Standard Industrial Classification
- 1541 - Industrial Buildings and Warehouses
- 1542 - Nonresidential Construction, NEC
- 1611 - Highway and Street Construction
- 1622 - Bridge, Tunnel, & Elevated Highway
- 1629 - Heavy Construction, NEC
- 1794 - Excavation Work
- 4492 - Towing and Tugboat Services
- 6552 - Subdividers and Developers, NEC
- 8711 - Engineering Services
- 8741 - Management Services
- 8742 - Management Consulting Services
- 8744 - Facilities Support Services
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North American Industry Classification System
- 221310 - Water Supply and Irrigation Systems
- 236210 - Industrial Building Construction
- 236220 - Commercial and Institutional Building Construction
- 237110 - Water & Sewer Line and Related Structures Construction
- 237210 - Land Subdivision
- 237310 - Highway, Street, and Bridge Construction
- 237990 - Other Heavy and Civil Engineering Construction
- 238910 - Site Preparation Contractors
- 488330 - Navigational Services to Shipping
- 561210 - Facilities Support Services
- 238210 - Electrical Contractors and other Wiring Installation Contractors
- 238990 - All Other Specialty Trade Contractors
- 484220 - Specialized Freight (except used goods) Trucking, Local
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