- Plumbing, heating, air-conditioning (19)
- Painting and paper hanging (12)
- Electrical work (16)
- Masonry and other stonework (4)
- Plastering, drywall, and insulation (5)
- Terrazzo, tile, marble and mosaic work (3)
- Carpentry work (24)
- Floor laying and floor work, nec (8)
- Roofing, siding, and sheetmetal work (13)
- Concrete work (10)
- Structural steel erection (2)
- Glass and glazing work (3)
- Excavation work (9)
- Installing building equipment (1)
- Special trade contractors, nec (19)
