ADUs are allowed in EdwardsvilleTypes:Internal
Types:Internal
Accessory Dwelling Unit (ADU) Rules for Edwardsville, IL
Is your property eligible for an ADU?
# of Properties
9,147
Owner-occupied
71%
Zoning districts
21
Avg Home Value
$95,465
Median Lot Size
0.26 acres
Avg Income
$110,314
Residential Types:
9,147 housing units
Single Family
1%
Apts (4+ units)
9%
Condos
1%
Other
89%
Zoning Districts:
10,219 parcels · 21 districts
R-1
81%(8,315)
R-2
8%(856)
B-2
4%(442)
M-1
2%(204)
Other
4%(402)
ADU Rules
What can you build in Edwardsville, IL?
Edwardsville, 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 permitted
Max Units
- –R-1: 0 per lot; R-2: 0 per lot; Small Lot Overlay: 0 per lot.
- –Attached/Internal ADUs/JADUs: none specified.
Owner Occupancy
- –No owner-occupancy requirement.
Parking
- –ADUs not permitted; no ADU-specific parking; if a separate dwelling unit is approved, general dwelling parking standards apply
Rental Restrictions
- –Detached ADU cannot be rented; use of any accessory structure as a dwelling is strictly prohibited.
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.
Madison County