Our highly trained team will custom design, install and support a full range of Security, Video, Access and Fire solutions to meet your specific needs.  Whether you own a small retail store or manage multiple businesses across SOCAL, from Los Angeles to Orange County, our experts have you covered.  

Welcome to a new generation of home security & smart home automation. Residents throughout Los Angeles & Orange Counties have been protected by our local alarm company for over 60 years.

Post Alarm owns and operates it’s own UL Listed, CSAA 5 Diamond Central Station to provide personalized services and deliver an authentic unified solution to homes & businesses throughout Southern California.

Post Alarm’s highly trained Armed Patrol and Alarm Response Officers put you first and get help there quickly, often eliminating false alarm fines, and alerting the police when a real need arises.

Owned and operated by the Post Family for over 60 years, we have become one of the largest, most respected full-service security companies in Southern California.