- Structural steel erection (277)
- Glass and glazing work (268)
- Excavation work (865)
- Wrecking and demolition work (226)
- Installing building equipment (209)
- Special trade contractors, nec (7900)
- Athletic and recreation facilities construction (67)
- Coating, caulking, and weather, water, and fireproofing (39)
- Service station equipment (7)
- Rigging and scaffolding (43)
- Exterior cleaning, including sandblasting (69)
- Home/office interiors finishing, furnishing and remodeling (202)
- Parking facility equipment and maintenance (7)
- Decontamination services (17)
- Building site preparation (40)
