Security Design System

Founded in 1956 by retired police chief Sam Post, Post Alarm has been a trusted name in Southern California for home security and commercial security for three generations. With an approach that blends local expertise with leading technology, we deliver best-in-class security solutions including burglar alarm monitoring, video surveillance, live video monitoring, patrol and armed response services, fire alarm monitoring, and more. We pride ourselves on delivering customized security solutions, professional installation and service, and exceptional customer service. Contact us to experience the difference that nearly 70 years of security company expertise can make for you peace of mind. Trust Post Alarm to protect what matters most to you.