- Plumbing, heating, air-conditioning (16)
- Painting and paper hanging (8)
- Electrical work (15)
- Masonry and other stonework (5)
- Plastering, drywall, and insulation (3)
- Terrazzo, tile, marble and mosaic work (2)
- Carpentry work (8)
- Floor laying and floor work, nec (3)
- Roofing, siding, and sheetmetal work (8)
- Concrete work (5)
- Water well drilling (2)
- Glass and glazing work (1)
- Excavation work (10)
- Wrecking and demolition work (1)
- Installing building equipment (1)
- Special trade contractors, nec (24)
