# NAICS 541990: All Other Professional, Scientific, and Technical Services

Breadcrumb: [NAICS codes](https://bidrover.com/naics) › [541990 All Other Professional, Scientific, and Technical Services](https://bidrover.com/naics/541990)

This industry comprises establishments primarily engaged in the provision of professional, scientific, or technical services (except legal services; accounting, tax preparation, bookkeeping, and related services; architectural, engineering, and related services; specialized design services; computer systems design and related services; management, scientific, and technical consulting services; scientific research…

- NAICS code: 541990
- Title: All Other Professional, Scientific, and Technical Services
- Sector: 54 Professional, Scientific, and Technical Services
- Subsector: 541 Professional, Scientific, and Technical Services
- Industry group: 5419 Other Professional, Scientific, and Technical Services
- SBA size standard: $19.5 million average annual receipts
- Open bids on BidRover: 1
- Updated: Oct 23, 2026

## Open bids (1)

- [DETROIT JCC-2026-40 BACKFLOW PREVENTER TESTING, MAINTENANCE & INSPECTION](https://bidrover.com/bids/detroit-jcc-2026-40-backflow-preventer-testing-maintenance-and-inspection--2a5ed151-d815-4058-8590-b2152bbf07f4) — Construction & facilities · Michigan, United States · due 2027-05-31

## Frequently asked questions

### What is NAICS code 541990?

NAICS 541990 is "All Other Professional, Scientific, and Technical Services" in the 2022 North American Industry Classification System, in sector 54 (Professional, Scientific, and Technical Services). This industry comprises establishments primarily engaged in the provision of professional, scientific, or technical services (except legal services; accounting, tax preparation, bookkeeping, and related services; architectural, engineering, and related services; specialized design services; computer systems design and related services; management, scientific, and technical consulting services; scientific research…

### What is the SBA size standard for NAICS 541990?

A business is small under NAICS 541990 at or below $19.5 million average annual receipts, including affiliates (13 CFR 121.201). Confirm the standard named in each solicitation.

### How many government bids are open under NAICS 541990?

BidRover counts 1 open bid that cite NAICS 541990 as of Oct 23, 2026, refreshed every hour from official public sources. Many state and local notices do not list a NAICS code, so search by keyword too.

### How do I get alerts for NAICS 541990 bids?

Save an alert on this page. A free account gets new matching bids by weekly email; the Team plan ($19/mo) sends daily alerts with match scores, the buyer, source link and documents.

## Related NAICS codes

- [541910 Marketing Research and Public Opinion Polling](https://bidrover.com/naics/541910)
- [541930 Translation and Interpretation Services](https://bidrover.com/naics/541930)
- [541940 Veterinary Services](https://bidrover.com/naics/541940)
- [531320 Offices of Real Estate Appraisers](https://bidrover.com/naics/531320)
- [541921 Photography Studios, Portrait](https://bidrover.com/naics/541921)
- [541922 Commercial Photography](https://bidrover.com/naics/541922)

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Code titles and definitions: U.S. Census Bureau, North American Industry Classification System (NAICS), 2022 (https://www.census.gov/naics/). Size standards: U.S. Small Business Administration, Small Business Size Standards, 13 CFR 121.201, eCFR text current as of 2026-10-21 (https://www.ecfr.gov/current/title-13/section-121.201).

BidRover lists bids from official public sources. It is not an issuing authority; confirm the NAICS code and size standard named in each solicitation.