Security System Services

NAICS 561621
Security System Services

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Industry Summary

The 5,670 security systems service providers in the US design, sell, install, service, and monitor security alarm systems. Companies may install stand-alone systems or offer monitoring services. Customers include residential, commercial, educational, governmental, and industrial accounts.

Customer Attrition

Failure to retain customers is costly, as companies typically incur acquisition expenses and depend on payments over the term of a contract to recoup costs.

Technology Integration

Advances in technology help drive popularity for integrated security systems that combine multiple features, such as video surveillance, intruder detection, alarm systems, and home control.


Recent Developments

Jul 29, 2026 - Commercial Retrofits Driving a New Wave of Security Spending
  • The next growth cycle in commercial security is coming from upgrades rather than new construction. Instead of replacing entire alarm, access control, and video surveillance systems, businesses are increasingly retrofitting existing installations with cloud-connected controllers, communication modules, and software that extend the life of legacy hardware. The Security Industry Association says integrators are entering a "pivotal upgrade cycle" as customers modernize intrusion, video, access control, and life-safety systems without the expense of rip-and-replace projects. The opportunity is significant because millions of commercial buildings already have security infrastructure in place, and many owners are looking to add remote management and unified security platforms while minimizing disruption. The broader commercial security systems market is projected to grow from about $320 billion in 2026 to nearly $462 billion by 2030, according to Research and Markets, with retrofit-friendly cloud technologies helping fuel that expansion.
  • AI and cloud-based monitoring technologies are rapidly transforming the security and alarm system industry, with providers increasingly deploying AI-powered video analytics, smart sensors, remote monitoring, and predictive threat detection systems to improve response times and reduce false alarms. Industry reports show the market is shifting away from traditional standalone alarm systems toward integrated, connected security ecosystems that combine cameras, access control, mobile apps, and real-time analytics. Growing concerns about property crime, cybersecurity threats, and demand for smarter home and business automation are accelerating adoption nationwide. Companies are also expanding the use of cloud-managed platforms and subscription-based monitoring services to create recurring revenue streams and improve customer retention. Analysts warn that alarm providers slow to adopt AI and integrated smart technologies risk losing market share in an increasingly technology-driven industry.
  • Package theft has emerged as one of the most widespread property crimes in the US, with approximately 31% of Americans reporting victimization, a rate that exceeds many violent crimes in frequency. An estimated 104 million packages were stolen last year, representing a $37 billion annual loss affecting roughly one in four households, according to recent consumer research. Losses concentrate heavily at year's end, with nearly 57% of thefts occurring in November and December, when the average adult receives an estimated 25 packages over a three-month period - twice the normal volume. Multifamily residents bear a disproportionate share of the burden, facing more than three times the theft risk of single-family homeowners. Perhaps most telling: despite 46% of consumers now owning a delivery-monitoring camera, nearly a quarter of theft victims already had one installed at the time of the incident, exposing a significant gap between surveillance and deterrence.
  • A new NerdWallet survey reveals that just over half of Americans (57%) have a home security system, and those who do say that it gives them peace of mind - 88% feel safer, and 85% call a “good” system essential. But it’s not all glowing: 28% of system owners regret the purchase. For the 43% of people without a system, cost is a major roadblock (33%) and many simply don’t think they need one (35%). Those who opt for professional monitoring cite fast emergency response (36%) and lower insurance premiums (23%), whereas DIY system users prioritize saving money (35%) and maintaining privacy (32%). At the same time, most homeowners (61%) only fix systems when they break, neglecting preventative maintenance. The NerdWallet survey of 2,000 US adults paints a picture of high demand in the market, but one where price sensitivity and mixed motivations leave room for more tailored offerings.

Industry Revenue

Security System Services

Security System Services — revenue distribution by firm size chart

Industry Structure

Industry size & Structure

The average security systems services provider operates out of a single location, employs 21 workers, and generates $5.1 million annually.

  • The security systems services industry consists of about 5,760 firms that employ about 125,870 workers and generate about $29.6 billion annually.
  • The industry is concentrated at the top and fragmented at the bottom. The top four firms account for 34% of industry revenue. The top 50 firms account for 58% of industry revenue.
  • Large companies include Apollo Global (ADT) and Monitronics (Brinks Home Security). Large companies may be vertically-integrated and have international operations.
  • Estimated US household penetration of alarm systems is about 57%.
  • The industry includes national and regional chains, franchises, and independent operators.

Industry Forecast

Industry Forecast
Security System Services Industry Growth
Security System Services — industry growth forecast chart
Source: Vertical IQ and Inforum

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