Building Codes  

Rolled PlatsThe City of Naperville has adopted the 2012 edition of the International Codes published by the International Code Council  for residential, commercial and multi-family construction. The City has also adopted amendments to 2012 International Codes, which can be found in Title 5 of the Municipal Code.

  • International Building Code (2012)
  • International Residential Code (2012)
  • International Fire Code (2012)
  • International Plumbing Code/Private Sewage Disposal Code (2012)
  • International Mechanical Code (2012)
  • International Fuel Gas Code (2012)
  • International Code Council Electrical Administrative Provisions (2006) and National Electric Code (2011)
  • International Swimming Pool and Spa Code (2012)
  • International Existing Building Code
  • Illinois Energy Conservation Code (2015 IECC as amended by the State of Illinois)
  • Illinois State Plumbing Code (current)
  • Illinois Accessibility Code (current)

The above codes were adopted by City Council in December of 2012. All permits submitted on or after March 1, 2013 must comply with the new codes.

Updates to the Illinois Energy Conservation Code

Permits applied for on or after January 1, 2016, are subject to the 2015 IECC and ASHRAE 90.1-2013 with Illinois amendments. Illinois amendments may be found by reviewing the Capital Development Board filing on page 12,425 of the September 11, 2015, Illinois Register (v.39, i.37) (PDF).

Building Design Criteria

 Ground Snow Load

 Wind Speed d (mph)

 Seismic Design
Category f

 Weathering a

 Frost Line Depth b

 Termite c


 90/3 second wind gust






 Winter Design
Temp e

 Ice Barrier Underlayment
Required h

Hazards g

 Air Freezing
Index i

 Mean Annual
Temp j

 -1o F


 Refer to Local Ordinances


 48.7o F


New Commercial Building Concept Approval

Additions to commercial structures or new structures please click here for more information. 

Occupying an Existing Business Space?

Attendance at a Tenant Build-Out Meeting is required. TBO meetings are held every Tuesday at 8:30 a.m. in meeting rooms B & C. Appointments are not necessary. Please call (630) 420-6100, option 2, with any questions.