- Plumbing, heating, air-conditioning (27)
- Painting and paper hanging (13)
- Electrical work (19)
- Masonry and other stonework (5)
- Plastering, drywall, and insulation (3)
- Terrazzo, tile, marble and mosaic work (3)
- Carpentry work (8)
- Floor laying and floor work, nec (4)
- Roofing, siding, and sheetmetal work (11)
- Concrete work (14)
- Glass and glazing work (2)
- Excavation work (5)
- Wrecking and demolition work (3)
- Special trade contractors, nec (29)
