Illinois — electrical code & licensing
Partially verified
The code
| Edition in force | No single statewide NEC edition. State default (commercial buildings in non-building-code jurisdictions, and state-funded construction): the current edition or most recent preceding edition of the NEC, per 20 ILCS 3105/10.09-1; jurisdictions that have adopted a building code govern by their locally adopted edition and amendments |
| Edition structure | Statute points at the current edition (floats) |
| Effective date | no single statewide date |
| Adopted by | Illinois Capital Development Board (state default/baseline framework); municipalities and counties for their own adopted codes |
| Adoption source | https://cdb.illinois.gov/business/codes/buildingcodesregulations.html |
| State amendments | Amendments are a local matter — no state-level set |
Licensing
| Authority | None identified at state level |
| Licensing source | https://cdb.illinois.gov/business/codes/illinois-codes-faq.html |
Permits & inspections
The State does not perform plan reviews, issue building permits, perform inspections, or issue occupancy permits for privately funded construction (CDB FAQ) - those are local-government functions. Exception: for commercial buildings in non-building-code jurisdictions, 20 ILCS 3105/10.09-1 requires a qualified inspector's certification of compliance (including with the current/most recent preceding NEC) before occupancy.
Things to watch for
- This record is partially verified. Still open: The licensing model is blank: no official Illinois page states in so many words that there is no state electrician license. The structure is verified; the sentence doesn't exist on an official page opened to date.
How this record was verified
| Adoption | Verified |
| Amendments | Not applicable |
| Licensing | Not yet verified |
| Permits & inspections | Verified |
Which edition applies where
| jurisdictions with their own building codes | varies
· selected by local adoption
Locally adopted editions govern. |
| state-scope/commercial buildings in jurisdictions without their own building code | varies
The current or most recent preceding NEC under 20 ILCS 3105/10.09-1 (dynamic reference). |
Working notes
Adoption structure verified on CDB pages and the statute text (https://www.ilga.gov/documents/legislation/ilcs/documents/002031050K10.09-1.htm). No NEC-edition effective date exists to record; Public Act 103-510's statewide building-code baseline applies from 2025-01-01 but names no NEC edition. There are no state NEC amendments - amendments are local and reported to CDB under 20 ILCS 3105/10.18. Licensing model left BLANK/unverified: CDB sources verify the local-AHJ structure, but no official Illinois state page stating in so many words that there is no state electrician license was opened this pass; secondary sources consistently describe licensing as municipal but are not cited.
Reference only. Compiled from the cited official sources as of the date shown; adoptions and rules change. Confirm with the authority having jurisdiction before designing or permitting work.