Driveway Rules: Downers Grove vs Naperville
How do driveway rules rules compare between Downers Grove, IL and Naperville, IL?
Downers Grove and Naperville have similar restriction levels.
Downers Grove, IL
DuPage County
Any new, modified, or relocated driveway connecting to a DuPage County highway requires a Highway Permit from the DuPage County Division of Transportation under the county's Highway Rights-of-Way Permit and Fee Ordinance (effective 03/01/2023). Permits cover access, construction within the right-of-way, sight distance, and surface restoration. Driveways onto municipal streets are regulated by the host municipality, and driveways onto state highways require an IDOT permit instead.
View full Downers Grove rules →Naperville, IL
DuPage County
Naperville requires permits for new driveway construction or modifications. Driveways must meet width, material, and grading standards. Vehicles may not be parked on unpaved surfaces in residential front yards. Sump pump discharge to driveways is prohibited.
View full Naperville rules →Key Facts Comparison
| Fact | Downers Grove | Naperville |
|---|---|---|
| - | - | |
| Permit Required | - | Yes, for construction |
| Surface | - | Improved/paved required |
| Sump Pumps | - | No discharge to streets |
| Grass Parking | - | Prohibited in front yard |
Highlighted rows indicate differences between cities.
Downers Grove FAQ
Do I need a permit to add a driveway in unincorporated DuPage County?
If the driveway connects to a DuPage County highway, yes — you must obtain a Highway Permit from the DuPage County Division of Transportation under the 2023 Highway Rights-of-Way Permit and Fee Ordinance before starting work. The Highway Permits Manager can be reached at hwypermits@dupagecounty.gov or 630-407-6900.
How do I know if my street is a DuPage County highway?
DuPage County maintains roughly 250 miles of arterial and collector roadway; major county highways include 75th Street, Hobson Road, Plainfield Road, Roosevelt Road (in part), and many "named" corridors. If you are unsure, call DuPage DOT at 630-407-6900 with your address and they will confirm jurisdiction (county, state, or municipal) before you apply for a permit.
What standards does a new driveway have to meet?
Per the Highway Rights-of-Way Permit and Fee Ordinance, all work in the right-of-way must conform to IDOT "Standard Specifications for Road and Bridge Construction" plus the DuPage DOT "General Notes and Specifications," including drainage, grade, sight distance, and pavement restoration. The Highway Permits Manager will review your plans and may require revisions before issuing the permit.
What hours can a contractor close a lane while pouring my driveway apron?
Daytime lane closures on DuPage County highways are permitted only between 9:00 AM and 4:00 PM, and never during snow operations. The contractor must also notify DuPage DOT at least 48 hours before starting work in the right-of-way.
Naperville FAQ
Do I need a permit to widen my driveway in Naperville?
Yes. Driveway construction, widening, and material changes all require building permits from the city. The permit ensures compliance with drainage and material standards.
Can I park on the grass in my front yard in Naperville?
No. Vehicles must be parked on improved surfaces such as paved driveways. Parking on grass or unpaved areas in front yards is a code enforcement violation.
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