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NAICS code lookup
The complete official 2022 dictionary — all 1,012 six-digit NAICS codes. Open any code for its pricing, market, competitors, and live opportunities.
561621Facilities & Support
Security Systems Services (except Locksmiths)
Installation, repair, and monitoring of electronic security alarm systems — including access control, intrusion detection, and CCTV. Used for federal facility security technology contracts and integrated electronic security work.
Typical value
$250K – $25M per award
Common set-asides
Small Business, 8(a), HUBZone, SDVOSB
Top buyers
Department of Homeland Security · GSA · Department of Defense · Department of Veterans Affairs · Department of State (OBO)
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