- Plumbing, heating, air-conditioning (10)
- Painting and paper hanging (2)
- Electrical work (4)
- Masonry and other stonework (2)
- Plastering, drywall, and insulation (1)
- Terrazzo, tile, marble and mosaic work (1)
- Carpentry work (5)
- Floor laying and floor work, nec (1)
- Roofing, siding, and sheetmetal work (5)
- Glass and glazing work (1)
- Excavation work (3)
- Special trade contractors, nec (4)