23 Construction
236 Construction of Buildings
2361 Residential Building Construction
23611 Residential Building Construction
2362 Non-residential Building Construction
23621 Industrial Building and Structure Construction
23622 Commercial and Institutional Building Construction
237 Heavy and Civil Engineering Construction
2371 Utility System Construction
23711 Water and Sewer Line and Related Structures Construction
23712 Oil and Gas Pipeline and Related Structures Construction
23713 Power and Communication Line and Related Structures Construction
2372 Land Subdivision
23721 Land Subdivision
2373 Highway, Street and Bridge Construction
23731 Highway, Street and Bridge Construction
2379 Other Heavy and Civil Engineering Construction
23799 Other Heavy and Civil Engineering Construction
238 Specialty Trade Contractors
2381 Foundation, Structure, and Building Exterior Contractors
23811 Poured Concrete Foundation and Structure Contractors
23812 Structural Steel and Precast Concrete Contractors
23813 Framing Contractors
23814 Masonry Contractors
23815 Glass and Glazing Contractors
23816 Roofing Contractors
23817 Siding Contractors
23819 Other Foundation, Structure and Building Exterior Contractors
2382 Building Equipment Contractors
23821 Electrical Contractors and Other Wiring Installation Contractors
23822 Plumbing, Heating and Air-Conditioning Contractors
23829 Other Building Equipment Contractors
238291 Elevator and Escalator Installation Contractors
238299 All Other Building Equipment Contractors
2383 Building Finishing Contractors
23831 Drywall and Insulation Contractors
23832 Painting and Wall Covering Contractors
23833 Flooring Contractors
23834 Tile and Terrazzo Contractors
23835 Finish Carpentry Contractors
23839 Other Building Finishing Contractors
2389 Other Specialty Trade Contractors
23891 Site Preparation Contractors
23899 All Other Specialty Trade Contractors
Date modified: