- Plumbing, heating, air-conditioning (13)
- Painting and paper hanging (7)
- Electrical work (12)
- Masonry and other stonework (1)
- Plastering, drywall, and insulation (6)
- Carpentry work (4)
- Floor laying and floor work, nec (3)
- Roofing, siding, and sheetmetal work (7)
- Concrete work (7)
- Water well drilling (3)
- Structural steel erection (1)
- Glass and glazing work (1)
- Excavation work (1)
- Wrecking and demolition work (3)
- Special trade contractors, nec (21)
