This industry comprises 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. The assignments undertaken by these establishments may involve any of the following activities: provision of advice, preparation of feasibility studies, preparation of preliminary and final plans and designs, provision of technical services during the construction or installation phase, inspection and evaluation of engineering projects, and related services.
Illustrative Examples:
Civil engineering services
Environmental engineering services
Construction engineering services
Mechanical engineering services
Engineers' offices
Robotics automation engineering services
✓ Small Business Eligibility at a Glance
Based on SBA Table of Small Business Size Standards (2024)
Size Standard
$25.5M average annual receipts
Measurement Period
3-year average
Standard Type
Revenue-Based
Applies To
All contracts under NAICS 541330
Set-Aside Programs
8(a), WOSB, HUBZone, SDVOSB
Certification Required
No (self-certify in SAM.gov)
Size standards are set by the SBA and reviewed periodically. Always verify at SBA.gov before bidding.
Cross-References
The following activities are classified elsewhere in the NAICS system:
→Planning and designing computer systems that integrate computer hardware, software, and communication technologies--are classified in U.S. Industry 541512, Computer Systems Design Services;
→Designing and writing custom software to meet the needs of a particular customer--are classified in U.S. Industry 541511, Custom Computer Programming Services;
→Software design, development, and publishing, or software publishing only--are classified in Industry 513210, Software Publishers;
→Performing surveying and mapping services of the surface of the earth, including the sea floor--are classified in Industry 541370, Surveying and Mapping (except Geophysical) Services;
→Gathering, interpreting, and mapping geophysical data--are classified in Industry 541360, Geophysical Surveying and Mapping Services;
→Creating and developing designs and specifications that optimize the use, value, and appearance of products--are classified in Industry 541420, Industrial Design Services;
→Providing advice and assistance to others on environmental issues, such as the control of environmental contamination from pollutants, toxic substances, and hazardous materials--are classified in Industry 541620, Environmental Consulting Services;
→Engineering research and development--are classified in U.S. Industry 541715, Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology); and
→Both the design and construction of buildings, highways, and other structures or in managing construction projects--are classified in Sector 23, Construction, according to the type of project.
How to Use NAICS 541330 in SAM.gov
NAICS code 541330 — Engineering Services — is used in SAM.gov to identify businesses whose primary activity falls within this classification. When you add this code to your SAM.gov entity registration, contracting officers searching for vendors in the Architectural, Engineering, and Related Services space will be able to find your business.
If this code represents your primary business activity, designate it as your primary NAICS code. Your primary NAICS code determines your size standard for any contract solicited under this code. With a size standard of $25.5M average annual receipts, your business must be at or below this threshold to qualify as a small business for set-aside contracts under NAICS 541330.
NAICS code 541330 is 'Engineering Services', classified under the Professional, Scientific, and Technical Services sector (NAICS 54). This industry comprises establishments primarily engaged in applying physical laws and principles of engineering in the design, development, and utilization of machines, materials, instruments, struct
What is the SBA small business size standard for NAICS code 541330?
The SBA defines a small business under NAICS code 541330 (Engineering Services) as one with $25.5M average annual receipts. This size standard determines eligibility for small business set-aside contracts, 8(a), HUBZone, WOSB, and SDVOSB programs in SAM.gov.
How do I register NAICS code 541330 in SAM.gov?
To register NAICS code 541330 in SAM.gov: (1) Log in at sam.gov, (2) Navigate to your Entity Registration, (3) Go to the Assertions section, (4) Add 541330 (Engineering Services) to your NAICS code list. You may designate one code as your Primary NAICS code.