- Plumbing, heating, air-conditioning (27)
- Painting and paper hanging (15)
- Electrical work (23)
- Masonry and other stonework (1)
- Plastering, drywall, and insulation (7)
- Terrazzo, tile, marble and mosaic work (2)
- Carpentry work (10)
- Floor laying and floor work, nec (4)
- Roofing, siding, and sheetmetal work (6)
- Concrete work (9)
- Water well drilling (2)
- Structural steel erection (1)
- Glass and glazing work (1)
- Excavation work (17)
- Special trade contractors, nec (15)
