

ADU rules for Elgin
Accessory Dwelling Unit (ADU) Rules for Elgin, IL
Is your property eligible for an ADU?
# of Properties
32,199
Owner-occupied
84%
Zoning districts
42
Avg Home Value
$88,481
Median Lot Size
0.20 acres
Avg Income
$105,385
Residential Types:
32,199 housing units
Single Family
1%
Apts (4+ units)
73%
Other
26%
Zoning Districts:
36,607 parcels · 42 districts
RC1
18%(6,519)
RC2
18%(6,518)
PSFR2
18%(6,509)
RC3
14%(5,061)
Other
33%(12,000)
ADU Rules
What can you build in Elgin, IL?
Elgin, IL follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.
Eligibility
- –Internal / Attached ADU: Not addressed in the local bylaw
- –Detached ADU: Not addressed in the local bylaw
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.
Kane County