- Plumbing, heating, air-conditioning (36)
- Painting and paper hanging (10)
- Electrical work (28)
- Masonry and other stonework (6)
- Plastering, drywall, and insulation (5)
- Terrazzo, tile, marble and mosaic work (1)
- Carpentry work (13)
- Floor laying and floor work, nec (2)
- Roofing, siding, and sheetmetal work (7)
- Concrete work (10)
- Structural steel erection (3)
- Excavation work (5)
- Installing building equipment (3)
- Special trade contractors, nec (11)
