- Structural steel erection (28)
- Glass and glazing work (40)
- Excavation work (642)
- Wrecking and demolition work (28)
- Installing building equipment (20)
- Special trade contractors, nec (690)
- Athletic and recreation facilities construction (13)
- Coating, caulking, and weather, water, and fireproofing (13)
- Service station equipment (1)
- Rigging and scaffolding (9)
- Exterior cleaning, including sandblasting (2)
- Home/office interiors finishing, furnishing and remodeling (14)
- Parking facility equipment and maintenance (1)
- Decontamination services (4)
- Building site preparation (5)
