The North American Industry Classification System (NAICS) is the standard used by federal agencies to classify business establishments. NAICS codes are essential for federal contracting as they determine small business size standards and are used to categorize contract opportunities.

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Construction NAICS Codes

COMMERCIAL AND INSTITUTIONAL BUILDING CONSTRUCTION

PLUMBING, HEATING, AND AIR-CONDITIONING CONTRACTORS

ELECTRICAL CONTRACTORS AND OTHER WIRING INSTALLATION CONTRACTORS

ALL OTHER SPECIALTY TRADE CONTRACTORS

HIGHWAY, STREET, AND BRIDGE CONSTRUCTION

OTHER HEAVY AND CIVIL ENGINEERING CONSTRUCTION

WATER AND SEWER LINE AND RELATED STRUCTURES CONSTRUCTION

OTHER BUILDING EQUIPMENT CONTRACTORS

ROOFING CONTRACTORS

SITE PREPARATION CONTRACTORS

POWER AND COMMUNICATION LINE AND RELATED STRUCTURES CONSTRUCTION

PAINTING AND WALL COVERING CONTRACTORS

FLOORING CONTRACTORS

INDUSTRIAL BUILDING CONSTRUCTION

OTHER BUILDING FINISHING CONTRACTORS

OTHER FOUNDATION, STRUCTURE, AND BUILDING EXTERIOR CONTRACTORS

RESIDENTIAL REMODELERS

POURED CONCRETE FOUNDATION AND STRUCTURE CONTRACTORS

OIL AND GAS PIPELINE AND RELATED STRUCTURES CONSTRUCTION

GLASS AND GLAZING CONTRACTORS

DRYWALL AND INSULATION CONTRACTORS

MASONRY CONTRACTORS

FINISH CARPENTRY CONTRACTORS

STRUCTURAL STEEL AND PRECAST CONCRETE CONTRACTORS

SIDING CONTRACTORS

NEW MULTIFAMILY HOUSING CONSTRUCTION (EXCEPT FOR-SALE BUILDERS)

FRAMING CONTRACTORS

NEW SINGLE-FAMILY HOUSING CONSTRUCTION (EXCEPT FOR-SALE BUILDERS)

TILE AND TERRAZZO CONTRACTORS

LAND SUBDIVISION

NEW HOUSING FOR-SALE BUILDERS

COMMERCIAL AND INSTITUTIONAL BUILDING CONSTRUCTION

ALL OTHER HEAVY CONSTRUCTION

INDUSTRIAL NONBUILDING STRUCTURE CONSTRUCTION

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