Home inspectors · Illinois
Illinois home inspector license: requirements, renewal and scope
Illinois licenses home inspectors through IDFPR. 1,688 hold an active license today, and every license expires on November 30 of an even year.
1,688active home inspector licenses
162licensed inspection companies
214also hold an IEMA radon testing license
Getting and keeping the license
What an Illinois inspection covers
- What a home inspection is
- In Illinois a home inspection examines at least two of: heating and cooling, plumbing, electrical, structure, foundation, roof, masonry, or other components set by rule, in connection with a sale or lease.Illinois General Assembly (Illinois Compiled Statutes), read October 15, 2026
- Written contract first
- Before the inspection, the inspector and client sign a written contract listing the systems to be inspected and any limits or exclusions.Illinois General Assembly, Joint Committee on Administrative Rules (Illinois Administrative Code), read October 15, 2026
- Environmental services can be excluded
- The contract may state the inspector is not required to perform engineering or environmental services. The standards of practice do not list radon testing among the inspected systems.Illinois General Assembly, Joint Committee on Administrative Rules (Illinois Administrative Code), read October 15, 2026
- Report within 2 business days
- The written inspection report goes to the client within 2 business days and names every licensed inspector who took part.Illinois General Assembly, Joint Committee on Administrative Rules (Illinois Administrative Code), read October 15, 2026
- Systems in the standards
- The standards set out what to inspect for structure and foundation, exterior, roof, plumbing, electrical, heating, cooling, interior, insulation and ventilation, and fireplaces, when the contract includes them.Illinois General Assembly, Joint Committee on Administrative Rules (Illinois Administrative Code), read October 15, 2026
Radon is a separate license
- Home inspectors need the radon license
- A home inspector who runs radon tests for clients needs an IEMA-OHS measurement license. The only retail exemption excludes sellers that also serve the client through home inspection or real estate representation.Illinois General Assembly (Illinois Compiled Statutes), read October 15, 2026
- Results due within 45 days
- The tester must give the client the radon test results within 45 days after testing.Illinois General Assembly (Illinois Compiled Statutes), read October 15, 2026
Mitigation checklist
- Mitigation checklist for inspectors
- IEMA-OHS publishes a mitigation system checklist that licensed home inspectors can use to check an installation against the state rule. It does not replace an IEMA compliance inspection.Illinois Emergency Management Agency and Office of Homeland Security (IEMA-OHS), read October 15, 2026
Where Illinois's licensed inspectors are based
Active home inspector licenses by county of the license address, top 20, from the state's open license file read October 15, 2026. Individual inspectors are not listed.
| County | Active licenses |
|---|---|
| Cook | 482 |
| Not printed | 352 |
| Will | 104 |
| Lake | 100 |
| Dupage | 95 |
| Kane | 63 |
| Mchenry | 53 |
| Winnebago | 28 |
| Kendall | 26 |
| Tazewell | 17 |
| Dekalb | 16 |
| Mclean | 16 |
| Saint Clair | 16 |
| Sangamon | 15 |
| Peoria | 15 |
| Madison | 15 |
| Kankakee | 11 |
| Champaign | 10 |
| Williamson | 9 |
| Ogle | 9 |
Sources
- Illinois General Assembly (Illinois Compiled Statutes), read October 15, 2026.
- Illinois General Assembly, Joint Committee on Administrative Rules (Illinois Administrative Code), read October 15, 2026.
- Illinois General Assembly (Illinois Compiled Statutes), read October 15, 2026.
- Illinois Emergency Management Agency and Office of Homeland Security (IEMA-OHS), read October 15, 2026.
- Illinois license file on the state open data portal, read October 15, 2026.
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