- Plumbing, heating, air-conditioning (2)
- Electrical work (1)
- Masonry and other stonework (1)
- Plastering, drywall, and insulation (1)
- Roofing, siding, and sheetmetal work (2)
- Concrete work (2)
- Glass and glazing work (1)
- Excavation work (3)
- Special trade contractors, nec (2)
