Garage conversion rules in Naperville, IL — sometimes called garage-to-ADU or accessory living unit conversions — govern permits, ceiling height, egress, and parking replacement.
Naperville requires building permits for garage conversions. Converting a garage to living space must comply with building codes, zoning requirements for off-street parking replacement, and residential occupancy standards under the 2018 IRC.
Converting a garage to living space in Naperville requires a building permit and compliance with the 2018 International Residential Code as adopted by the city. The conversion must meet habitable space requirements including minimum ceiling height, ventilation, egress windows, insulation, and electrical standards. Off-street parking requirements under Title 6, Chapter 9 must be maintained. If the garage conversion eliminates required parking spaces, alternative parking arrangements may need to be provided. The converted space must comply with fire separation requirements if the garage was attached to the dwelling. Inspections are required throughout the conversion process. Contact the TED Business Group for specific requirements.
Conversion without permit: stop-work order and fines. Non-compliant habitable space: correction required before occupancy. Loss of required parking: zoning violation.
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...
Side-by-side rule comparisons with other cities in DuPage County.
See how other cities in DuPage County handle garage conversions.
See how Naperville's garage conversions rules stack up against other locations.
Quick Compare
Help us keep this page accurate. If you notice an error or outdated information, let us know.