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Building Code

The following codes apply to the unincorporated areas of DuPage County: Current Building Code (residential construction), 2021 International Code Council (International Building Code, International Fire Code, International Mechanical Code, International Fuel Gas Code, International Property Maintenance Code),2020 National Electric Code, current Illinois Energy Efficient Building Code, current Illinois State Plumbing Code and current Illinois Accessibility Code.

The Building Code can be found in our Municode library - Chapter 8 

Building Code - Amended, November 14, 2023 - Effective January 1, 2024

"Illinois Energy Conservation Code" for Commercial and Residential Buildings

Public Act 099-0122 regarding the removal of mercury thermostats - (415 ILCS 98/51 new) - Sec.51.Removal of mercury thermostats from commercial buildings prior to demolition. No person shall demolish a commercial building unless (i) all mercury thermostats have been removed from the building and (ii) the person who removed the thermostats from the building has arranged for them to be delivered to a collection site established under this Act.

Du Page County Basic Above Ground Pool Electrical Requirements

  • Based on National Electrical Code 2020 Edition Article 680

Du Page County Outdoor Spa/Hot Tub Electrical Requirements

  • National Electrical Code Article 680, Section 680.42 governs outdoor spa/hot tub installations

A permit is required when installing a pool, spa or hot tub if:

  • It is twenty four inches (24") deep or greater
  • It has 250 sq ft of surface area or greater
  • It is equipped with a water recirculating system
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