- Plumbing, heating, air-conditioning (12)
- Painting and paper hanging (8)
- Electrical work (16)
- Masonry and other stonework (5)
- Plastering, drywall, and insulation (3)
- Carpentry work (6)
- Floor laying and floor work, nec (1)
- Roofing, siding, and sheetmetal work (5)
- Concrete work (5)
- Water well drilling (1)
- Structural steel erection (1)
- Glass and glazing work (1)
- Excavation work (4)
- Wrecking and demolition work (1)
- Special trade contractors, nec (13)