

ADUs are allowed in Buffalo GroveTypes:Internal
Types:Internal
Accessory Dwelling Unit (ADU) Rules for Buffalo Grove, IL
Is your property eligible for an ADU?
# of Properties
15,695
Owner-occupied
83%
Zoning districts
26
Avg Home Value
$108,496
Median Lot Size
0.24 acres
Avg Income
$142,268
Residential Types:
15,695 housing units
Other
100%
Zoning Districts:
16,694 parcels · 26 districts
R-9
32%(5,271)
R-5A
14%(2,269)
R-6A
9%(1,490)
R-4
8%(1,393)
Other
38%(6,271)
ADU Rules
What can you build in Buffalo Grove, IL?
Buffalo Grove, IL follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.
Eligibility
- –Internal / Attached ADU: Conditional Use Permit
- –Detached ADU: Not addressed in the local bylaw
Owner Occupancy
- –No owner-occupancy requirement for ADUs.
Rental Restrictions
- –Detached guest quarters shall not be rented or used as a separate dwelling.
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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Is your property eligible for an ADU?
ADU rules in other Illinois municipalities
Rules change at the town line. Check the municipality your property is actually in.
Cook County