| General Contractor | Master Plumber | Master Electrician |
| Registered Architects | Professional Engineers | Special Inspection Agency |
| Hoist Machine (Crane) Operator | Master Rigger | Tower Crane Rigger |
| Construction Superintendent | Site Safety Manager | Concrete Safety Manager |
| Fire Suppression Contractor | Welder | Oil Burner Installer |
| Concrete Testing Lab | Energy Auditor/Retro-Commission Agent | Sign Hanger |
| Elevator Agency/Inspector | Stationary/Portable Engineer | Filing Representative (Expeditor) |

