- Plumbing, heating, air-conditioning (21)
- Painting and paper hanging (14)
- Electrical work (12)
- Masonry and other stonework (12)
- Plastering, drywall, and insulation (28)
- Terrazzo, tile, marble and mosaic work (6)
- Carpentry work (9)
- Floor laying and floor work, nec (4)
- Roofing, siding, and sheetmetal work (9)
- Concrete work (14)
- Structural steel erection (3)
- Excavation work (6)
- Wrecking and demolition work (1)
- Installing building equipment (1)
- Special trade contractors, nec (45)
