NAICS Code for Engineering Firm
The primary NAICS code for Engineering Firm is 237990 — Other Heavy and Civil Engineering Construction. Businesses classified under NAICS 237990 (Other Heavy and Civil Engineering Construction) are involved 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 (such as dredging and land drainage), development of marine facilities, and projects involving open space improvement (such as parks and trails) are included in this industry. Typical activities include: Building and structure construction), Heavy and civil engineering construction projects (excluding highway, Street, Bridge, Distribution line construction). Related codes include 336310 (Motor Vehicle Gasoline Engine and Engine Parts Manufacturing), 336412 (Aircraft Engine and Engine Parts Manufacturing), 541330 (Engineering Services).
Primary NAICS Code
237990Other Heavy and Civil Engineering ConstructionAlso commonly classified as:
321215Engineered Wood Member Manufacturing333618Other Engine Equipment ManufacturingAbout Engineering Firm
Businesses classified under NAICS 237990 (Other Heavy and Civil Engineering Construction) are involved 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 (such as dredging and land drainage), development of marine facilities, and projects involving open space improvement (such as parks and trails) are included in this industry.
Typical Business Activities
What's Included
- +Building and structure construction)
- +Heavy and civil engineering construction projects (excluding highway
- +Street
- +Bridge
- +Distribution line construction)
How to Determine Your NAICS Code
While 237990 (Other Heavy and Civil Engineering Construction) is the most common classification for engineering firm, your specific code depends on your primary revenue-generating activity. Review the included and excluded activities above to confirm this code fits your business. If your operations span multiple categories, use the code that best represents your largest source of revenue. You can also use the search tool below to describe your specific business activities and find the most accurate match.
Related NAICS Codes
Businesses in engineering firm may also fall under these codes:
Example Companies
KBR
KBR, Inc. (formerly Kellogg Brown & Root) is a U. S. based company operating in fields of science, technology and engineering.
Houston, Texas, United States
KBR
KBR, Inc. (formerly Kellogg Brown & Root) is a U. S. based company operating in fields of science, technology and engineering.
Houston, Texas, United States
Technip FMC
TechnipFMC is a global leader in energy projects, technologies, systems, and services providing clients with deep expertise across subsea and surface projects. Find out more.
London, England, United Kingdom
Kier Group
We are a leading provider of infrastructure services, construction and property developments, committed to delivering for communities and leaving lasting legacies through our work.
Salford, England, United Kingdom
Describe Your Business
Need a more specific NAICS code? Search by your business activity or company name: