| Company | Location | Certifications | License # |
|---|---|---|---|
| Hunter Poppe | Shell Rock, IA | Inspector | 13027 |
| Jacob Courtney | Allison, IA | Inspector | 13083 |
| Kevin Toben | Parkersburg, IA | Inspector | 9233 |
| Noah Oldenburger | Parkersburg, IA | Inspector | 13414 |
4 companies in the Iowa DNR Certified Onsite (Time-of-Transfer) Inspector List are based in Butler County as of 2026-07-23. Companies based elsewhere in Iowa also commonly serve the county.
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