Diligence Security Group

Built on Discipline. Driven by Purpose.

Diligence Security Group was built on one principle: protection without compromise. A veteran-owned security company dedicated to protecting people, property, and operations across California. They bring military-trained precision to every assignment — with structured protocols, real-time communication, and a team that treats your security as seriously as their own. They provide professional security solutions for commercial properties, residential communities, corporate environments, events, and high-risk locations. Their services range across on-site officers and integrated technology solutions, delivering security strategies designed around each client’s specific risks, environment, and operational needs.

538 9th Street, Suite 210
Oakland, CA 94607
(844) 877-9975
Diligence Security Group

Business Hours
Open 24 Hours
Monday to Sunday