ABOUT CASTELLAN

Military values. Everyday peace of mind.

A commitment to protect and serve. A standard we bring to every assignment.

100% VETERAN OWNED

PPO #122885

OUR STORY. OUR STANDARD.

Your Safety Is Our Mission.

Castellan Protective Services brings military discipline, integrity and accountability to private security. Based in San Ramon, California, we build coverage around the people and places that matter to you.

From a welcoming presence at a school entrance to a watchful patrol after business hours, our approach is straightforward: understand the site, prepare the team and communicate clearly.

Meet our leadership

WHY CHOOSE CASTELLAN

Our values show up on site.

Veteran owned

Built on military values of discipline, integrity, accountability and service before self.

Professional presence

Uniformed officers and clear responsibilities shaped around your environment.

Reachable leadership

Direct access to company leadership. Your concerns are heard and acted on.

Tailored planning

We assess your property and build coverage around your risks and budget.