- Plumbing, heating, air-conditioning (25)
- Painting and paper hanging (1)
- Electrical work (19)
- Masonry and other stonework (6)
- Plastering, drywall, and insulation (1)
- Terrazzo, tile, marble and mosaic work (2)
- Carpentry work (5)
- Floor laying and floor work, nec (2)
- Roofing, siding, and sheetmetal work (3)
- Concrete work (3)
- Glass and glazing work (2)
- Excavation work (7)
- Wrecking and demolition work (2)
- Installing building equipment (4)
- Special trade contractors, nec (17)