ADUs are allowed in Unincorporated JeffersonTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Unincorporated Jefferson, WV
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# of Properties
21,044
Owner-occupied
82%
Zoning districts
20
Avg Home Value
$264,997
Median Lot Size
0.62 acres
Avg Income
$103,010
Residential Types:
21,044 housing units
Single Family
71%
2-3 Family
1%
Apts (4+ units)
1%
Other
27%
Zoning Districts:
24,770 parcels · 20 districts
R
72%(17,730)
RG
19%(4,745)
R-LI-C
5%(1,173)
V
3%(731)
Other
2%(391)
ADU Rules
What can you build in Unincorporated Jefferson, WV?
Unincorporated Jefferson, WV 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 in-home apartment size of 1,700 heated square feet (gross floor area).
- –The in-home apartment must be smaller than the principal dwelling; its area cannot exceed the principal dwelling’s size.
Detached ADU Size Limits
- –Maximum detached ADU size is 1,700 sq ft of heated floor area.
- –The detached ADU must be secondary to the principal dwelling and cannot exceed the home’s gross floor area.
- –Detached ADUs are allowed only on lots at least 2 acres (87,120 sq ft); if smaller, no detached ADU area is permitted.
Owner Occupancy
- –Owner or immediate family must occupy either the principal or ADU
Parking
- –No numeric ADU parking requirement; only 'sufficient parking' for In-Law Suite and no per-ADU rate in Residential Parking Standards.
Rental Restrictions
- –Non-relatives cannot rent an In‑Law Suite/Detached ADU unless a Special Exception is granted; Accessory Agricultural Dwelling Unit cannot be rented to the general public or for short‑term/vacation use, occupancy limited to farmworker/caretaker and family.
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 West Virginia municipalities
Rules change at the town line. Check the municipality your property is actually in.
Jefferson County