ADUs are allowed in EvanstonTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Evanston, IL
Is your property eligible for an ADU?
# of Properties
22,569
Owner-occupied
55%
Zoning districts
33
Avg Home Value
$61,478
Median Lot Size
0.19 acres
Avg Income
$119,026
Residential Types:
22,569 housing units
Apts (4+ units)
2%
Other
98%
Zoning Districts:
24,700 parcels · 33 districts
R1
25%(6,105)
R5
23%(5,765)
R3
12%(2,935)
R2
11%(2,807)
Other
29%(7,088)
ADU Rules
What can you build in Evanston, IL?
Evanston, 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 1,000 sq ft when an internal or attached ADU is created by new construction or an addition
- –ADU must be smaller than the primary dwelling unit; for single-family homes, up to the habitable area of the primary dwelling
Detached ADU Size Limits
- –Maximum detached ADU size of 1,000 sq ft of floor area.
Max Units
- –1 ADU per zoning lot
Owner Occupancy
- –There is no requirement that the property owner reside on the property.
Parking
- –0 spaces per ADU; no off-street parking required; existing required parking for the primary residence must be maintained or replaced if displaced by the ADU
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