ADUs are allowed in Unincorporated LakeTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Unincorporated Lake, IL
Is your property eligible for an ADU?
# of Properties
32,292
Owner-occupied
83%
Zoning districts
65
Avg Home Value
$117,120
Median Lot Size
0.30 acres
Avg Income
$122,394
Residential Types:
32,292 housing units
Other
100%
Zoning Districts:
48,037 parcels · 65 districts
R-1
45%(21,548)
R-3
15%(7,311)
R-4
11%(5,318)
E
5%(2,339)
Other
24%(11,521)
ADU Rules
What can you build in Unincorporated Lake, IL?
Unincorporated Lake, 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 of gross floor area for an ADU
Detached ADU Size Limits
- –Maximum size of 1,000 sq ft of gross floor area for a detached accessory dwelling unit
- –Maximum size limited to 1.5 times the gross floor area of the principal structure (lot-wide accessory structures cap)
Max Units
- –1 ADU per lot (attached or detached) on lots of at least 80,000 sq ft in AG, RE, E, R-1 districts.
- –At most one of: an ADU or caretaker's residence per lot.
Owner Occupancy
- –Owner must occupy either the principal dwelling or ADU.
Parking
- –2 spaces per dwelling unit; spaces must be on the same lot; off-site parking may not be used to satisfy residential parking; when adding an ADU to an existing home, additional spaces are required only for the new unit and the total provided after the addition must equal at least 75% of the schedule minimum.
Rental Restrictions
- –Short-term rentals (<30 days) prohibited; month-to-month or longer tenancy required. Owner must occupy either the principal or ADU; both units cannot be rented simultaneously.
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.
Lake County
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