Federal NAICS Codes

NAICS 561621: Security Systems Services (except Locksmiths)

Explore obligations, trends, recent awards, and incumbent contractors for NAICS 561621.

NAICS 561621 federal market metrics

Total obligations
$39.1B
Total awards
58,062 awards
Active obligations
$1.5B
Size standard
$25,000,000 receipts

What this NAICS covers

NAICS 561621 covers installation, inspection, repair, and maintenance of electronic security systems including intrusion and fire alarm systems, access control, closed-circuit television, system testing, monitoring setup, and associated equipment services.

Federal opportunities under 561621 typically involve procuring and sustaining installed electronic security capability, including system installation, acceptance testing, preventative maintenance, monitoring integration, spare parts provisioning, training, and documentation that demonstrate operational readiness and lifecycle support.

FY2025 snapshot

Obligations
$537.4M
Awards
1,892
Average award
$284K
Change from FY2024
-20.6%

Recent awards

Search contractors

$23,968

Underwood Federal Solutions LLC

Departmental Offices

PIID
140D0426P0199
PSC
N063 - INSTALLATION OF EQUIPMENT- ALARM, SIGNAL, AND SECURITY DETECTION SYSTEMS

$4,700

VALCORP ENTERPRISES LLC

Department of Veterans Affairs

PIID
36C78626P50295
PSC
R430 - SUPPORT- PROFESSIONAL: PHYSICAL SECURITY AND BADGING

$19,171

HACKETT SECURITY, INC

National Park Service

PIID
140P6026P0031
PSC
H363 - INSPECTION- ALARM, SIGNAL, AND SECURITY DETECTION SYSTEMS

$249,994

VERSAR SECURITY SYSTEMS, LLC

US Marshals Service

PIID
15M10626FA47NSB06
PSC
6350 - MISCELLANEOUS ALARM, SIGNAL, AND SECURITY DETECTION SYSTEMS

$3,996

AMALGAMATED SERVICES, INC.

Federal Emergency Management Agency

PIID
70FBR526P00000011
PSC
J063 - MAINT/REPAIR/REBUILD OF EQUIPMENT- ALARM, SIGNAL, AND SECURITY DETECTION SYSTEMS

$124,850

SENTINEL SERVICES, LLC

Department of Veterans Affairs

PIID
36C25626N0603
PSC
J063 - MAINT/REPAIR/REBUILD OF EQUIPMENT- ALARM, SIGNAL, AND SECURITY DETECTION SYSTEMS

FAQ

What work fits NAICS 561621?
  • Integrate access-control readers, credential management, and door hardware into an existing security management system with centralized event logging.
  • Install and configure networked video surveillance systems with specified camera models, storage architectures, and retention schedules for forensic review.
  • Provide alarm monitoring services with verification workflows, alarm dispatch interface, and 24/7 monitoring operator coverage.
  • Deliver preventative maintenance, software patching, and firmware management for electronic security systems under multi-year service contracts.
When is NAICS 561621 a weak fit?
  • Locksmith services: work limited to mechanical lock fabrication, key cutting, and master key systems excludes electronic system integration, monitoring, and vendor-managed alarm services.
  • Security guard services: requirements focus on personnel-based patrol, access screening, or armed/unarmed guard duties that do not include electronic system installation, monitoring, or control systems work.
  • Electrical contracting and building wiring: scope requires licensed electrical construction, conduit, branch-circuit wiring, and permanent power distribution beyond equipment mounting and low-voltage security cabling.
What solicitation language points to NAICS 561621?
  • Line items list camera counts, access-control reader counts, control panel models, and manufacturer part numbers for procurement and installation.
  • Performance standards specify system uptime, event verification and response timelines, video retention periods, and interoperability with a monitoring center.
  • Labor categories call for certified security system technicians, alarm monitoring operators, and system integrators with vendor-specific product certifications.

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