

ADU rules for Carpentersville
Accessory Dwelling Unit (ADU) Rules for Carpentersville, IL
Is your property eligible for an ADU?
# of Properties
8,556
Owner-occupied
83%
Zoning districts
21
Avg Home Value
$94,591
Median Lot Size
0.16 acres
Avg Income
$91,199
Residential Types:
8,556 housing units
Apts (4+ units)
97%
Other
3%
Zoning Districts:
9,635 parcels · 21 districts
R-2A
49%(4,761)
R-1
12%(1,178)
R-2
10%(933)
R-3
8%(757)
Other
21%(2,006)
ADU Rules
What can you build in Carpentersville, IL?
Carpentersville, IL 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
- –Detached ADU: 0 per lot; Attached/Internal ADU/JADU: none specified
Owner Occupancy
- –No owner-occupancy requirement.
Rental Restrictions
- –Detached ADUs prohibited; accessory buildings may not be used for dwelling purposes, preventing renting.
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.
Kane County