- Structural steel erection (69)
- Glass and glazing work (80)
- Excavation work (724)
- Wrecking and demolition work (44)
- Installing building equipment (62)
- Special trade contractors, nec (1369)
- Athletic and recreation facilities construction (11)
- Coating, caulking, and weather, water, and fireproofing (7)
- Rigging and scaffolding (5)
- Exterior cleaning, including sandblasting (13)
- Home/office interiors finishing, furnishing and remodeling (17)
- Parking facility equipment and maintenance (2)
- Decontamination services (5)
- Building site preparation (5)
