

ADU rules for Unincorporated Marathon
Accessory Dwelling Unit (ADU) Rules for Unincorporated Marathon, WI
Is your property eligible for an ADU?
# of Parcels
1
Zoning districts
9
Zoning Districts:
69 parcels · 9 districts
NZ
32%(22)
G-A
19%(13)
FP
17%(12)
OAR
9%(6)
Other
23%(16)
ADU Rules
What can you build in Unincorporated Marathon, WI?
Unincorporated Marathon, WI 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: Not permitted
Parking
- –2 spaces/ADU; max 4 spaces (200% of min); cap does not apply to single-family or two-family dwellings; shared parking within 500 ft; Board of Adjustment may modify minimums
Rental Restrictions
- –Detached accessory buildings shall not be used as a separate dwelling unit.
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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Is your property eligible for an ADU?
ADU rules in other Wisconsin municipalities
Rules change at the town line. Check the municipality your property is actually in.
Marathon County