NAICS Code for Environmental Consulting
The NAICS code for environmental consulting is 541620, Environmental Consulting Services. Environmental consulting, including site remediation consulting, ecological restoration and wetland restoration planning, falls under 541620, Environmental Consulting Services. Environmental engineering is listed under 541330, and doing the cleanup is 562910. Many environmental firms register all three.
Related codes to add
Most businesses list several NAICS codes. Use 541620 as your primary if it covers most of your revenue, and add these when they describe work you also do:
| Code | Use it when | Size standard |
|---|---|---|
| 541330 Engineering Services | You perform environmental engineering design. | $25.5 million or less in receipts |
| 562910 Remediation Services | You do the remediation work yourself. | $25 million or less in receipts |
| 541380 Testing Laboratories and Services | You run a lab that tests environmental samples. | $19 million or less in receipts |
| 541690 Other Scientific and Technical Consulting Services | You consult on biology, hydrology or other sciences. | $19 million or less in receipts |
How to choose
Your primary NAICS code should match the work that brings in most of your revenue, and it sets which size standard applies to you for most set-aside contracts. Read each code's Census definition before you register. Our guide on how to choose NAICS codes covers the trade-offs. To see whether you count as small under these codes, try the size standard checker.
Frequently asked questions
What is the NAICS code for environmental consulting?
The NAICS code for environmental consulting is 541620, Environmental Consulting Services. Environmental consulting, including site remediation consulting, ecological restoration and wetland restoration planning, falls under 541620, Environmental Consulting Services. Environmental engineering is listed under 541330, and doing the cleanup is 562910. Many environmental firms register all three.
What is the SBA size standard for NAICS 541620?
A business counts as small under NAICS 541620 with $19 million or less in average annual receipts, under the SBA's table of size standards. Federal contracts set aside for small businesses under this code are limited to firms that meet it.
Can I list more than one NAICS code?
Yes. In your SAM.gov registration you pick one primary NAICS code and can add as many others as describe work you can actually do. Add every code below that fits, because agencies search and set aside contracts by code.