ADU Regulations in Corvallis, Oregon
Home to Oregon State University in Benton County, Corvallis permits ADUs by right under Oregon's HB 2001. Student housing demand makes accessory units a practical option for local property owners.
Below is a summary of the key zoning rules applicable to Accessory Dwelling Units in Corvallis 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 Corvallis
- ADU by right in all residential zones (HB 2001)
- Minimum 200 sq ft
- System development charges may apply
📥 Download the Complete Corvallis 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 Corvallis, Oregon.
Download the Complete Corvallis ADU Cheat Sheet — $12Frequently Asked Questions About ADUs in Corvallis
Can I build an ADU in Corvallis?
This Oregon city allows ADUs by right under HB 2001. No owner occupancy requirement and minimal local restrictions.
How big can my ADU be in Corvallis?
What is the maximum ADU size allowed in Corvallis? ADUs in Corvallis 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 Corvallis planning department before designing your project.
What about setbacks and other requirements in Corvallis?
What are the setback requirements for an ADU in Corvallis? ADUs in Corvallis 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.
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