A Proprietary Private Security Officer, sometimes shortened to PSO, is a security employee hired directly by the business or property owner rather than through a contracted patrol company. California requires these individuals to register with BSIS in a manner similar to contract guards, including background checks and, in many cases, comparable training requirements.
Some larger Sacramento-area apartment portfolios, hospitals, or commercial campuses maintain their own in-house security staff rather than contracting the function out, making proprietary registration directly relevant to how they staff and manage compliance internally rather than relying on a vendor's licensing.
The core public-safety and training expectations largely mirror those for contract guards, since the underlying job duties and liability risks are similar regardless of who technically employs the officer. Property owners choosing the proprietary model take on the compliance responsibilities that would otherwise sit with a contracted PPO.
Understanding this distinction helps clarify why some in-house officers carry a different registration category than the guards seen on contract patrol vehicles, even though their day-to-day duties may look identical to a resident or tenant.
Related entries
Official sources
- [1]Business and Professions Code § 7574 et seq.California Legislative Information
Links point to the publishing agency or the California Legislative Information text. Government pages are reorganized periodically — if a link moves, search the code section or agency name at the official site.
General industry and regulatory usage — not legal advice, and not an endorsement by BSIS, the Department of Consumer Affairs, or any law-enforcement agency. Statutes, regulations, and local ordinances change; verify current text at the official government source or with your attorney.