ADUs are allowed in Onalaska CityTypes:Detached
Types:Detached
Accessory Dwelling Unit (ADU) Rules for Onalaska City, WI
Is your property eligible for an ADU?
# of Properties
5,620
Owner-occupied
83%
Zoning districts
16
Avg Home Value
$291,014
Median Lot Size
0.26 acres
Avg Income
$98,179
Residential Types:
5,620 housing units
Other
100%
Zoning Districts:
6,757 parcels · 16 districts
R-2
43%(2,880)
R-1
33%(2,207)
R-4
11%(732)
MU-N
3%(194)
Other
11%(744)
ADU Rules
What can you build in Onalaska City, WI?
Onalaska City, WI follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.
Eligibility
- –Internal / Attached ADU: Not permitted
- –Detached ADU: By Right
Detached ADU Size Limits
- –Maximum size of 800 sq ft for a detached accessory dwelling unit
Max Units
- –R-1, R-2, MU-N: 1 ADU per lot; All other base districts: 0 per lot (ADUs prohibited).
Owner Occupancy
- –Owner must occupy either the principal or ADU, with approved temporary absence.
Parking
- –3 total off-street spaces on the lot (1 per ADU + 2 for the principal); off-street only; may be on or off-lot by recorded agreement; off-lot spaces within 200 ft; tandem parking allowed for single- and two-family dwellings; in R-1/R-2, parking must be in the driveway or on an approved hard surface.
Rental Restrictions
- –Short-term/vacation rentals prohibited for ADUs
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.
La Crosse County