- Plumbing, heating, air-conditioning (14)
- Painting and paper hanging (11)
- Electrical work (9)
- Masonry and other stonework (2)
- Terrazzo, tile, marble and mosaic work (1)
- Carpentry work (2)
- Floor laying and floor work, nec (5)
- Roofing, siding, and sheetmetal work (3)
- Concrete work (7)
- Excavation work (4)
- Installing building equipment (1)
- Special trade contractors, nec (7)
