NAICS 561621 – Security Systems Services (except Locksmiths)

Browse 268+ active federal contract opportunities classified under NAICS 561621.

Recent Opportunities

• Fire Station Alerting and Alarm (FSAA) System
  Agency: DEPT OF DEFENSE Posted: May 20, 2026 Due: Jun 30, 2026 NAICS: 561621 Set-Aside: NONE Location: JP-47
• Access Control System
  Agency: DEPT OF DEFENSE Posted: May 20, 2026 Due: May 22, 2026 NAICS: 561621 Set-Aside: SBA Location: OK
• Base Alarm Services - Los Angeles Air Force Base
  Agency: DEPT OF DEFENSE Posted: May 20, 2026 Due: Jun 5, 2026 NAICS: 561621 Set-Aside: SBA Location: CA
• SLBE - Alarm Monitoring and Annual Inspections
  Agency: INTERIOR, DEPARTMENT OF THE Posted: May 20, 2026 Due: Jun 19, 2026 NAICS: 561621 Set-Aside: SBA Location: MI
• Access Control Systems (ACS) Door Maintenance
  Agency: DEPT OF DEFENSE Posted: May 20, 2026 Due: Jun 5, 2026 NAICS: 561621 Set-Aside: NONE Location: OH
• J063--Fire Alarm Service | Base 4
  Agency: VETERANS AFFAIRS, DEPARTMENT OF Posted: May 20, 2026 Due: Jun 3, 2026 NAICS: 561621 Location: NY
• Integrated Base Defense Establishment of a Closed Restricted Network to Support the Electronic Security System
  Agency: DEPT OF DEFENSE Posted: May 20, 2026 Due: Jun 16, 2026 NAICS: 561621 Set-Aside: SBA
• Fire Station Alerting and Alarm (FSAA) System
  Agency: DEPT OF DEFENSE Posted: May 20, 2026 Due: Jun 30, 2026 NAICS: 561621 Set-Aside: NONE Location: JP-47
• H--Fire Door Inspections for Seba Dalkai Boarding Sch
  Agency: INTERIOR, DEPARTMENT OF THE Posted: May 20, 2026 Due: May 26, 2026 NAICS: 561621 Set-Aside: ISBEE
• Fire Station Alerting and Alarm (FSAA) System
  Agency: DEPT OF DEFENSE Posted: May 20, 2026 Due: Jun 30, 2026 NAICS: 561621 Set-Aside: NONE Location: JP-47
• CCTV Monitoring System
  Agency: DEPT OF DEFENSE Posted: May 20, 2026 Due: May 27, 2026 NAICS: 561621 Set-Aside: SBA Location: RI
• Access Control Systems (ACS) Door Maintenance
  Agency: DEPT OF DEFENSE Posted: May 20, 2026 Due: Jun 5, 2026 NAICS: 561621 Set-Aside: NONE Location: OH
• MSHA - Security System Inspections-Mx
  Agency: LABOR, DEPARTMENT OF Posted: May 20, 2026 NAICS: 561621 Set-Aside: NONE Location: WV
• H--Annual Testing of Fire Systems Carlsbad Caverns NM
  Agency: INTERIOR, DEPARTMENT OF THE Posted: May 19, 2026 Due: May 25, 2026 NAICS: 561621 Set-Aside: SBA
• Installation Base Defense Security System (IBDSS) Maintenance (Intent to Sole Source)
  Agency: DEPT OF DEFENSE Posted: May 19, 2026 Due: May 26, 2026 NAICS: 561621 Set-Aside: NONE Location: ND
• Access Control Systems (ACS) Door Maintenance
  Agency: DEPT OF DEFENSE Posted: May 19, 2026 Due: May 28, 2026 NAICS: 561621 Set-Aside: NONE Location: OH
• Installation and Maintenance of Electronic Security Systems
  Agency: DEPT OF DEFENSE Posted: May 19, 2026 Due: Jun 3, 2026 NAICS: 561621 Set-Aside: NONE Location: MD
• Base Alarm Services - Los Angeles Air Force Base
  Agency: DEPT OF DEFENSE Posted: May 19, 2026 Due: Jun 5, 2026 NAICS: 561621 Set-Aside: SBA Location: CA
• COMMANDER, NAVY REGION HAWAII REQUEST FOR INFORMATION (RFI) / SOURCES SOUGHT NOTICE LENEL ONGUARD ENTERPRISE SOFTWARE UPGRADE AND SUPPORT SERVICES
  Agency: DEPT OF DEFENSE Posted: May 19, 2026 Due: Jun 3, 2026 NAICS: 561621 Location: HI
• ROBERT S. KERR MARINE TERMINAL - INSPECTION AND CERTIFICATION OF FIRE SUPPRESSION SYSTEM
  Agency: DEPT OF DEFENSE Posted: May 19, 2026 Due: May 22, 2026 NAICS: 561621 Set-Aside: SBA
• RFID DOOR LOCKS
  Agency: DEPT OF DEFENSE Posted: May 18, 2026 Due: May 19, 2026 NAICS: 561621 Set-Aside: SBA Location: WA
• 33 RQS/RGS ARMAG IDS Install
  Agency: DEPT OF DEFENSE Posted: May 18, 2026 Due: Jun 19, 2026 NAICS: 561621 Set-Aside: NONE Location: JP-47
• BNSF Railway Surveillance System
  Agency: DEPT OF DEFENSE Posted: May 18, 2026 Due: Jun 8, 2026 NAICS: 561621 Set-Aside: SBA Location: WY
• 7 MUNS Vindicator
  Agency: DEPT OF DEFENSE Posted: May 18, 2026 Due: May 20, 2026 NAICS: 561621 Set-Aside: SBA Location: TX
• Access Control Systems (ACS) Door Maintenance
  Agency: DEPT OF DEFENSE Posted: May 18, 2026 Due: May 28, 2026 NAICS: 561621 Set-Aside: NONE Location: OH

Data sourced from SAM.gov. Updated daily. Last updated: May 21, 2026.