ADU rules for Rockford
Accessory Dwelling Unit (ADU) Rules for Rockford, IL
Is your property eligible for an ADU?
# of Properties
50,819
Owner-occupied
84%
Zoning districts
19
Avg Home Value
$164,119
Median Lot Size
0.20 acres
Avg Income
$63,280
Residential Types:
50,819 housing units
Single Family
76%
2-3 Family
7%
Apts (4+ units)
4%
Condos
5%
Other
8%
Zoning Districts:
59,904 parcels · 19 districts
R1
70%(41,911)
R2
11%(6,841)
R3
5%(2,781)
C2
3%(1,924)
Other
11%(6,447)
ADU Rules
What can you build in Rockford, IL?
Rockford, 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
Parking
- –No ADU-specific parking ratio; parking for accessory uses not required unless stated; when adding ADUs, off-street parking is required only to serve added units; existing deficits need not be eliminated.
Rental Restrictions
- –Detached ADU cannot be rented; not permitted for habitation. Internal/attached ADU not permitted for habitation. Rentals must be monthly or longer; short-term (<30 days) not allowed.
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.
Winnebago County