| Code Type | Code Model | Amendment Contact |
| Building/Dwelling Code | IBC 2006 | No amendments |
| Structural Code | IBC 2006 | No amendments |
| Plumbing Code | UPC 2006 | No amendments |
| Mechanical Code | IMC 2006 | No amendments |
| Electrical Code | NEC 2005 | State-written amendments, Electrical Safety Bureau, (406) 440-3642 |
| Accessibility Code | IBC 2006 | |
| Energy Code | IECC 2003 & ICC/ANSI A117.1 | |
| Elevator Code | ASME A17.1-2004; A17.1a-2005; ASME A17.1S-2005 |
| Jurisdictional Area | Contact |
| Structural | Kim Palmieri Building Division Official Phone: (406) 657-8273 |
| Plumbing | Kim Palmieri Building Division Official Phone: (406) 657-8273 |
| Mechanical | Kim Palmieri Building Division Official Phone: (406) 657-8273 |
| Electrical | Kim Palmieri Building Division Official Phone: (406) 657-8273 |
| Fire Marshal | Marv Jochems Fire Chief Phone: (406) 657-8420 |
| Civil | Vern Heisler City Engineer Phone: (406) 657-8236 |
| Zoning | Nicole Cromwell Zoning Coordinator Phone: (406) 247-8662 |
| Planning | Candy Beaudry Planning Division Manager Phone: (406) 657-8249 |
| City Attorney | City Attorney Office Phone: (406) 657-8205 |
| Public Works | David Mumford Director of Public Works Phone: (406) 657-8232 |
| Parks/Recreation | Gene Blackwell Park Supt. & Forester Phone: (406) 657-8372 |
| Aviation | Tom Binford Asst. Director of Aviation & Transit Phone: (406) 657-8494 |
