The NAICS code for security guard is 561612, Security Guards and Patrol Services. Depending on the work, also check 561621.
Installing and monitoring alarm and security systems is 561621.
Also searched as: security guard services, security patrol.
Best match
Businesses primarily engaged in providing guard and patrol services, such as bodyguard, guard dog, and parking security services.
Census NAICS lines under 561612 that match security guard:
Businesses primarily engaged in (1) selling security alarm systems, such as burglar and fire alarms, along with installation, repair, or monitoring services or (2) remote monitoring of electronic security alarm systems.
All about NAICS 561621561612, Security Guards and Patrol Services. Businesses primarily engaged in providing guard and patrol services, such as bodyguard, guard dog, and parking security services.
Often, yes. Also check 561621 (Security Systems Services (except Locksmiths)). Installing and monitoring alarm and security systems is 561621. In SAM.gov you can list several NAICS codes and mark one as primary.
The one on the solicitation. Federal agencies assign one NAICS code to each solicitation, and the SBA size standard of that code decides whether you count as a small business for that bid.
Source: U.S. Census Bureau, 2022 NAICS (public domain). PublicBeam is independent and not affiliated with the Census Bureau or any agency. Always check the NAICS code in the official notice before you bid.