Major Group: 17—Construction Special Trade Contractors

This major group includes special trade contractors who undertake activities of a type that are specialized either to building construction, including work on mobile homes, or to both building and nonbuilding projects. These activities include painting (including bridge painting and traffic lane painting), electrical work (including work on bridges, power lines, and power plants), carpentry work, plumbing, heating, air-conditioning, roofing, and sheet metal work. Special trade contractors primarily engaged in activities that are clearly of a type specialized to heavy construction, such as grading for highways and airport runways; guardrail construction; installation of highway signs; underwater rock removal; and asphalt and concrete construction of roads, highways, streets, and public sidewalks are classified in Major Group 16.

Special trade contractors may work on subcontract from the general contractor, performing only part of the work covered by the general contract, or they may work directly for the owner. Special trade contractors for the most part perform their work at the site of construction, although they also may have shops where they perform work incidental to the job site.

Codes Titles Number of US Businesses
Industry Group 171: Plumbing, Heating And Air-conditioning
1711Plumbing, Heating and Air-Conditioning167,104
Industry Group 172: Painting And Paper Hanging
1721Painting and Paper Hanging83,903
Industry Group 173: Electrical Work
1731Electrical Work111,512
Industry Group 174: Masonry, Stonework, Tile Setting, And Plastering
1741Masonry, Stone Setting, and Other Stone Work21,385
1742Plastering, Drywall, Acoustical, and Insulation Work27,616
1743Terrazzo, Tile, Marble, and Mosaic Work19,925
Industry Group 175: Carpentry And Floor Work
1751Carpentry Work42,915
1752Floor Laying and Other Floor Work, Not Elsewhere Classified16,174
Industry Group 176: Roofing, Siding, And Sheet Metal Work
1761Roofing, Siding, and Sheet Metal Work50,020
Industry Group 177: Concrete Work
1771Concrete Work38,779
Industry Group 178: Water Well Drilling
1781Water Well Drilling5,932
Industry Group 179: Miscellaneous Special Trade Contractors
1791Structural Steel Erection4,541
1793Glass and Glazing Work4,846
1794Excavation Work33,157
1795Wrecking and Demolition Work3,529
1796Installation or Erection of Building Equipment, Not Elsewhere2,607
1799Special Trade Contractors, Not Elsewhere Classified118,050