- Plumbing, heating, air-conditioning (14)
- Painting and paper hanging (17)
- Electrical work (9)
- Masonry and other stonework (2)
- Plastering, drywall, and insulation (6)
- Terrazzo, tile, marble and mosaic work (1)
- Carpentry work (6)
- Roofing, siding, and sheetmetal work (8)
- Concrete work (6)
- Glass and glazing work (2)
- Excavation work (1)
- Special trade contractors, nec (13)
