| SIC Codes: | 1721 1731 1741 1742 1743 1751 1752 1761 1771 1791 1793 1796 1711 1623 6552 1611 1541 1522 1521 1389 1081 1622 |
| NAICS Codes: | 236118 238320 236220 237110 237120 237130 237210 237310 237990 238110 238120 238130 238140 238150 238160 238170 238190 238210 238220 238290 238310 236117 236116 236115 238990 238910 238390 238350 238340 238330 236210 |
Companies in this industry sector engage primarily in the construction and maintenance of buildings or infrastructure projects such as roads and bridges. General as well as specialty contractors are included. Establishments primarily engaged in preparing sites for new construction and establishments primarily engaged in subdividing land for sale as building sites also are included in this sector.