NAICS Codes
221122 Electric Power Distribution
221210 Natural Gas Distribution
221310 Water Supply and Irrigation Systems
221320 Sewage Treatment Facilities
221330 Steam and Air-Conditioning Supply
236210 Industrial Building Construction
236220 Commercial and Institutional Building Construction
237110 Water and Sewer Line and Related Structures Construction
237120 Oil and Gas Pipeline and Related Structures Construction
237130 Power and Communication Line and Related Structures Construction
237310 Highway, Street, and Bridge Construction
237990 Other Heavy and Civil Engineering Construction
238110 Poured Concrete Foundation and Structure Contractors
238120 Structural Steel and Precast Concrete Contractors
238130 Framing Contractors
238140 Masonry Contractors
238160 Roofing Contractors
238190 Other Foundation, Structure, and Building Exterior Contractors
238210 Electrical Contractors and Other Wiring Installation Contractors
238220 Plumbing, Heating, and Air-Conditioning Contractors
238290 Other Building Equipment Contractors
238310 Drywall and Insulation Contractors
238320 Painting and Wall Covering Contractors
238330 Flooring Contractors
238350 Finish Carpentry Contractors
238390 Other Building Finishing Contractors
238910 Site Preparation Contractors
238990 All Other Specialty Trade Contractors
315990 Apparel Accessories and Other Apparel Manufacturing
444190 Other Building Material Dealers
541350 Building Inspection Services
541618 Other Management Consulting Services
541990 All Other Professional, Scientific, and Technical Services
561210 Facilities Support Services
