- Plumbing, heating, air-conditioning (11)
- Painting and paper hanging (2)
- Electrical work (8)
- Masonry and other stonework (1)
- Plastering, drywall, and insulation (2)
- Terrazzo, tile, marble and mosaic work (1)
- Carpentry work (6)
- Roofing, siding, and sheetmetal work (3)
- Concrete work (2)
- Water well drilling (1)
- Excavation work (1)
- Wrecking and demolition work (1)
- Special trade contractors, nec (8)
