- Plumbing, heating, air-conditioning (39)
- Painting and paper hanging (15)
- Electrical work (20)
- Masonry and other stonework (7)
- Plastering, drywall, and insulation (7)
- Terrazzo, tile, marble and mosaic work (13)
- Carpentry work (8)
- Floor laying and floor work, nec (5)
- Roofing, siding, and sheetmetal work (7)
- Concrete work (12)
- Structural steel erection (2)
- Glass and glazing work (1)
- Excavation work (1)
- Wrecking and demolition work (3)
- Installing building equipment (1)
- Special trade contractors, nec (29)
