ADUs are allowed in NehalemTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Nehalem, OR
Is your property eligible for an ADU?
# of Properties
222
Owner-occupied
34%
Zoning districts
7
Avg Home Value
$150,917
Median Lot Size
0.18 acres
Avg Income
$57,337
Residential Types:
222 housing units
RESIDENTIAL IMPROVED, ZONED RE
100%
Zoning Districts:
308 parcels · 7 districts
RM
60%(186)
C
20%(61)
RL
12%(37)
MR
5%(16)
Other
3%(8)
ADU Rules
What can you build in Nehalem, OR?
Nehalem, 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 of 800 sq ft or 75% of the primary residence’s floor area, whichever is less (applies to attached additions; internal remodel ADUs have no sq-ft cap).
Detached ADU Size Limits
- –Maximum size is the lesser of 75% of the primary residence floor area or 800 sq ft.
Max Units
- –Single-family lot: 1 ADU per lot or parcel
Owner Occupancy
- –Owner-occupancy not required for ADUs
Parking
- –No ADU-specific parking minimum/maximum; citywide rules apply; Commercial zone along US-101 exempt from off-street parking.
Rental Restrictions
- –Short-term rentals allowed in ADUs if compliant with Chapter 116 STR license regulations; no other rental term limits stated.
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.
Tillamook County