Residential Room Addition/Alteration Permit

Before beginning any new construction addition and/or alterations (including basement build-outs) to existing residential buildings, residents must obtain the necessary building permits.

As of Jan. 1, 2019, the City of Naperville has adopted the latest codebooks used for design and construction.

Please download the following application packets and review the submittal requirements. Applications without completed documentation will not be accepted.

Information and the application packet can be found here: Residential Room Addition Application Packet (PDF). Information and the application packet can be found here: Residential Room Remodel/Alteration Application Packet (PDF).

For details on the permitting process, including submittal, reviews, fees and issuance, visit the Building Permits page.