

ADUs are allowed in Oak Creek CityTypes:Internal
Types:Internal
Accessory Dwelling Unit (ADU) Rules for Oak Creek City, WI
Is your property eligible for an ADU?
# of Properties
9,734
Owner-occupied
86%
Zoning districts
21
Avg Home Value
$347,740
Median Lot Size
0.31 acres
Avg Income
$109,899
Residential Types:
9,734 housing units
RESIDENTIAL
100%
Zoning Districts:
11,471 parcels · 21 districts
RS-3
43%(4,893)
RS-4
14%(1,627)
RS-2
14%(1,616)
RM-1
11%(1,206)
Other
19%(2,129)
ADU Rules
What can you build in Oak Creek City, WI?
Oak Creek City, 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: Not permitted
Interior / Attached ADU Size Limits
- –Maximum size of 800 sq ft or 50% of the size of the principal building, whichever is less
Owner Occupancy
- –Owner must live on-site in the principal or ADU
Parking
- –Minimum: none specified; Maximum: up to 120% of the required spaces; Exceptions: ADU parking added to principal spaces; no tandem with principal spaces; not in front-yard setback; both units share one driveway; at least one required space per unit must be enclosed; Plan Commission may adjust minimums case-by-case.
Rental Restrictions
- –Short-term rentals allowed only if the ADU is the owner's primary residence; stays must be 3-120 days. Long-term rentals: no restrictions stated.
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.
Milwaukee County