- Plumbing, heating, air-conditioning (16)
- Painting and paper hanging (9)
- Electrical work (12)
- Masonry and other stonework (3)
- Plastering, drywall, and insulation (9)
- Carpentry work (12)
- Floor laying and floor work, nec (6)
- Roofing, siding, and sheetmetal work (11)
- Concrete work (9)
- Water well drilling (3)
- Structural steel erection (1)
- Excavation work (9)
- Wrecking and demolition work (2)
- Special trade contractors, nec (10)
