- Plumbing, heating, air-conditioning (44)
- Painting and paper hanging (13)
- Electrical work (27)
- Masonry and other stonework (8)
- Plastering, drywall, and insulation (5)
- Terrazzo, tile, marble and mosaic work (1)
- Carpentry work (20)
- Floor laying and floor work, nec (2)
- Roofing, siding, and sheetmetal work (8)
- Concrete work (5)
- Water well drilling (1)
- Structural steel erection (2)
- Glass and glazing work (2)
- Excavation work (10)
- Installing building equipment (1)
- Special trade contractors, nec (20)
