

ADU rules for Unincorporated St. Joseph
Accessory Dwelling Unit (ADU) Rules for Unincorporated St. Joseph, IN
Is your property eligible for an ADU?
# of Properties
10,245
Owner-occupied
57%
Zoning districts
21
Avg Home Value
$26,922
Median Lot Size
4.55 acres
Avg Income
$95,771
Residential Types:
10,245 housing units
Single Family
26%
2-3 Family
2%
Apts (4+ units)
44%
Other
28%
Zoning Districts:
49,480 parcels · 21 districts
R
78%(38,527)
A
16%(7,879)
C
2%(965)
I
1%(584)
Other
3%(1,525)
ADU Rules
What can you build in Unincorporated St. Joseph, IN?
Unincorporated St. Joseph, IN 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
Owner Occupancy
- –No owner-occupancy required for ADUs.
Parking
- –1 space per dwelling unit (ADUs treated as dwelling units); U District exempt; credits allow adjacent on-street spaces; 10% reduction for transit within 1,000 ft; bicycle-space credits: 1 space per 2 additional bike spaces, up to 10%.
Rental Restrictions
- –Detached ADU rentals prohibited.
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 Indiana municipalities
Rules change at the town line. Check the municipality your property is actually in.
St. Joseph County