ADU rules for Joliet
Accessory Dwelling Unit (ADU) Rules for Joliet, IL
Is your property eligible for an ADU?
# of Properties
61,606
Owner-occupied
61%
Zoning districts
50
Avg Home Value
$171,105
Median Lot Size
0.20 acres
Avg Income
$90,507
Residential Types:
61,606 housing units
Other
100%
Zoning Districts:
73,903 parcels · 50 districts
R-2
47%(34,420)
R-3
9%(6,733)
R-4
9%(6,469)
R-1
8%(5,663)
Other
28%(20,618)
ADU Rules
What can you build in Joliet, IL?
Joliet, IL 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: Not permitted
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 Illinois municipalities
Rules change at the town line. Check the municipality your property is actually in.
Will County