ADUs are allowed in PendletonTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Pendleton, OR
Is your property eligible for an ADU?
# of Properties
6,801
Owner-occupied
57%
Zoning districts
10
Avg Home Value
$218,972
Median Lot Size
0.17 acres
Avg Income
$70,510
Residential Types:
6,801 housing units
Single Family
7%
2-3 Family
3%
Apts (4+ units)
1%
Other
89%
Zoning Districts:
7,893 parcels · 10 districts
R-2
50%(3,941)
R-1
21%(1,659)
CMU
12%(924)
R-3
6%(491)
Other
11%(878)
ADU Rules
What can you build in Pendleton, OR?
Pendleton, OR follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.
Eligibility
- –Internal / Attached ADU: By Right
- –Detached ADU: By Right
Detached ADU Size Limits
- –Maximum size of 900 sq ft for a detached accessory dwelling unit (including garage conversions, site-built, manufactured, or tiny house ADUs) on residential lots in Pendleton, OR.
Max Units
- –Cottage Cluster (R-2): 0 ADUs
- –Commercial/Industrial caretaker: 1 per lot
Owner Occupancy
- –No owner-occupancy requirement for the ADU.
Parking
- –1 space/ADU; max 1.25 spaces; may be fulfilled with primary residence parking; Central Area Parking District off-street standards do not apply and may be superseded by the River Quarter or other overlays
ADU State Law
What can you build in Oregon?
- –In urban growth areas, Oregon law requires cities and counties to allow at least one ADU on lots zoned for detached single-family homes.
- –Local jurisdictions cannot require owner occupancy for ADUs, but may regulate short-term or vacation rentals.
- –There are no statewide limits on ADU size, height, setbacks, lot size, or floor area ratio. Local zoning rules apply.
- –Parking requirements, if any, are set by the local jurisdiction, subject to state limitations.
- –Some cities may allow more than one ADU per lot, depending on local code.
- –Oregon law does not require counties to allow ADUs in rural residential zones. Whether an ADU is allowed depends on county zoning.
- –ADUs in rural residential areas cannot be used for short-term or vacation rentals.
- –Additional requirements may apply related to wildfire risk, water supply, septic capacity, and fire access.
- –Counties may impose additional restrictions beyond state law or choose not to allow ADUs at all.
- –If a county allows ADUs, state law imposes strict limits, including a minimum 2-acre lot size, a maximum ADU size of 900 sq ft, a location within 100 ft of the primary dwelling, and a limit of one ADU per parcel.
What's allowed on your lot?
These are the municipality-wide rules. What's allowed on a specific property also depends on state laws, setbacks, floor area ratio, lot coverage, environmental constraints, topography, and other property-specific factors. Search your address on FutureLot to see what's allowed on your property.
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Is your property eligible for an ADU?
ADU rules in other Oregon municipalities
Rules change at the town line. Check the municipality your property is actually in.
Umatilla County