salem
Can I build an ADU in Salem?
Salem permits ADUs under Oregon's HB 2001 statewide mandate. The process is streamlined with minimal local restrictions.
How big can my ADU be in Salem?
What is the maximum ADU size allowed in Salem? ADUs in Salem 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 Salem planning department before designing your project.
What about setbacks and other requirements in Salem?
What are the setback requirements for an ADU in Salem? ADUs in Salem 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 Oregon cities?