- Plumbing, heating, air-conditioning (56)
- Painting and paper hanging (47)
- Electrical work (63)
- Masonry and other stonework (22)
- Plastering, drywall, and insulation (22)
- Terrazzo, tile, marble and mosaic work (9)
- Carpentry work (22)
- Floor laying and floor work, nec (14)
- Roofing, siding, and sheetmetal work (24)
- Concrete work (31)
- Water well drilling (5)
- Glass and glazing work (4)
- Excavation work (34)
- Wrecking and demolition work (1)
- Installing building equipment (1)
- Special trade contractors, nec (52)
