- General Contractors-Industrial Buildings and Warehouses
– sic code 1541 / 207 companies - General Contractors-Nonresidential Buildings, Other than Industrial Buildings and Warehouses
– sic code 1542 / 745 companies - General Contractors-Residential Buildings, Other Than Single-Family
– sic code 1522 / 86 companies - General Contractors-Single-Family Houses
– sic code 1521 / 484 companies - Operative Builders