ADUs are allowed in DuncanTypes:Detached
Types:Detached
Accessory Dwelling Unit (ADU) Rules for Duncan, OK
Is your property eligible for an ADU?
# of Properties
2,722
Owner-occupied
42%
Zoning districts
1
Avg Home Value
$1,799,553
Median Lot Size
0.25 acres
Avg Income
$68,672
Residential Types:
2,722 housing units
Single Family
6%
Other
94%
Zoning Districts:
9 parcels · 1 district
NZ
100%(9)
ADU Rules
What can you build in Duncan, OK?
Duncan, OK follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.
Eligibility
- –Internal / Attached ADU: Not addressed in the local bylaw
- –Detached ADU: By Right
Max Units
- –R-2 single-family: 1 garage apartment per lot
- –R-2 two-family: 0 per lot
Owner Occupancy
- –Owner-occupancy is not required.
Parking
- –No ADU-specific parking min/max; garage apartments noted but no ratio; Planning Commission determines parking for unlisted uses; ADA spaces must comply with ADA.
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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