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    1. Home
    2. /Gov Explore
    3. /NAICS Codes
    4. /561621

    NAICS Demand Lane

    Security Systems Services (except Locksmiths), Contract Opportunities

    6,277 total opportunities (6,277 active) tied to NAICS 561621 across federal, state, local, and forecast sources.
    NAICS 561621Federal + SLED6.3K total
    View NAICS definition →
    Total Opportunities
    6.3K
    Across all indexed sources
    Active Estimate
    6.3K
    Approximate active count
    Source Count
    3
    Federal, SLED, and forecast lanes

    Latest federal solicitations for NAICS 561621.

    DEPT OF DEFENSE

    INTEGRATED SECURITY SERVICES CONTRACT 5

    Active

    AI Summary

    The Department of Defense is soliciting integrated security services to provide system support, maintenance, repair, and logistics for security applications at multiple PFPA facilities. The contract will include task orders for hardware and installation of security systems. Questions are due by October 9, 2026.

    VA

    Posted Oct 5, 2026Due Oct 27, 2026SolicitationNAICS 561621Sol: HQ003426RE045
    View details→

    DEPT OF DEFENSE

    SECURITY GATES AND TURNSTILES

    Active

    AI Summary

    The Department of Defense is seeking a contractor for non-personnel services to provide maintenance and service for vehicle gates, barriers, and personnel turnstiles at Tobyhanna Army Depot. The contract includes technical upgrades and ongoing maintenance to ensure equipment is safe and operational, supporting the inst…

    PA

    Posted Oct 5, 2026Due Oct 12, 2026Sources SoughtNAICS 561621Sol: W51AA126QA100
    View details→

    DEPARTMENT OF ENERGY

    JOFOC – TECHNICAL SURVEILLANCE COUNTERMEASURES (TSCM) SERVICES – BRIDGE CONTRACT

    Archived

    AI Summary

    This opportunity is a bridge contract for technical surveillance countermeasures services, including training, administrative, analytical, inspection, and equipment support for the Department of Energy. The work focuses on communications security, tempest, protected distribution systems, and wireless security.

    DC

    Posted Oct 5, 2026JustificationNAICS 561621Sol: 89303026CAU000031
    View details→

    DEPT OF DEFENSE

    ADVANCED PROGRAMS-OMN-SECURITY SYSTEM MAINTENANCE

    Active

    AI Summary

    This opportunity involves the service, repair, and maintenance of the Access Control System and Intrusion Detection System at NAWCTSD in Orlando, FL. Contractors will perform preventative maintenance and semi-annual inspections. Interested bidders should refer to the attached PWS for detailed requirements.

    FL

    Posted Oct 5, 2026Due Oct 16, 2026PresolicitationNAICS 561621Sol: N61340-27-RFI-0177
    View details→

    DEPT OF DEFENSE

    DRAFT RFP - GLOBAL UNIFIED AIRBASE READINESS AND DEFENSE (GUARD) IDIQ - FORCE PROTECTION DIVISION

    Active

    AI Summary

    The Department of Defense is issuing a Draft RFP for the Global Unified Airbase Readiness and Defense (GUARD) IDIQ, focusing on Integrated Base Defense Security Systems. This RFI aims to engage industry for better understanding and planning of the acquisition strategy. Responses are for informational purposes only and …

    UT

    Posted Oct 5, 2026Due Oct 14, 2026PresolicitationNAICS 561621Partial Small Business Set-Aside (FAR 19.5)Sol: FA2381999
    View details→

    DEPARTMENT OF JUSTICE

    FIRE ALARM EQUIPMENT REPLACEMENT AT FCI ALLENWOOD

    Archived

    AI Summary

    The opportunity involves the replacement of fire alarm equipment at FCI Allenwood, managed by the Department of Justice's Bureau of Prisons. Bidders should be prepared to provide high-quality fire alarm systems suitable for correctional facilities.

    TX

    Posted Oct 1, 2026JustificationNAICS 561621Sol: 15BBNF26C20100003
    View details→

    DEPT OF DEFENSE

    LENEL ONGUARD SYSTEM WITH LENELS2 PHYSICAL SECURITY SOLUTIONS

    Active

    AI Summary

    The Naval Surface Warfare Center Carderock Division intends to solicit for a Lenel OnGuard system with LenelS2 physical security solutions. This opportunity is a special notice under Simplified Acquisition Procedures, and quotes are requested directly from suppliers. A written solicitation will not be issued, and the a…

    MD

    Posted Oct 1, 2026Due Oct 12, 2026Special NoticeNAICS 561621Sol: 1301398064
    View details→

    DEPT OF DEFENSE

    AMENDMENT 0003 LENEL ONGUARD DOOR ACCESS CONTROL SYSTEM UPGRADE

    Active

    AI Summary

    This amendment to the Combined Synopsis/Solicitation informs potential Offerors that the solicitation for the Lenel OnGuard door access control system upgrade remains valid. The Department of War is re-evaluating its procurement approach, which may lead to an amendment or cancellation of the solicitation.

    KS

    Posted Oct 1, 2026Due Oct 23, 2026Combined Synopsis/SolicitationNAICS 561621Total Small Business Set-Aside (FAR 19.5)Sol: W911RX26QA050
    View details→

    DEPARTMENT OF VETERANS AFFAIRS

    H312--FIRE ALARM MAINTENANCE SERVICE CONTRACT FY27 - NEW BASE + FOUR - 583

    Active

    AI Summary

    The Department of Veterans Affairs is soliciting quotes for a fire alarm maintenance service contract for FY27, including a new base and four options. A site visit is scheduled for October 7, 2026, and quotes are due by October 21, 2026. Interested parties should submit RFIs by October 14, 2026.

    OH

    Posted Oct 1, 2026Due Oct 21, 2026SolicitationNAICS 561621Service-Disabled Veteran-Owned Small Business (SDVOSB) Set-Aside (FAR 19.14)Sol: 36C25027Q0009
    View details→

    DEPT OF DEFENSE

    INSPECTION OF FIRE EXTINGUISHERS AND SUPPRESSION SYSTEMS FOR AMXG AT HILL AFB, UTAH

    Active

    AI Summary

    This opportunity involves the inspection and maintenance of fire extinguishers and fire suppression systems at Hill AFB, Utah. The solicitation is a request for quotation (RFQ) and is set aside for small businesses. Contractors must have valid licenses from the Utah State Fire Marshal and be registered in SAM.gov. Quot…

    UT

    Posted Sep 30, 2026Due Oct 30, 2026Combined Synopsis/SolicitationNAICS 561621Total Small Business Set-Aside (FAR 19.5)Sol: FA822427Q0001
    View details→

    Source mix

    How this NAICS code is represented across indexed contract sources.

    federal
    4,466
    sled
    1,777
    forecast
    34

    Related NAICS Codes

    • 56, Administrative and Support and Waste Management and Remediation Services→
    • 561, Administrative and Support Services→
    • 5611, Office Administrative Services→
    • 56111, Office Administrative Services→
    • 561110, Office Administrative Services→
    • 5612, Facilities Support Services→
    • 56121, Facilities Support Services→
    • 561210, Facilities Support Services→
    • 5613, Employment Services→
    • 56131, Employment Placement Agencies and Executive Search Services→

    Explore

    • 561621 Definition→
    • Browse NAICS Codes→
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    About NAICS 561621

    This industry comprises establishments primarily engaged in providing security systems services, such as installing, monitoring, and maintaining security and fire alarm systems, excluding locksmith services. These services help protect properties and assets through electronic security measures.

    Read the full NAICS definition →