Official Government Website
Departments: Community Development

Adopted Building Codes

This page is a listing of the codes that are enforced by DeKalb County, effective July 1, 2019.

RESIDENTIAL

2015 International Residential Code*

2015 International Mechanical Code

2015 International Fuel Gas Code

2014 National Electrical Code

2014 Illinois State Plumbing Code (by IL State Plumbing Inspector)

2018 IECC – Illinois State Energy Conservation Code

DeKalb County Code
https://library.municode.com/il/dekalb_county/codes/code_of_ordinances

*NOTE: Amended Adoption Ordinance

COMMERCIAL OR INDUSTRIAL

2015 International Building Code*

2015 International Fire Code

2014 National Electrical Code

2015 International Mechanical Code

2015 International Fuel Gas Code

2015 International Existing Building Code

2014 Illinois State Plumbing Code (by IL State Plumbing Inspector)

2018 IECC – Illinois State Energy Conservation Code

2018 Illinois Accessibility Code

DeKalb County Code
https://library.municode.com/il/dekalb_county/codes/code_of_ordinances

*NOTE: Amended Adoption Ordinance

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