ADUs are allowed in Unincorporated JacksonTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Unincorporated Jackson, OR
Is your property eligible for an ADU?
# of Properties
24,539
Owner-occupied
58%
Zoning districts
100
Avg Home Value
$472,862
Median Lot Size
1.95 acres
Avg Income
$84,968
Residential Types:
24,539 housing units
Single Family
17%
2-3 Family
3%
Apts (4+ units)
76%
Other
4%
Zoning Districts:
41,926 parcels · 100 districts
RR-5
20%(8,448)
EFU
20%(8,292)
WR
12%(4,829)
FR
10%(4,199)
Other
39%(16,158)
ADU Rules
What can you build in Unincorporated Jackson, OR?
Unincorporated Jackson, 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
Interior / Attached ADU Size Limits
- –Countywide maximum of 900 sq ft of usable ADU floor area (excludes White City WCUR-4/6/8).
- –White City (WCUR-4, WCUR-6, WCUR-8): maximum ADU size of 800 sq ft.
- –White City (WCUR-4, WCUR-6, WCUR-8): maximum ADU size of 50% of the principal dwelling’s habitable floor area.
Detached ADU Size Limits
- –Maximum ADU size of 900 sq ft countywide; within White City, the ADU may not exceed the lesser of 800 sq ft or 50% of the principal dwelling's habitable floor area.
Max Units
- –Inside UGB: 1 ADU per detached single-family dwelling.
- –Outside UGB (RR districts): 1 ADU per lot/parcel.
- –White City (WCUR-4/6/8): 1 ADU per lot.
Owner Occupancy
- –There is no owner-occupancy requirement.
Parking
- –2 spaces/ADU; max 3 spaces/ADU for the first 2 units and 2 spaces/ADU for each additional unit; in White City UR districts, at least 1 off-street ADU space is required in addition to the primary dwelling’s parking; within 1/4 mile of transit, min may be reduced by 25%; shared/off-site parking allowed; outside White City, no ADU-specific parking beyond general residential standard.
Rental Restrictions
- –Short-term/vacation rentals prohibited; require recorded deed declaration prohibiting vacation occupancy before permits.
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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ADU rules in other Oregon municipalities
Rules change at the town line. Check the municipality your property is actually in.
Jackson County