DuPage County, IL Parking Rules: Driveway Rules (2026)

1(J)(4), the surfacing standard within the county's off-street parking article, requires every off-street parking space, drive and aisle accessory to a building or use in unincorporated DuPage County to be improved with an all-weather material. For single-family dwellings in parking categories 1-1 and 1-2 under Section 37-1203, the access driveway must be paved from the street traveled way to the property line of the residential lot. The ordinance carves out one exception: a category 1-1 residential lot that accesses an unimproved road does not need to pave at all, but the driveway surface still has to meet a minimum of 8 inches of compacted aggregate.

For every other residential driveway accessing an improved street, the surfacing has to be either 6 inches of compacted aggregate base course topped with 2 inches of asphaltic wearing surface, or 4 inches of aggregate base course with 4 inches of concrete pavement. Where the Director of the Department of Economic Development and Planning determines a driveway will carry heavy loads, the standard steps up to 8 inches of reinforced concrete pavement or 10 inches of asphaltic concrete base with a 2-inch asphaltic wearing surface.

Multi-family driveways under parking categories 1-3 through 1-6 are held to a separate, heavier surfacing menu of 6-inch unreinforced concrete, 6-inch asphaltic base with a 2-inch wearing surface, or 10-inch compacted aggregate with a 2-inch asphaltic wearing surface. New off-street parking facilities and expansions for nonresidential uses additionally require a permit from the Department of Economic Development and Planning before construction begins.