ADU rules in Naperville, IL β also called accessory dwelling unit regulations or granny flat ordinances β cover setbacks, owner-occupancy, parking, and permit requirements.
Naperville regulates accessory structures under Title 6, Section 6-2-10 (Zoning). Accessory dwelling units are subject to zoning district restrictions including lot coverage, height, and setback requirements. Building permits are required for all accessory structures.
Naperville Municipal Code Title 6, Section 6-2-10 governs accessory buildings, structures, and uses of land. ADUs and accessory structures must comply with lot coverage maximums, height limits, and setback requirements for the applicable zoning district. The R2 district requires a 25-foot rear yard setback, with allowances for patios, decks, and porches to extend up to 10 feet into the required rear yard setback. All accessory structures require building permits. The structure must remain subordinate to the principal dwelling. Illinois does not have a statewide ADU mandate like California, so Naperville retains local zoning authority over accessory dwelling units. Conditional use permits may be required depending on the zoning district and proposed use.
Building without a permit: stop-work order and fines. Exceeding lot coverage or violating setbacks: zoning violation requiring correction. Unauthorized dwelling use in accessory structure: zoning enforcement.
Naperville, IL
Naperville does not have a local aircraft noise ordinance. Aircraft noise is regulated exclusively at the federal level by the FAA. Naperville is approximate...
Naperville, IL
Naperville requires an $80 fence permit for all fences over 3 feet in height. Applications require a Plat of Survey showing fence placement. Call JULIE at 1-...
Naperville, IL
Naperville limits residential fences to 6 feet in height under Title 6, Section 6-2-15. Fences along major arterial roadways may be up to 9 feet. Front yard ...
Naperville, IL
Naperville requires all dogs to be on a leash no longer than 6 feet when off the owner's property under Title 10, Chapter 4. Dogs running at large on any str...
Naperville, IL
Naperville allows backyard chickens with a permit for any coop or enclosure. Livestock keeping is regulated by zoning under Title 6. A permit is required for...
Naperville, IL
Naperville allows beekeeping in most zoning districts but restricts it in R2 through R5 residential zones. All bee colonies must be registered with the State...
See how Naperville's adu rules rules stack up against other locations.
Help us keep this page accurate. If you notice an error or outdated information, let us know.