Kastle, your Premier Managed Security Provider in
Seattle, WA

855.527.8531

​​​Kastle is a premier managed security service company in Seattle, WA. Leading the security industry since 1972, we provide state-of-the-art security solutions for clients across Seattle, the nation, and the world protecting more than 2 million people across 10,000+ locations globally.

Our Seattle security experts offer a suite of integrated solutions including access control, video surveillance, visitor management and identity management, as well as mobile security applications – all integrated on an open, standards-based platform and supported by a team of experts 24x7x365.

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Address
1201 Second Ave.
Suite 900
Seattle, WA 98101

Business Hours
Monday-Friday: 8am-6pm
Saturday-Sunday: Closed

Monitoring Center
Monday-Sunday 24/7

Kastle’s Seattle office is located in downtown Seattle’s central business district with convenient access to major transportation routes including Interstate 5, Interstate 90, and State Route 99. This central location provides efficient connectivity to the waterfront, South Lake Union, and surrounding communities across the greater Seattle metropolitan area.

Directions from
Seattle-Tacoma International Airport (SEA)

  • Take I-5 North toward Seattle.
  • Continue for approximately 14 miles toward downtown.
  • Take Exit 165B for Seneca Street.
  • Continue toward 2nd Avenue. Kastle’s office will be nearby.

Directions from
Bellevue, WA:

  • Take I-90 West toward Seattle.
  • Continue across Lake Washington into downtown Seattle.
  • Take the exit toward Madison Street / Convention Place.
  • Continue toward 2nd Avenue. Kastle’s office will be nearby.

Directions from
From Tacoma, WA:

    • Take I-5 North toward Seattle.
    • Continue toward downtown Seattle.
    • Take Exit 165B for Seneca Street.
    • Continue toward 2nd Avenue. Kastle’s office will be nearby.

 

Cities and communities served: Seattle, Bellevue, Redmond, Kirkland, Renton, Tacoma, Everett, Lynnwood, Kent, and surrounding communities across the greater Seattle metropolitan area.

Kastle supports a broad range of properties across Seattle, including Class A office buildings, multi-tenant campuses, mixed-use developments, residential high-rises, and government or civic facilities. Our solutions are designed for both new construction and existing buildings looking to modernize their security.
In Seattle, Kastle provides enterprise-grade access control solutions that include cloud-based access management, mobile credentials for smartphones and wearables, key fob systems, and tailored visitor management. Kastle’s access control solutions are scalable, supporting everything from single buildings to large multi-site portfolios while maintaining high levels of security and operational efficiency.
Access control ensures only authorized individuals can enter specific areas while providing real-time activity tracking for better visibility and investigations. It reduces risks like unauthorized entry and supports emergency response measures such as lockdowns and controlled access during incidents.
Kastle provides AI-enabled video surveillance systems with IP cameras, cloud and edge recording, and centralized video management. These systems integrate with access control and analytics to give property teams clearer visibility and faster response to events.
Yes, Kastle offers professional monitoring services in Seattle supported by trained security operations teams. Monitoring options include 24/7 alert monitoring and escalation, real-time incident notifications, and AI-driven event filtering to reduce false alarms.
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How can I get started with Kastle in Seattle?

Getting started is simple:

  1. Contact our security specialists by calling 855.527.8531 or filling out this form.
  2. We’ll schedule a site consultation and security assessment.
  3. You’ll receive a custom proposal aligned to your goals, budget, and timeline.
  4. Deployment and onboarding are coordinated to minimize disruption.
  5. Ongoing support and performance reviews help you optimize your security program.