- Structural steel erection (77)
- Glass and glazing work (54)
- Excavation work (311)
- Wrecking and demolition work (28)
- Installing building equipment (16)
- Special trade contractors, nec (973)
- Athletic and recreation facilities construction (14)
- Coating, caulking, and weather, water, and fireproofing (6)
- Service station equipment (3)
- Rigging and scaffolding (5)
- Exterior cleaning, including sandblasting (7)
- Home/office interiors finishing, furnishing and remodeling (21)
- Parking facility equipment and maintenance (2)
- Decontamination services (2)
- Building site preparation (8)
