- Plumbing, heating, air-conditioning (252)
- Painting and paper hanging (240)
- Electrical work (185)
- Masonry and other stonework (48)
- Plastering, drywall, and insulation (130)
- Terrazzo, tile, marble and mosaic work (89)
- Carpentry work (105)
- Floor laying and floor work, nec (74)
- Roofing, siding, and sheetmetal work (126)
- Concrete work (94)
- Water well drilling (7)
- Structural steel erection (10)
- Glass and glazing work (9)
- Excavation work (64)
- Wrecking and demolition work (16)
- Installing building equipment (5)
- Special trade contractors, nec (207)
