Accessory Structures in Eugene, OR (2026)
8 verified accessory structures rules for Eugene, Oregon, sourced directly from the municipal code and official government pages.
Verified from official government sources
ADU Rules
Eugene permits ADUs per Oregon state law (ORS 197.312). Both attached and detached ADUs are allowed. Detached ADUs up to 800 sq ft. Oregon prohibits cities from requiring owner-occupancy.
Eugene ADU / Accessory Dwelling Unit Rules
Some RestrictionsADU Permits
Eugene allows ADUs in residential zones under Eugene Code (EC) Chapter 9 (Land Use Code), Section 9.2751. The city has progressive ADU-friendly policies aligned with Oregon HB 2001 (2019) and ORS 197.312, which require cities over 10,000 population to permit ADUs on single-family lots. Permits issue through Eugene Planning & Development Permits and Information Center.
Eugene Accessory Dwelling Unit Permits
Few RestrictionsADU Impact Fees
Eugene assesses System Development Charges (SDCs) on new ADUs covering wastewater, stormwater, parks, and transportation. Smaller ADUs receive reduced SDC assessments under Eugene Code Chapter 7 (Public Improvements). State law also imposes the School Construction Excise Tax. Building permit fees scale with construction valuation. Total fees for a typical ADU range from approximately $8,000 to $18,000.
Eugene ADU System Development Charges
Some RestrictionsADU Owner Occupancy
Eugene does not require owner-occupancy for ADU construction or long-term rental. Oregon HB 2001 (2019), codified at ORS 197.312, preempts local owner-occupancy mandates on ADUs in cities over 10,000 population. Oregon HB 3197 (2023) further clarified ADU rental rights. Investor-owned ADUs may be rented to long-term tenants without owner residence.
Eugene ADU Owner-Occupancy Rules
Few RestrictionsADU Rental Restrictions
Eugene ADUs may be rented for long-term use without owner-occupancy under Oregon HB 2001 and HB 3197. Short-term rentals (under 30 days) are regulated by Eugene Code Chapter 9 (Land Use Code) provisions on vacation rentals and require business registration. Statewide rent stabilization and just-cause eviction apply to long-term tenants.
Eugene ADU Rental and Short-Term Restrictions
Some RestrictionsShed Rules
Eugene allows sheds and accessory structures. Small sheds under 200 sq ft and single-story are typically exempt from building permits. Zoning setbacks apply.
Eugene Shed & Outbuilding Rules
Few RestrictionsGarage Conversions
Garage conversions in Eugene require building permits. Oregon ADU law encourages garage-to-ADU conversions and limits parking replacement requirements.
Eugene Garage Conversion Rules
Some RestrictionsCarport Rules
Eugene Land Use Code Chapter 9 treats carports as accessory structures subject to Table 9.2750 development standards. In R-1 (single-family) zones the frontmost support post must sit at least 18 feet from the front lot line - measured through the centerline of the driveway - and at least 5 feet from interior side lot lines. Eaves may project up to 2 feet into an interior yard and 5 feet into the front yard under EC 9.6745.