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Government contracting · 2022

NAICS codes

The North American Industry Classification System describes the work a business does. Search the complete Census 2022 hierarchy by code or by words in its official description.

2125 NAICS codes. Page 5 of 43.

23611 Residential Building Construction

This industry comprises establishments primarily responsible for the construction or remodeling and renovation of single-family and multifamily residential buildings. Included in this industry are residential housing general contractors (i.e., new construction, remodeling, or renovating existing residential structures), for-sale builders and remodelers of residential structures, residential project construction management firms, and residential design-build firms. Cross-References. Establishments primarily engaged in--

236115 New Single-Family Housing Construction (except For-Sale Builders)

This U.S. industry comprises general contractor establishments primarily responsible for the entire construction of new single-family housing, such as single-family detached houses and town houses or row houses where each housing unit (1) is separated from its neighbors by a ground-to-roof wall and (2) has no housing units constructed above or below. This industry includes general contractors responsible for the on-site assembly of modular and prefabricated houses. Single-family housing design-build firms and single-family construction management firms acting as general contractors are included in this industry. Cross-References. Establishments primarily engaged in--

236116 New Multifamily Housing Construction (except For-Sale Builders)

This U.S. industry comprises general contractor establishments primarily responsible for the construction of new multifamily residential housing units (e.g., high-rise, garden, town house apartments, and condominiums where each unit is not separated from its neighbors by a ground-to-roof wall). Multifamily design-build firms and multifamily housing construction management firms acting as general contractors are included in this industry. Cross-References. Establishments primarily engaged in--

236117 New Housing For-Sale Builders

This U.S. industry comprises establishments primarily engaged in building new homes on land that is owned or controlled by the builder rather than the homebuyer or investor. The land is included with the sale of the home. Establishments in this industry build single-family and/or multifamily homes. These establishments are often referred to as merchant builders, but are also known as production or for-sale builders. Cross-References. Establishments primarily engaged in--

236118 Residential Remodelers

This U.S. industry comprises establishments primarily responsible for the remodeling construction (including additions, alterations, reconstruction, maintenance, and repairs) of houses and other residential buildings, single-family and multifamily. Included in this industry are remodeling general contractors, for-sale remodelers, remodeling design-build firms, and remodeling project construction management firms. Cross-References. Establishments primarily engaged in--

2362 Nonresidential Building Construction

This industry group comprises establishments primarily responsible for the construction (including new work, additions, alterations, maintenance, and repairs) of nonresidential buildings. This industry group includes nonresidential general contractors, nonresidential for-sale builders, nonresidential design-build firms, and nonresidential project construction management firms.

236210 Industrial Building Construction

This industry comprises establishments primarily responsible for the construction (including new work, additions, alterations, maintenance, and repairs) of industrial buildings (except warehouses). The construction of selected additional structures, whose production processes are similar to those for industrial buildings (e.g., incinerators, cement plants, blast furnaces, and similar nonbuilding structures), is included in this industry. Included in this industry are industrial building general contractors, industrial building for-sale builders, industrial building design-build firms, and industrial building construction management firms. Illustrative Examples: Assembly plant construction Furnace, industrial plant, construction Cannery construction Mine loading and discharging station construction Cement plant construction Paper or pulp mill construction Steel mill construction Chemical plant (except petrochemical) construction Pharmaceutical manufacturing plant construction Factory construction Food processing plant construction Waste disposal plant (except sewage treatment) construction Cross-References. Establishments primarily engaged in--

236220 Commercial and Institutional Building Construction

This industry comprises establishments primarily responsible for the construction (including new work, additions, alterations, maintenance, and repairs) of commercial and institutional buildings and related structures, such as stadiums, grain elevators, and indoor swimming facilities. This industry includes establishments responsible for the on-site assembly of modular or prefabricated commercial and institutional buildings. Included in this industry are commercial and institutional building general contractors, commercial and institutional building for-sale builders, commercial and institutional building design-build firms, and commercial and institutional building project construction management firms. Illustrative Examples: Airport building construction Office building construction Arena construction Parking garage construction Barrack construction Prison construction Farm building construction Radio and television broadcast studio construction Fire station construction Grain elevator or bin construction Data center construction Religious building (e.g., church, synagogue, mosque, temple) construction Restaurant construction Hospital construction School building construction Hotel construction Shopping mall construction Indoor swimming facility construction Warehouse construction (e.g., commercial, industrial, manufacturing, private) Cross-References. Establishments primarily engaged in--

237 Heavy and Civil Engineering Construction

The Heavy and Civil Engineering Construction subsector comprises establishments whose primary activity is the construction of entire engineering projects (e.g., highways and dams), and specialty trade contractors, whose primary activity is the production of a specific component for such projects. Specialty trade contractors in the Heavy and Civil Engineering Construction subsector generally are performing activities that are specific to heavy and civil engineering construction projects and are not normally performed on buildings. The work performed may include new work, additions, alterations, or maintenance and repairs. Specialty trade activities are classified in this subsector if the skills and equipment present are specific to heavy or civil engineering construction projects. For example, specialized equipment is needed to paint lines on highways. This equipment is not normally used in building applications so the activity is classified in this subsector. Traffic signal installation, while specific to highways, uses much of the same skills and equipment that are needed for electrical work in building projects and is therefore classified in Subsector 238, Specialty Trade Contractors. Construction projects involving water resources (e.g., dredging and land drainage) and projects involving open space improvement (e.g., parks and trails) are included in this subsector. Establishments whose primary activity is the subdivision of land into individual building lots usually perform various additional site-improvement activities (e.g., road building and utility line installation) and are included in this subsector. Establishments in this subsector are classified based on the types of structures that they construct. This classification reflects variations in the requirements of the underlying production processes.

2371 Utility System Construction

This industry group comprises establishments primarily engaged in the construction of distribution lines and related buildings and structures for utilities (i.e., water, sewer, petroleum, gas, power, and communication). All structures (including buildings) that are integral parts of utility systems (e.g., storage tanks, pumping stations, power plants, and refineries) are included in this industry group.

237110 Water and Sewer Line and Related Structures Construction

This industry comprises establishments primarily engaged in the construction of water and sewer lines, mains, pumping stations, treatment plants, and storage tanks. The work performed may include new work, reconstruction, rehabilitation, and repairs. Specialty trade contractors are included in this industry if they are engaged in activities primarily related to water, sewer line, and related structures construction. All structures (including buildings) that are integral parts of water and sewer networks (e.g., storage tanks, pumping stations, water treatment plants, and sewage treatment plants) are included in this industry. Illustrative Examples: Distribution line, sewer and water, construction Sewer main, pipe and connection, construction Fire hydrant installation Storm sewer construction Irrigation systems construction Water main and line construction Sewage disposal plant construction Water treatment plant construction Pumping station, water and sewage system, construction Water system storage tank and tower construction Reservoir construction Water well drilling, digging, boring, or sinking (except water intake wells in oil and gas fields) Cross-References. Establishments primarily engaged in--

237120 Oil and Gas Pipeline and Related Structures Construction

This industry comprises establishments primarily engaged in the construction of oil and gas lines, mains, refineries, and storage tanks. The work performed may include new work, reconstruction, rehabilitation, and repairs. Specialty trade contractors are included in this industry if they are engaged in activities primarily related to oil and gas pipeline and related structures construction. All structures (including buildings) that are integral parts of oil and gas networks (e.g., storage tanks, pumping stations, and refineries) are included in this industry. Illustrative Examples: Distribution line, gas and oil, construction Oil refinery construction Gas main construction Petrochemical plant construction Gathering line, gas and oil field, construction Natural gas pipeline construction Pumping station, gas and oil transmission, construction Storage tank, natural gas or oil, tank farm or field, construction Natural gas processing plant construction Cross-References. Establishments primarily engaged in--

237130 Power and Communication Line and Related Structures Construction

This industry comprises establishments primarily engaged in the construction of power lines and towers, power plants, and radio, television, and telecommunications transmitting/receiving towers. The work performed may include new work, reconstruction, rehabilitation, and repairs. Specialty trade contractors are included in this industry if they are engaged in activities primarily related to power and communication line and related structures construction. All structures (including buildings) that are integral parts of power and communication networks (e.g., transmitting towers, substations, and power plants) are included. Illustrative Examples: Alternative energy (e.g., geothermal, ocean wave, solar, wind) structure construction Power line stringing Cellular phone tower construction Radio transmitting tower construction Co-generation plant construction Satellite receiving station construction Communication tower construction Nuclear power plant construction Telephone line stringing Electric light and power plant (except hydroelectric) construction Transformer station and substation, electric power, construction Electric power transmission line and tower construction Underground cable (e.g., fiber optic, electricity, telephone, cable television) laying Cross-References. Establishments primarily engaged in--

237210 Land Subdivision

This industry comprises establishments primarily engaged in servicing land and subdividing real property into lots, for subsequent sale to builders. Servicing of land may include excavation work for the installation of roads and utility lines. The extent of work may vary from project to project. Land subdivision precedes building activity and the subsequent building is often residential, but may also be commercial tracts and industrial parks. These establishments may do all the work themselves or subcontract the work to others. Establishments that perform only the legal subdivision of land are not included in this industry. Cross-References. Establishments primarily engaged in--

237310 Highway, Street, and Bridge Construction

This industry comprises establishments primarily engaged in the construction of highways (including elevated), streets, roads, airport runways, public sidewalks, or bridges. The work performed may include new work, reconstruction, rehabilitation, and repairs. Specialty trade contractors are included in this industry if they are engaged in activities primarily related to highway, street, and bridge construction (e.g., installing guardrails on highways). Illustrative Examples: Airport runway construction Highway line painting Causeway construction Painting traffic lanes or parking lot lines Culverts, highway, road, and street, construction Pothole filling, highway, road, street, or bridge Elevated highway construction Resurfacing, highway, road, street, or bridge Guardrail construction Sign erection, highway, road, street, or bridge Cross-References. Establishments primarily engaged in--

237990 Other Heavy and Civil Engineering Construction

This industry comprises establishments primarily engaged in heavy and civil engineering construction projects (excluding highway, street, bridge, and distribution line construction). The work performed may include new work, reconstruction, rehabilitation, and repairs. Specialty trade contractors are included in this industry if they are engaged in activities primarily related to heavy and civil engineering construction projects (excluding highway, street, bridge, distribution line, oil and gas structure, and utilities building and structure construction). Construction projects involving water resources (e.g., dredging and land drainage), development of marine facilities, and projects involving open space improvement (e.g., parks and trails) are included in this industry. Illustrative Examples: Channel construction Land drainage contractors Dam construction Marine construction Dock construction Microtunneling contractors Dredging (e.g., canal, channel, ditch, waterway) Nuclear waste disposal site construction Earth retention system construction Flood control project construction Park ground and recreational open space improvement construction Railroad construction Golf course construction Subway construction Horizontal drilling (e.g., cable, pipeline, sewer installation) Trenching, underwater Hydroelectric generating station construction Tunnel construction Cross-References. Establishments primarily engaged in--

238 Specialty Trade Contractors

The Specialty Trade Contractors subsector comprises establishments whose primary activity is performing specific activities (e.g., pouring concrete, site preparation, plumbing, painting, and electrical work) involved in building construction or other activities that are similar for all types of construction, but that are not responsible for the entire project. The work performed may include new work, additions, alterations, maintenance, and repairs. The production work performed by establishments in this subsector is usually subcontracted from establishments of the general contractor type or for-sale builders, but especially in remodeling and repair construction, work also may be done directly for the owner of the property. Specialty trade contractors usually perform most of their work at the construction site, although they may have shops where they perform prefabrication and other work. Establishments primarily engaged in preparing sites for new construction are also included in this subsector. There are substantial differences in types of equipment, work force skills, and other inputs required by specialty trade contractors. Establishments in this subsector are classified based on the underlying production function for the specialty trade in which they specialize. Throughout the Specialty Trade Contractors subsector, establishments commonly provide both the parts and labor required to complete work. For example, electrical contractors supply the current-carrying and noncurrent-carrying wiring devices that are required to install a circuit. Plumbing, heating, and air-conditioning contractors also supply the parts required to complete a contract. Establishments that specialize in activities primarily related to heavy and civil engineering construction that are not normally performed on buildings, such as the painting of lines on highways, are classified in Subsector 237, Heavy and Civil Engineering Construction. Establishments that are primarily engaged in selling construction materials are classified in Sector 42, Wholesale Trade, or Sector 44-45, Retail Trade, based on the characteristics of the selling unit.

2381 Foundation, Structure, and Building Exterior Contractors

This industry group comprises establishments primarily engaged in the specialty trades needed to complete the basic structure (i.e., foundation, frame, and shell) of buildings. The work performed may include new work, additions, alterations, maintenance, and repairs.

238110 Poured Concrete Foundation and Structure Contractors

This industry comprises establishments primarily engaged in pouring and finishing concrete foundations and structural elements. This industry also includes establishments performing grout and shotcrete work. The work performed may include new work, additions, alterations, maintenance, and repairs. Illustrative Examples: Concrete pouring and finishing Gunite contractors Concrete pumping (i.e., placement) Mud-jacking contractors Concrete work (except paving) Shotcrete contractors Footing and foundation concrete contractors Cross-References. Establishments primarily engaged in--

238120 Structural Steel and Precast Concrete Contractors

This industry comprises establishments primarily engaged in (1) erecting and assembling structural parts made from steel or precast concrete (e.g., steel beams, structural steel components, and similar products of precast concrete) and/or (2) assembling and installing other steel construction products (e.g., steel rods, bars, rebar, mesh, and cages) to reinforce poured-in-place concrete. The work performed may include new work, additions, alterations, maintenance, and repairs. Illustrative Examples: Concrete product (e.g., structural precast, structural prestressed) installation Rebar contractors Erecting structural steel Reinforcing steel contractors Placing and tying reinforcing rod at a construction site Structural steel contractors Precast concrete panel, slab, or form installation Cross-References. Establishments primarily engaged in--

238130 Framing Contractors

This industry comprises establishments primarily engaged in structural framing and sheathing using materials other than structural steel or concrete. The work performed may include new work, additions, alterations, maintenance, and repairs. Illustrative Examples: Building framing (except structural steel) Post framing contractors Foundation, building, wood, contractors Steel framing contractors Framing contractors Wood frame component (e.g., truss) fabrication on site Cross-References. Establishments primarily engaged in--

238140 Masonry Contractors

This industry comprises establishments primarily engaged in masonry work, stone setting, bricklaying, and other stone work. The work performed may include new work, additions, alterations, maintenance, and repairs. Illustrative Examples: Block laying Marble, granite, and slate, exterior, contractors Bricklaying Masonry pointing, cleaning, or caulking Concrete block laying Stucco contractors Foundation (e.g., brick, block, stone), building, contractors Cross-References. Establishments primarily engaged in--

238150 Glass and Glazing Contractors

This industry comprises establishments primarily engaged in installing glass panes in prepared openings (i.e., glazing work) and other glass work for buildings. The work performed may include new work, additions, alterations, maintenance, and repairs. Illustrative Examples: Decorative glass and mirror installation Glazing contractors Glass cladding installation Stained glass installation Window pane or sheet installation Glass coating and tinting (except automotive) contractors Glass installation (except automotive) contractors Cross-References. Establishments primarily engaged in--

238160 Roofing Contractors

This industry comprises establishments primarily engaged in roofing. This industry also includes establishments treating roofs (i.e., spraying, painting, or coating) and installing skylights. The work performed may include new work, additions, alterations, maintenance, and repairs. Illustrative Examples: Painting, spraying, or coating, roof Sheet metal roofing installation Shake and shingle, roof, installation Skylight installation Cross-References. Establishments primarily engaged in--

238170 Siding Contractors

This industry comprises establishments primarily engaged in installing siding of wood, aluminum, vinyl, or other exterior finish material (except brick, stone, stucco, or curtain wall). This industry also includes establishments installing gutters and downspouts. The work performed may include new work, additions, alterations, maintenance, and repairs. Illustrative Examples: Downspout, gutter, and gutter guard installation Fascia and soffit installation Siding (e.g., vinyl, wood, aluminum) installation Cross-References. Establishments primarily engaged in--

238190 Other Foundation, Structure, and Building Exterior Contractors

This industry comprises establishments primarily engaged in building foundation and structure trades work (except poured concrete, structural steel, precast concrete, framing, masonry, glass and glazing, roofing, and siding). The work performed may include new work, additions, alterations, maintenance, and repairs. Illustrative Examples: Curtain wall, metal, installation Forms for poured concrete, erecting and dismantling Welding, on-site, contractors Ornamental metal work installation Fire escape installation Decorative steel and wrought iron work installation Cross-References. Establishments primarily engaged in--

2382 Building Equipment Contractors

This industry group comprises establishments primarily engaged in installing or servicing equipment that forms part of a building mechanical system (e.g., electricity, water, heating, and cooling). The work performed may include new work, additions, alterations, maintenance, and repairs. Contractors installing specialized building equipment, such as elevators, escalators, service station equipment, and central vacuum cleaning systems, are also included.

238210 Electrical Contractors and Other Wiring Installation Contractors

This industry comprises establishments primarily engaged in installing and servicing electrical wiring and equipment. Contractors included in this industry may include both the parts and labor when performing work. These contractors may perform new work, additions, alterations, maintenance, and repairs. Illustrative Examples: Airport runway lighting contractors Fiber optic cable (except transmission line) contractors Alarm system (e.g., fire, burglar), electric, installation only Highway, street, and bridge lighting and electrical signal installation Audio equipment (except automotive) installation contractors Home automation system installation Lighting system installation Cable television hookup contractors Telecommunications equipment and wiring (except transmission line) installation contractors Computer and network cable installation Traffic signal installation Environmental control system installation Cable splicing, electrical or fiber optic Cross-References. Establishments primarily engaged in--

238220 Plumbing, Heating, and Air-Conditioning Contractors

This industry comprises establishments primarily engaged in installing and servicing plumbing, heating, and air-conditioning equipment. Contractors in this industry may provide both parts and labor when performing work. The work performed may include new work, additions, alterations, maintenance, and repairs. Illustrative Examples: Cooling tower installation Heating, ventilation, and air-conditioning (HVAC) contractors Duct work (e.g., cooling, dust collection, exhaust, heating, ventilation) installation Lawn sprinkler system installation Fire sprinkler system installation Mechanical contractors Fireplace, natural gas, installation Refrigeration system (e.g., commercial, industrial, scientific) installation Furnace installation Sewer hookup and connection, building Cross-References. Establishments primarily engaged in--

Source: U.S. Census Bureau, 2022 NAICS descriptions. Includes sectors, subsectors, industry groups, and industries.