ADUs are allowed in Oak RidgeTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Oak Ridge, NC
Is your property eligible for an ADU?
# of Properties
3,407
Owner-occupied
76%
Zoning districts
27
Avg Home Value
$547,444
Median Lot Size
1.05 acres
Avg Income
$158,943
Residential Types:
3,407 housing units
Single Family
1%
Other
99%
Zoning Districts:
3,782 parcels · 27 districts
RS-40
46%(1,740)
AG
21%(782)
RS-30
14%(538)
CZ-PD-R
4%(170)
Other
15%(552)
ADU Rules
What can you build in Oak Ridge, NC?
Oak Ridge, NC 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 25% of the principal building’s heated floor area, and in any case cannot exceed 25% of the building’s total floor area.
Detached ADU Size Limits
- –Maximum size is 50% of the gross floor area of the principal building.
Max Units
- –Single-family: 1 ADU per lot (internal or detached)
- –Duplex/multifamily/family care home: 0 ADUs
Owner Occupancy
- –Owner occupancy not required
Parking
- –1 space/ADU (in addition to the principal dwelling’s requirement); single-family detached dwellings require 2 spaces on the same lot; five-space minimum not applicable to residential uses; paving not required for residential uses with ≤6 spaces
ADU State Law
What can you build in North Carolina?
- –North Carolina does not have a statewide ADU mandate; ADU rules are set by individual municipalities.
- –Building/fire codes are set statewide, but whether an ADU is allowed is local zoning.
- –There is active proposed legislation (H627 / S495, "Regulation of Accessory Dwelling Units") that would create G.S. 160D-917 and require local governments to allow at least one ADU in certain single-family areas, but it is not enacted.
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 North Carolina municipalities
Rules change at the town line. Check the municipality your property is actually in.
Guilford County