- Plumbing, heating, air-conditioning (15)
- Painting and paper hanging (2)
- Electrical work (13)
- Masonry and other stonework (4)
- Plastering, drywall, and insulation (3)
- Carpentry work (4)
- Floor laying and floor work, nec (1)
- Roofing, siding, and sheetmetal work (8)
- Concrete work (3)
- Water well drilling (1)
- Structural steel erection (3)
- Glass and glazing work (2)
- Excavation work (10)
- Installing building equipment (1)
- Special trade contractors, nec (31)
