NAICS Codes for Federal Contracting

Establishments primarily engaged in planning and designing computer systems that integrate computer hardware, software, and communication technologies. Services include systems-engineering, custom software development, and technology-consulting engagements scoped to a specific client project.

Establishments primarily engaged in writing, modifying, testing, and supporting software to meet the needs of a particular customer.

Establishments primarily engaged in providing computer-related services (except custom programming, systems integration design, facilities management, and leasing).

Establishments primarily engaged in providing operating advice and assistance to businesses and other organizations on administrative management issues.

Establishments primarily engaged in applying physical laws and principles of engineering in the design, development, and utilization of machines, materials, instruments, structures, processes, and systems.

Establishments primarily engaged in providing professional, scientific, or technical services (except those specifically classified elsewhere).

Establishments primarily responsible for the construction (including new work, additions, alterations, maintenance, and repairs) of commercial and institutional buildings and related structures.

Establishments primarily engaged in providing operating staff to perform a combination of support services within a client's facilities.

Establishments primarily engaged in cleaning building interiors, interiors of transportation equipment, and/or windows.

Establishments of health practitioners having the degree of M.D. or D.O. primarily engaged in the independent practice of general or specialized medicine.

Establishments primarily engaged in conducting research and experimental development (except nanotechnology and biotechnology research and experimental development) in the physical, engineering, and life sciences.

Establishments primarily engaged in translating written material and interpreting speech from one language to another.

Establishments primarily engaged in providing on-site management and operation of a client's computer systems and data processing facilities. In federal work this is the classic 'run our data center / manage our infrastructure' scope.

Establishments primarily engaged in providing advice and assistance on human resource policies, practices, compensation, benefits, and workforce planning.

Establishments primarily engaged in providing operating advice on materials management, inventory, distribution networks, and logistics processes.

Management consulting not classified elsewhere, including telecommunications and utilities management consulting and specialized advisory work.

Establishments primarily engaged in advising on environmental issues — contamination assessment, remediation planning, regulatory compliance, and environmental impact analysis.

Scientific and technical advisory services not classified elsewhere, including agricultural, biological, chemical, physics, and safety consulting.

Establishments primarily engaged in planning and designing buildings and structures. Federal architectural work is typically procured under Brooks Act qualifications-based selection rather than price competition.

Establishments primarily engaged in surveying and mapping the surface of the earth, including boundary, topographic, hydrographic, and geospatial data services.

Establishments primarily engaged in performing physical, chemical, and other analytical testing services.

Establishments primarily engaged in constructing industrial buildings — manufacturing plants, laboratories, power facilities, and similar structures.

Establishments primarily engaged in constructing water and sewer lines, mains, pumping stations, and treatment plants.

Establishments primarily engaged in constructing highways, streets, roads, airport runways, and bridges.

Heavy and civil engineering construction not classified elsewhere — dams, marine facilities, dredging, and similar large civil works.

Establishments primarily engaged in installing and servicing electrical wiring and equipment, including low-voltage and communications cabling.

Establishments primarily engaged in installing and servicing plumbing, heating, ventilation, air-conditioning, and refrigeration systems.

Specialty trade contractors not classified elsewhere, including paving, fencing, and miscellaneous site work.

Establishments primarily engaged in providing a range of day-to-day office administrative services on a contract or fee basis.

Establishments primarily engaged in supplying workers to client businesses for limited periods to supplement the client's workforce.

Establishments primarily engaged in providing guard and patrol services, including armed and unarmed protective services for federal facilities.

Establishments primarily engaged in selling, installing, servicing, and monitoring security and alarm systems, including electronic access control.

Establishments primarily engaged in landscape care and maintenance, including grounds maintenance on federal installations.

Building services not classified elsewhere, including duct cleaning, pressure washing, and specialized building maintenance.

Establishments primarily engaged in providing document preparation, editing, transcription, and word processing services.

Establishments primarily engaged in providing computing infrastructure, data processing, hosting, and related services — the NAICS most cloud service procurements map to.

Establishments primarily engaged in manufacturing search, detection, navigation, guidance, and aeronautical systems — one of the largest defense manufacturing categories by dollar value.

Establishments primarily engaged in manufacturing or developing complete aircraft, and in aircraft conversion and overhaul.

Establishments primarily engaged in operating shipyards for building, repairing, and overhauling ships and other large vessels.

Establishments primarily engaged in fabricating structural metal products such as bridge sections, building components, and towers.

Establishments primarily engaged in providing analytic or diagnostic laboratory services to the medical profession or the patient.

Establishments primarily engaged in providing diagnostic and medical treatment to inpatients, including contracted hospital and clinical staffing.

Establishments primarily engaged in providing long-distance general freight truckload trucking.

Establishments primarily engaged in operating warehousing and storage facilities for general merchandise and government materiel.

Establishments primarily engaged in offering training for managers and professionals, including federal workforce and leadership development.

Establishments primarily engaged in providing non-instructional services that support educational processes, including training support and instructional systems design.

Establishments primarily engaged in remediating contaminated buildings, mine sites, soil, and groundwater — a major category for DoD and DOE environmental cleanup programs.

Establishments primarily engaged in repairing and maintaining electronic and precision equipment, including communications and medical equipment.