What NAICS codes should a janitorial company register under to bid on government contracts?

Short answer: The primary NAICS code for janitorial work is 561720 (Janitorial Services). Related codes are 561210 (Facilities Support Services), 561790 (Other Services to Buildings and Dwellings), 561740 (Carpet and Upholstery Cleaning) and 562111 (Solid Waste Collection). List every code you can truthfully perform in SAM.gov, because agencies search by NAICS.

Why the code matters

The NAICS code on a solicitation sets the SBA size standard that decides whether you qualify as a small business for that job. Your SAM.gov registration lists the codes you perform, and contracting officers and tools filter on them. XL Eagle's NAICS lookup shows each code with its size standard and open contracts.

Check the exact page

See NAICS 561720 Janitorial Services for the current size standard and open jobs, and the janitorial contracts guide.

Sources

• Census NAICS
• SBA size standards

XL Eagle LLC (UEI K6SYWSWZAMY9, CAGE 11R42) is an SBA small business and federal prime contractor in Austin, Texas, with 48 federal awards totalling $2.3 million, all public record on USAspending.gov. Updated 2026-11-12. More answers