Private security companies operate in an environment where a routine assignment can quickly become a significant liability event. A guard may be injured while working, a client may allege property damage, or a security incident may result in a bodily injury claim. For California private patrol operators, insurance is also directly connected to licensing requirements. The insurance requirements for private security companies in California therefore deserve careful attention from both new and established security businesses. Understanding mandatory coverage, documentation requirements, and additional policies can help companies maintain compliance while protecting their employees, clients, and operations.