541330 — Engineering Services
Description
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
Overview Facts
| NAICS Code | 541330 |
|---|---|
| Industry Title | Engineering Services |
| SBA Size Standard | $25,500,000 |
| U.S. Establishments | 63,233 (Census CBP, 2023) |
| IRS PBA Code | 541330 (exact match) |
| Sectors Hierarchy | Sector 54 → 541 → 5413 |
| Source / Verified | US Census 2022 NAICS Manual, Census CBP / 2026-06-28 |
Legacy SIC Concordance
Trace the historical mapping chain from the 1987 Standard Industrial Classification (SIC) to the modern 2022 NAICS code format.
- SIC 8711 - Engineering Services (via SIC1987:8711→NAICS1997:54133→2002:541330→2007:541330→2012:541330→2017:541330→2022:541330)
- SIC 8748 - Business Consulting Services, NEC (via SIC1987:8748→NAICS1997:54133→2002:541330→2007:541330→2012:541330→2017:541330→2022:541330)
Suggested Product Service Codes (Advisory)
The following Product Service Codes (PSCs) are advisory suggestions aligned with this NAICS code. Note: NAICS and PSC codes map to different dimensions of procurement (industry vs. product/service). There is no official binding 1:1 crosswalk.
- PSC R425 — Engineering and Technical Services
Source: DoD DPCAP PSC Selection Tool (Ingested: 2026-06-29)
Related Resources & Compliance Guides
Further regulatory reference links for NAICS code 541330:
- Sector 54 Directory Hub — List of related industries in the Professional, Scientific, and Technical Services sector.
- SIC ↔ NAICS Crosswalk Tool — Look up mappings between legacy SIC codes and modern classifications.
- SBA Size Standards Guide — Complete rules and averaging periods for small business classifications.
- Calculating Annual Receipts Guide — Detailed worked example of revenue calculation rules.
- IRS Principal Business Activity Guide — How NAICS codes map to corporate and entity tax filings.
Related Industries in 5413
Frequently Asked Questions (FAQ)
Is 541330 a valid 2022 NAICS code?
NAICS 541330 is 'Engineering Services', a 2022 U.S. national industry under Sector 54 (Professional, Scientific, and Technical Services); the SBA small-business size standard is $25,500,000.
What is the SBA size standard for NAICS 541330?
The SBA small business size standard for NAICS 541330 is $25,500,000 (based on receipts).
What is the legacy SIC code mapping for 541330?
NAICS code 541330 maps to the legacy 1987 SIC codes: 8711 - Engineering Services, 8748 - Business Consulting Services, NEC.