ADUs are allowed in Unincorporated JeffersonTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Unincorporated Jefferson, WI
Is your property eligible for an ADU?
# of Parcels
0
Zoning districts
8
Zoning Districts:
37 parcels · 8 districts
A-1
41%(15)
C-2
22%(8)
M-1
16%(6)
P-1
8%(3)
Other
14%(5)
ADU Rules
What can you build in Unincorporated Jefferson, WI?
Unincorporated Jefferson, WI follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.
Eligibility
- –Internal / Attached ADU: Conditional Use Permit
- –Detached ADU: Conditional Use Permit
Interior / Attached ADU Size Limits
- –Maximum size of 1,000 sq ft for an internal or attached ADU
Detached ADU Size Limits
- –Maximum size of 1,000 sq ft
Owner Occupancy
- –Owner must occupy principal structure or ADU as primary residence
Parking
- –2 off-street stalls/ADU; no max; exceptions: must be on the same lot; a single-stall garage or one stall in a multi-stall garage may replace one required space; each stall ≥200 sq ft; residential driveways ≥10 ft wide.
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 Wisconsin municipalities
Rules change at the town line. Check the municipality your property is actually in.
Jefferson County