What building codes are currently listed for Illinois?
The current dataset contains 11 active adoption records for Illinois. The code identifiers represented are IBC, IEBC, IECC, IFC, IFGC, IMC, IRC, ISPSC, NFPA 70.
Illinois Building Codes & State Adoption Profile
Review 11 current statewide building code adoption records for Illinois, including model-code editions, effective dates, amendments, and official references.
Always verify statewide requirements, local amendments, and the applicable enforcement date with the authority having jurisdiction before relying on a code selection.
Current Illinois adoption records
| Adopted code | Base model code | Publisher | Effective | Adoption type | Reference |
|---|---|---|---|---|---|
| Illinois Commercial Stretch Energy Code Based on ASHRAE 90.1-2022 | 2024 International Energy Conservation Code (IECC) | ICC | Jan 1, 2025 | Custom | Not listed |
| Illinois Energy Conservation Code | 2024 International Energy Conservation Code (IECC) | ICC | Nov 30, 2025 | Custom | Not listed |
| Illinois Stretch Energy Code | 2021 International Energy Conservation Code (IECC) | ICC | Jan 1, 2025 | Custom | Not listed |
| International Residential Code | 2018 International Residential Code (IRC) | ICC | Not listed | Standard | Not listed |
| International Fire Code | 2018 International Fire Code (IFC) | ICC | Not listed | Standard | Not listed |
| International Existing Building Code | 2018 International Existing Building Code (IEBC) | ICC | Not listed | Standard | Not listed |
| International Fuel Gas Code | 2018 International Fuel Gas Code (IFGC) | ICC | Not listed | Standard | Not listed |
| International Building Code | 2018 International Building Code (IBC) | ICC | Not listed | Standard | Not listed |
| International Swimming Pool and Spa Code | 2018 International Swimming Pool and Spa Code (ISPSC) | ICC | Not listed | Standard | Not listed |
| International Mechanical Code | 2018 International Mechanical Code (IMC) | ICC | Not listed | Standard | Not listed |
| Natinal Electrical Code | 2017 NFPA 70 National Electrical Code (NFPA 70) | NFPA | Not listed | Standard | Not listed |
Illinois building code questions
Does Illinois amend its adopted model building codes?
The adoption records use these amendment classifications: Custom, Standard. Local amendments may still apply even when a statewide record is present.
How do I confirm the code for a project in Illinois?
Use the listed adoption references as a starting point, then confirm the edition, effective date, local amendments, occupancy, and project scope with the authority having jurisdiction in Illinois.
Are these Illinois records legal advice?
No. MeltPlan provides research information and source links. The enforcing agency and adopted legal text control.