Our Mission

Golden West Security exists to meet
the evolving security needs of the community.

We combine technology and physical security to provide our clients with the most effective solutions at the greatest value. For over fifty years we have served the community with a focus on Safety, Quality, Integrity, and Reliability.

Our Story

Golden West Security was established in 1969 to provide professional, quality security officers for commercial and residential customers. We have grown to be one of the largest security companies in the San Fernando Valley. Golden West Security excels in providing uniformed patrol officers and on-site guards. Today, Golden West Security is deploying the latest technologies to improve service and increase safety for customers as well as the entire community.

Our Officers

Golden West Security provides the highest level of security in Onsite Security Guards, Patrol Service, Alarm Response, and On-Call Response. Our officers receive extensive training and undergo thorough background checks. Furthermore, patrol officers and standing guards are managed by experienced Watch Commanders, who are on duty 24/7assurning our clients receive top quality service.

Our Command Center

Golden West is one of the only private security companies in Los Angeles County that operates 24-hour command center 7 days a week, 365 days a year. We manage all our business through a sophisticated information system platform which captures each of our patrol updates, whether that be sentry or vehicle patrol. This system includes the precise tracking of our vehicles and guards and is supplemented by video surveillance when available. This interconnected network allows us to respond quickly when we are contracted to provide alarms response and any security breach or suspicious activity observed by one of our officers. Speed of response and accuracy ae critical to be an effective private security company, and we take pride in the excellence of our performance.


Our management team is led by President David Mastromatteo who joined Golden West Security in April of 2023. David has several years of general management experience and comes from the Medical Device and Pharmaceutical industries. He has a strong background in quality management systems and strategy development.


Eric Alonzo is Golden West Security’s Field Account Manager


Jesse Stewart our Director of Operations Captain and Patrol Commander is an Air Force veteran with several years of private security experience. Jesse has extensive IT experience and a training background and works with our officers and clients on making sure our officers are performing their duties to client specifications.

Our Values


When it comes to safety, we are rigorous. Our highly trained officers follow all necessary protocols to ensure the safety of our clients, our employees, and the community.


We emphasize quality in everything we do. We have documented polices and procedures in place and audit ourselves against those standards. We analyze problems or shortfalls quickly to determine root causes, then take decisive corrective action. We believe in continuous improvement and strive to get better every day.


Because we value integrity, we always conduct business in an ethical and responsible and honest manner. We are accountable to our employees and clients and can be counted on to do the right thing.


As a commitment to reliability, we are here and ready to serve you 24/7/365 with live customer support.

Call us today at (818) 897-5965