Complete guide to physical security
A practical approach to assessing physical security, from evaluating access points and camera coverage to reviewing incident response procedures.
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Security that works for the people who depend on it
One partner. One end-to-end security solution.
Protecting over 1 billion square feet globally
The world's most trusted organizations traded juggling vendors for consistency, predictability, and ROI from one provider.
About Kastle
For over 50 years, Kastle has helped secure the places where people live, work, learn, and gather. Today, Kastle is the only end-to-end managed physical security provider that combines advanced technology, 24/7 monitoring, and expertise to make properties safer, smarter, and easier to manage.
Kastle owns the entire security lifecycle. We design, install, monitor, maintain, and support our solutions from the first blueprint through incident resolution and ongoing service. One partner. One contract. One call.
The result is security that does more than protect. It helps organizations operate with greater visibility, efficiency, and confidence.
Our story
Founded in Falls Church, Virginia, in 1972, Kastle entered the market with a unique approach to physical security. Beyond providing equipment, we built a managed service model designed to support customers long after installation.
This approach still defines Kastle today.
Throughout the decades, our solutions have expanded to include access control, video security, 24/7 remote monitoring, visitor management, intercoms, mobile credentials, and AI-powered analytics. Today, Kastle has a presence at thousands of properties and enterprises in the U.S. and Australia.
While our capabilities have grown, our mission remains the same. Kastle delivers security as a service and owns its performance long-term.
Our approach
Managing physical security is complex. Technology, installation, monitoring, maintenance, software, and service are often spread across multiple vendors, leaving internal teams in a constant coordination loop.
Kastle brings it all together under one reliable partner.
Our customers have one relationship and one team responsible for keeping their security program operating as needed – from system design and installation to monitoring, maintenance, upgrades, and ongoing support.
We’re also flexible and open by design. Kastle solutions integrate seamlessly with your existing infrastructure, including third-party software and hardware from other security manufacturers. So, you can add Kastle and keep your current investment.
What we do
Kastle combines physical security technology, managed services, and operational intelligence to help organizations protect people and property while making better use of their spaces.
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Access control: Cloud-based access control, mobile credentials, and flexible permissions that let people move freely and securely around your property.
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Video security: Cloud-connected video surveillance, intelligent search, and remote monitoring to help teams detect, investigate, and respond to events faster.
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24/7 monitoring: Around-the-clock monitoring by trained professionals who respond according to established protocols.
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Visitor management: Digital visitor management that streamlines check-in for guests, contractors, vendors, and deliveries while maintaining control over who enters the property.
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Intercoms: Connected intercom solutions that simplify visitor entry and work with your broader security system.
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AI & analytics: Security and occupancy intelligence that helps teams identify building trends to inform staffing decisions, spatial planning, and operations.
Security built around your environment
Kastle security solutions are trusted by organizations across commercial real estate, enterprise, education, manufacturing, law firms, government, senior living, student housing, stadiums and venues, and other complex environments.
Behind every Kastle deployment is a dedicated team that keeps it working as intended. With installation and service teams in major markets across the United States, Kastle combines local expertise with national reach.
We monitor the systems 24/7, install and service equipment, and help clients navigate changing needs over time. That’s the Kastle difference.
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