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.
Commercial Testing Tester of the Month: Jose Rodriguez
Licensed Commercial Testing Radon Testers
| Name | License # | Company | City | Phone | Web Site | |
| Brandon Aranda | RNI2012213 | Aranda Home Inspections | Mundelein | 224-715-5655 | Web Site | |
| Ronald Bowers | RNI98209 | Radon Testers, Inc | Wheaton | 630-260-0700 | Web Site | |
| Kathy Cook | RNI2005206 | The Brickkicker | Naperville | 630-420-9900 | Web Site | |
| Bruce Fisher | RNI91155 | White Glove Building Inspections Inc. | Naperville | 630-428-4555 | Web Site | |
| Michael Larmon | RNI2013213 | Action Ozone Inc | Bourbonnais | 847-815-4541 | Web Site | |
| Jim Luka | RNI2007206 | JBL Radon Gas Detection | Elmhurst | 630-212-8492 | Web Site | |
| Amy S. Murphy | RNI2009212 | DuPage Radon Testing | Warrenville | 630-225-7997 | Web Site | |
| John Reim | RNI2013223 | Bee Sure Home Inspection Svcs. | Grayslake | 773-425-8275 | Web Site | |
| Jose Rodriguez | RNI2012207 | Radon Professional Services | Berwyn | 708-935-3206 | Web Site | |
| Kirsten Schmidt | RNI2006204 | Radon Detection Specialists | Westmont | 630-325-4443 | Web Site | |
| Joe Silver | RNI2012219 | Radon & Mold Testers of Illinois | Highland Park | 773-447-0639 | Web Site |