Naperville limits total lot coverage by building and impervious surfaces under Title 6 zoning regulations. Coverage limits vary by zoning district. Accessory structures, driveways, patios, and pools all count toward lot coverage maximums.
Naperville Municipal Code Title 6 establishes maximum lot coverage percentages by zoning district. Lot coverage includes the footprint of all buildings, accessory structures, driveways, patios, walkways, pools, and other impervious surfaces. Each zoning district has its own maximum coverage percentage. Exceeding lot coverage limits requires a variance from the Zoning Board of Appeals. New construction, additions, and accessory structures must demonstrate compliance with lot coverage limits through the building permit process. Permeable pavers and certain surfaces may receive partial credit toward coverage calculations depending on the specific zoning provisions. The city's planning toolkit provides guidance on lot considerations including coverage.
Exceeding lot coverage: building permit denied or stop-work order on construction. Existing non-conforming coverage: may be subject to limitations on further construction. Variance required for any coverage increase beyond limits.
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See how Naperville's lot coverage limits rules stack up against other locations.
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