- Plumbing, heating, air-conditioning (39)
- Painting and paper hanging (26)
- Electrical work (31)
- Masonry and other stonework (3)
- Plastering, drywall, and insulation (12)
- Terrazzo, tile, marble and mosaic work (2)
- Carpentry work (14)
- Floor laying and floor work, nec (6)
- Roofing, siding, and sheetmetal work (17)
- Concrete work (14)
- Water well drilling (1)
- Structural steel erection (2)
- Glass and glazing work (1)
- Excavation work (7)
- Installing building equipment (1)
- Special trade contractors, nec (18)
