The licensed radon testers listed on this site are all licensed to test residential buildings, but not all of them are licensed to test in commercial buildings.
Commercial buildings are classified as: office buildings, warehouses, retail facilities, schools, recreational facilities, assisted living facilities and buildings that combine these uses.
Licensed Commercial Testing Radon Testers
| Name | License # | Company | City | Phone | Web Site | |
| Brandon Aranda | RNI2012213 | Aranda Home Inspections | Mundelein | 224-715-5655 | Web Site | |
| Philip Borkstrom | RNI2010206 | Home Inspector Consultants, Inc. | Frankfort | 815-469-4116 | Web Site | |
| Ronald Bowers | RNI98209 | Radon Testers, Inc | Wheaton | 630-260-0700 | Web Site | |
| Mark S. Connely | RNIT2007206 | ProSpector | Rockford | 815-541-1541 | Web Site | |
| Kathy Cook | RNI2005206 | The Brickkicker | Naperville | 630-420-9900 | Web Site | |
| Stuart Cotner | RNI2012209 | Stu\'s Absolute Inspections | Lisle | 630-441-7669 | Web Site | |
| Bruce Fisher | RNI91155 | White Glove Building Inspections Inc. | Naperville | 630-428-4555 | Web Site | |
| Pamela Hanan Hall | RNI2013247 | Alpha Radon Group Inc. | Elgin | 847-508-4255 | Web Site | |
| Joe Kenron | RNI2007203 | A-1 Radon Measurements, Inc. | Morton Grove | 847-772-7051 | ||
| Derek Lantry | RNI2004213 | Carnow, Conibear & Assoc., Ltd | Chicago | 312-762-2956 | Web Site | |
| Kirsten Schmidt | RNI2006204 | Radon Detection Specialists | Westmont | 630-325-4443 | Web Site | |
| Kelly Sibert | RNI2014228 | SafeHouse Radon Testing, Inc. | Chicago | 773-517-1054 | Web Site | |
| Joe Silver | RNI2012219 | Radon & Mold Testers of Illinois | Highland Park | 773-447-0639 | Web Site |