ADUs are allowed in Chicago HeightsTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Chicago Heights, IL
Is your property eligible for an ADU?
# of Properties
9,121
Owner-occupied
70%
Zoning districts
29
Avg Home Value
$11,093
Median Lot Size
0.15 acres
Avg Income
$63,949
Residential Types:
9,121 housing units
Apts (4+ units)
1%
Other
99%
Zoning Districts:
14,075 parcels · 29 districts
R-1
33%(4,625)
R-2
32%(4,529)
B-2
9%(1,202)
R-4
8%(1,089)
Other
19%(2,630)
ADU Rules
What can you build in Chicago Heights, IL?
Chicago Heights, IL follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.
Eligibility
- –Internal / Attached ADU: By Right
- –Detached ADU: By Right
Interior / Attached ADU Size Limits
- –Maximum size of 50% of the principal dwelling’s floor area
Detached ADU Size Limits
- –Maximum ADU size is 50% of the floor area of the principal dwelling unit.
Owner Occupancy
- –Owner must reside in the principal dwelling on-site.
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