ADU rules for Blue Island
Accessory Dwelling Unit (ADU) Rules for Blue Island, IL
Is your property eligible for an ADU?
# of Properties
6,262
Owner-occupied
59%
Zoning districts
10
Avg Home Value
$16,152
Median Lot Size
0.12 acres
Avg Income
$67,427
Residential Types:
6,262 housing units
Apts (4+ units)
2%
Other
98%
Zoning Districts:
7,914 parcels · 10 districts
R1
76%(5,984)
UTOD
6%(487)
C2
5%(360)
SU
4%(348)
Other
9%(735)
ADU Rules
What can you build in Blue Island, IL?
Blue Island, 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
Parking
- –No numeric ADU parking requirement; ADUs not listed in the residential table; off-street parking must meet 'adequate off-street parking' for accessory uses, with no ADU-specific standard or waiver.
Rental Restrictions
- –Detached ADU rental is effectively prohibited; it may only be used as a private guest house for occupants' guests (not for permanent occupancy, long- or short-term).
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.
Cook County