ADUs are allowed in Klamath FallsTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Klamath Falls, OR
Is your property eligible for an ADU?
# of Properties
8,520
Owner-occupied
59%
Zoning districts
26
Avg Home Value
$264,453
Median Lot Size
0.17 acres
Avg Income
$59,495
Residential Types:
8,520 housing units
Apts (4+ units)
3%
Condos
1%
Other
96%
Zoning Districts:
10,754 parcels · 26 districts
MD
32%(3,477)
SF
29%(3,172)
PUD
12%(1,238)
A
9%(923)
Other
18%(1,944)
ADU Rules
What can you build in Klamath Falls, OR?
Klamath Falls, 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
- –Maximum size is 50% of the primary dwelling’s gross floor area (garage and detached buildings excluded).
Detached ADU Size Limits
- –Maximum size of 50% of the gross floor area of the primary single-family dwelling, excluding garage and other detached accessory buildings.
Max Units
- –Single-family: 1 ADU per lot (detached/attached/internal)
Owner Occupancy
- –No owner-occupancy requirement.
Parking
- –No ADU off-street parking; exempt from covered parking (garage/carport) requirements.
Rental Restrictions
- –Only one unit may be an STR on a property with an ADU.
- –STR density cap: <=10% within 250 ft.
- –No STR in a unit if any room is rented long-term.
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.
Klamath County