The best 10 Security Guard Companies near Oakland, California - with verified email and phone number owner contact info

Citiguard, a California security firm, ranks in the INC 5000 Top 100 and serves 0.01% of CA companies. With 50+ years of experience, it offers armed, unarmed, fire‑watch, event, and executive protection, plus vehicle patrol and electronic security. Employees receive comprehensive training, and the company serves residential, commercial, industrial, and hospitality sectors across the state.

ABC Security Service offers armed and unarmed guard deployment, access control, maritime protection, and construction site security. With over 50 years of experience, the firm serves public and private entities, including airports, government facilities, hospitals, and retail venues. Their Ten‑To‑Win program emphasizes guard professionalism and client satisfaction, ensuring reliable, responsive service.

All Nation Security Services offers 24/7 patrol, event, and private‑property security across California, Nevada, Florida, and Texas. With over 20 years of experience, the company provides licensed, bonded officers, real‑time monitoring, and a mobile app for timekeeping and incident reporting. Client reviews average 4.4 stars, noting professionalism and reliability.

The Loss Prevention Group offers California‑approved security guard training, including Guard Card, Baton, Exposed Firearms, CPR/AED, and First Aid courses. They provide Live Scan fingerprinting, mobile services, and online blended classes. With nearly 20 years in the industry, they serve corporate, law‑enforcement, and loss‑prevention clients, processing over 150,000 applicants and offering job listings.

Vigilant Pro Private Security Services offers on‑site security, patrol, and event protection. The firm is noted for its professional, attentive staff and reliable incident prevention. Clients praise the team’s proactive approach and strong qualifications, while the company’s black‑ and Asian‑owned status highlights its diverse leadership and community focus.

Guards Post Security offers San Jose businesses integrated security solutions, including CCTV, access control, alarm monitoring, and remote video verification. Their services extend to professional guards, mobile patrols, emergency response, and specialized security such as K‑9 units and private investigations. The company emphasizes rigorous guard training, client‑focused consulting, and industry‑specific expertise for comprehensive protection.

Diligence Security Group offers veteran‑owned, California‑based security solutions, including armed and unarmed guard services, consulting, technology integration, training, mobile patrols, and executive protection. Their team is licensed, insured, and available 24/7, with real‑time communication and structured protocols. Clients praise the company for professionalism, reliability, and strong client relationships and support.

Alpha Patrol Security offers a range of services, including armed and unarmed guards, employee‑termination security, event protection, patrols, video surveillance, and fire‑watch. The company emphasizes trained personnel, off‑duty police partnerships, and community‑focused employment. Clients can request a free quote and apply for positions through the site today.

All About Security Agency, established in 1996, offers comprehensive security solutions across Northern California, including campus, commercial, corporate, residential, retail, and special‑event protection. Services feature static guards, vehicle patrols, executive protection, permit enforcement, and community security. The firm employs advanced dispatch technology and rigorous incident‑reporting protocols for clients today.

CME Security Services offers licensed, 24/7 security solutions across the San Francisco Bay Area, including unarmed, armed, mobile patrol, event, fire‑watch, foot patrol, and integrated systems. Their multicultural team emphasizes community engagement, and client reviews highlight professionalism, responsiveness, and reliable protection for commercial, residential, and event settings throughout the region.