Naics Codes - North American Industry Classification System (NAICS)

23 NAICS Code - Construction :


NAICS Code Title
23 Construction
236 Construction of Buildings
237 Heavy and Civil Engineering Construction
238 Specialty Trade Contractors
2361 Residential Building Construction
2362 Nonresidential Building Construction
2371 Utility System Construction
2372 Land Subdivision
2373 Highway, Street, and Bridge Construction
2379 Other Heavy and Civil Engineering Construction
2381 Foundation, Structure, and Building Exterior Contractors
2382 Building Equipment Contractors
2383 Building Finishing Contractors
2389 Other Specialty Trade Contractors
23611 Residential Building Construction
236115 New Single-Family Housing Construction (except Operative Builders)
236116 New Multifamily Housing Construction (except Operative Builders)
236117 New Housing Operative Builders
236118 Residential Remodelers
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
237210 Land Subdivision
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
238150 Glass and Glazing Contractors
238160 Roofing Contractors
238170 Siding Contractors
238190 Other Foundation, Structure, and Building Exterior Contractors
238210 Electrical 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
238340 Tile and Terrazzo Contractors
238350 Finish Carpentry Contractors
238390 Other Building Finishing Contractors
238910 Site Preparation Contractors
238990 All Other Specialty Trade Contractors

How to Read a NAICS Code ?

The first two digits designate the largest business sector, the third digit designates the subsector, the fourth digit designates the industry group, and the fifth digit designates particular industries. The last digit designates national industries.

For Example :

Sector 11 Agriculture, Forestry, Fishing, Hunting
Subsector 111 Crop Production
Industry Group 1113 Fruit and Tree Nut Farming
Industry 11133 Non-citrus Fruit and Tree Nut Farming
U.S. Industry 111331 Apple Orchards
The NAICS numbering system employs six-digit code at the most detailed industry level. The first five digits are generally (although not always strictly) the same in all three countries. The first two digits designate the largest business sector, the third digit designates the subsector, the fourth digit designates the industry group, the fifth digit designates the NAICS industries, and the sixth digit designates the national industries