- Plumbing, heating, air-conditioning (2)
- Electrical work (1)
- Plastering, drywall, and insulation (2)
- Roofing, siding, and sheetmetal work (1)
- Concrete work (1)
- Water well drilling (1)
- Excavation work (1)
- Wrecking and demolition work (1)
- Special trade contractors, nec (1)
