Franklin County
Local NEHA certified Radon Measurement Specialists
Certified Radon Inspectors
NEHA Certified Radon Measurement Specialists
| Company | Inspector | Phone | City | County |
| House Doctor Home Inspection | David Sumers | (636) 288-8595 | St Peters | Saint Charles |
| Assisting Homebuyers Inspection Services | James Zaloudek | (314) 406-2848 | St. Charles | Saint Charles |
| ACE Home Inspection | Scott R. Knight | (636) 978-9111 | St. Peters | Saint Charles |
| Kingdom Inspection Network Group - St Louis | Mark D. Nahrgang | (636) 278-1849 | St. Peters | Saint Charles |
| Grafeman Home Inspection, Inc dba HouseMaster | William Grafeman | (636) 233-5882 | Wentzville | Saint Charles |
| Spruce Environmental Technologies | Trudy Y. Smith | (314) 471-2090 | Lake Sherwood | Warren |