ADUs are allowed in TroyTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Troy, NC
Is your property eligible for an ADU?
# of Parcels
1,673
Zoning districts
18
Avg Parcel Value
$131,291
Median Parcel Size
0.34 acres
Zoning Districts:
1,754 parcels · 18 districts
SFR-3
51%(903)
SFR-2
17%(294)
CIV
7%(129)
IND
5%(88)
Other
19%(340)
ADU Rules
What can you build in Troy, NC?
Troy, 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 the lesser of 900 sq ft or 40% of the principal dwelling’s gross floor area.
- –By variance, maximum size may be the lesser of 1,200 sq ft or 50% of the principal dwelling’s gross floor area.
Detached ADU Size Limits
- –Maximum size of 900 sq ft or 40% of the principal structure’s gross floor area, whichever is less
- –By variance, maximum size of 1200 sq ft or 50% of the principal dwelling unit’s gross floor area, whichever is less
Max Units
- –1 ADU per lot; 0 ADUs on duplex or multifamily principal structures
Parking
- –1 space/ADU; max 2 spaces. On-street frontage may count toward the requirement if not in ROW; ADU parking must be with the principal dwelling's parking unless corner or through lot with a separate ADU drive.
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.
Montgomery County