- Plumbing, heating, air-conditioning (13)
- Painting and paper hanging (6)
- Electrical work (20)
- Masonry and other stonework (3)
- Plastering, drywall, and insulation (7)
- Terrazzo, tile, marble and mosaic work (2)
- Carpentry work (1)
- Roofing, siding, and sheetmetal work (7)
- Concrete work (5)
- Water well drilling (5)
- Glass and glazing work (1)
- Excavation work (9)
- Special trade contractors, nec (13)
