Our Company

GTR Four Security specializes in providing high quality commercial and residential security services within the San Francisco Bay Area as well as some surrounding communities. We offer armed and unarmed security guard services, camera monitoring, private event services, and private patrol. We customize security packages to fit your needs. We are a private security company fully insured with a Private Patrol Operator (PPO) license issued by the California Bureau of Security and Investigative Services (BSIS). This license verifies that we meet state regulations for providing security services. Our founding members utilize over 30 years of combined knowledge and experience in the private security industry, military service, law enforcement, and customer service, to provide quality security services to the communities we serve.