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Company History

Platt Security was founded by Robert “Bob” Platt in 1958. Bob was a Police Sergeant for the City of Long Beach assigned to the Vice Division. The Chief of Police asked if he could handle security for public events held at the old Long Beach Municipal Auditorium. Bob put together a group of off duty police officers to work concerts, roller derbies and other public events, and Platt Security was born. In 1962, the Long Beach Arena was opened, and Platt Security began providing security for major sporting events, concerts, and trade shows.

In the early seventies, Marc Platt joined his father at Platt Security. Following in his father’s footsteps, Marc began a career with the Long Beach Police Department in 1975, working assignments in both patrol and detectives. He continued working part time at Platt until 1992 when he retired from the police department and took on a full-time position assisting his father with the management of Platt Security.

In the mid-seventies, a convention center was added to the Long Beach Arena and Platt Security was contracted to handle all security for the facility. The Long Beach Convention Center was home to major concerts for Elvis Presley, Frank Sinatra, the Rolling Stones, and The Grateful Dead to name a few.

In 1975, Platt Security, Inc. entered a contract with the Long Beach Grand Prix to provide security for the race. Platt Security provided the security for the Grand Prix for the next ten years. Marc Platt is the current Director of Security for the Long Beach Grand Prix. Marc’s expertise in race security has made him a much sought-after consultant for events of this type. He has designed and implemented security programs for over eighty races in the United States and Canada.

In 1992, Platt Investigations, Inc. was established. Licensed by the State of California, Platt Investigations is a full-service Investigation firm providing services to attorneys, corporations, and individuals with a wide range of investigators specializing in all areas of investigations. Our investigators are former, or currently employed, law enforcement officers with experience in all areas of criminal and civil investigations. We maintain an extensive network of information sources along with skilled researchers which, coupled with tenacious and skilled investigators, enables us to succeed where others fail.

In 1996, we added Platt Security Systems, Inc., a full-service alarm, video, and access control company. We wanted to offer our customers a complete security package allowing one of our companies to be able to handle all their security and investigative needs. To date we have over five hundred alarm customers and have installed hundreds of video surveillance and access control systems.

Platt has developed, and strives to maintain, a great working relationship with law enforcement agencies in the areas we work. The information exchange between the police and Platt personnel have proven to be beneficial to all parties. Law enforcement agencies have realized that a working relationship with our professionally trained personnel is as valuable to them as it is to us.

Most recently Platt Security, Inc. was acquired by Allied Universal Security Services and has taken over all the security guard services. Platt Security Systems and Investigations will continue to provide services as normal.

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Contact Information

Platt Security Systems, Inc.

3275 East Grant St.
Signal Hill, CA 90755
Phone: (562) 986-9800

Location Map

California License Numbers

ACO 3639
PI 16004