- Plumbing, heating, air-conditioning (97)
- Painting and paper hanging (35)
- Electrical work (51)
- Masonry and other stonework (11)
- Plastering, drywall, and insulation (20)
- Terrazzo, tile, marble and mosaic work (10)
- Carpentry work (17)
- Floor laying and floor work, nec (10)
- Roofing, siding, and sheetmetal work (40)
- Concrete work (34)
- Water well drilling (3)
- Structural steel erection (3)
- Glass and glazing work (1)
- Excavation work (10)
- Wrecking and demolition work (4)
- Installing building equipment (2)
- Special trade contractors, nec (89)
