

ADU rules for Beloit City
Accessory Dwelling Unit (ADU) Rules for Beloit City, WI
Is your property eligible for an ADU?
# of Properties
12,194
Owner-occupied
67%
Zoning districts
16
Avg Home Value
$167,936
Median Lot Size
0.20 acres
Avg Income
$67,581
Residential Types:
12,245 housing units
Single Family
99%
Apts (4+ units)
1%
Zoning Districts:
13,472 parcels · 16 districts
R-1B
57%(7,646)
R-1A
30%(3,996)
R-3
2%(320)
C-3
2%(251)
Other
9%(1,259)
ADU Rules
What can you build in Beloit City, WI?
Beloit 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 addressed in the local bylaw
- –Detached ADU: Not addressed in the local bylaw
Max Units
- –TND: secondary dwelling units capped at ≤10% of total single-family attached and detached units.
- –May be within the principal building or an accessory building; size ≤800 sq ft.
Parking
- –ADU parking: none specified; CBD exemptions apply (no off-street parking required); 4-space cap on accessory outdoor parking for single-family; ADUs not listed in Table 8-103.
Rental Restrictions
- –Short-term/vacation rentals prohibited; tenancy must be month-to-month or longer (shorter stays are transient lodging). Detached ADU guest house may not be rented.
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.
Check my propertyHow can we help you?
Get matched with trusted local builders
Understand what's allowed on your property
Learn the key rules and size limits for ADUs
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.
Rock County