Record Flag

NAICS 561621 contract opportunities

Security Systems Services (except Locksmiths)

19 open federal contract opportunities in NAICS 561621 right now, soonest deadline first: solicitations, presolicitations and sources-sought notices still taking responses. Each one links to the notice on SAM.gov.

Open solicitations

Nov 6, 12:00 PM UTC-6in 24 days

Electronic Security Systems

DEPT OF DEFENSE > DEPT OF THE ARMY · NAICS 561621 · PSC J063

Small Business Set Aside - TotalCombined Synopsis/SolicitationCrane, IN

View on SAM.gov → · Solicitation W519TC-27-Q-SEC1 · Posted Oct 7, 2026

Jan 13, 12:00 PM UTC-5in 92 days

Fire Alarm BPA Fort Drum NY

DEPT OF DEFENSE > DEPT OF THE ARMY · NAICS 561621 · PSC J012

Small Business Set Aside - TotalPresolicitationFort Drum, NY

View on SAM.gov → · Solicitation W911S2-22-U-FIRE · Posted Jan 14, 2022

No deadline listed

Electronic Ramp Gate PM

DEPT OF DEFENSE > DEPT OF THE AIR FORCE · NAICS 561621 · PSC J059

Small Business Set Aside - TotalPresolicitationTinker AFB, OK

View on SAM.gov → · Solicitation FA812526Q0087 · Posted Sep 18, 2026

Filter these in the open solicitations feed. Deadlines are shown in the notice's own time zone.

Recent awards

112 contract awards in NAICS 561621 signed in the last 90 days, worth $53.6M in total. See who won them.

From USAspending.gov and SAM.gov award notices. USAspending publishes Defense awards about 90 days after signing.

What NAICS 561621 covers

Installing, monitoring and servicing alarm and security systems. Official title: Security Systems Services (except Locksmiths). It is part of the Administrative and Support and Waste Management and Remediation Services sector.

Every federal solicitation names one NAICS code for the work. The code's small-business size standard decides who counts as small for that bid, and your SAM.gov registration lists the codes your company works in.

Open bids by state

By place of performance; notices that name none count under the contracting office's state.

Related codes