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

Citadel Private Security offers licensed, insured guard services across California, featuring BSIS‑certified officers, 24/7 dispatch, and same‑day deployment. Clients report rapid response, consistent coverage, and a 98% retention rate. Services include armed and unarmed patrols, event security, and industry‑specific solutions for construction, retail, and residential properties.

Guardian Security Group delivers 24/7 on‑site protection, executive escort, event coverage, loss prevention, and technology‑based security solutions. Their team of uniformed, trained guards tailors plans to each client’s needs, ensuring reliable, responsive service. Positive client feedback highlights reliability and flexibility, while a growing roster of high‑profile partners underscores industry trust and reputation.

Metro Security Services offers a range of guard solutions—including unarmed, mobile patrol, fire watch, traffic control, event, and parking lot security—across the Bay Area and Sacramento. Their team is certified, bonded, and trained, serving corporate, retail, medical, campus, and residential clients. Positive client reviews highlight professionalism, reliability, and responsive service for businesses and events.

Overton Security offers uniformed guards, mobile patrols, and executive protection across California and Texas. With 26+ years experience, 4.6‑star rating, and 1,200+ client reviews, the firm emphasizes training, technology, and industry‑specific solutions for construction, retail, healthcare, and residential sites, backed by a client portal and real‑time dispatch.

Securelion Security offers 24/7 unarmed guard, fire watch, mobile patrol, golf‑cart, and vehicle guard services across California. With over 40 years of experience, the company provides licensed, insured officers, background‑checked and trained, and includes live‑dispatch tracking. Clients note punctual, courteous guards and responsive customer support for businesses and institutions today.

Veterans Covert Protection Group (VCPG) offers veteran‑led, licensed, and insured security services across the Bay Area, including executive, corporate, residential, event, armed and unarmed protection. With 8 years of experience, 5‑star Google rating, and 10.9% response rate, the firm emphasizes intelligence‑driven planning, rapid deployment, and 24/7 coverage for clients.

AX9 Security offers nationwide physical security solutions, including guard patrols, 24/7 response, loss‑prevention audits, and event protection. The firm serves commercial, industrial, medical, educational, and hospitality sectors, leveraging a TrackTik backend for real‑time reporting, GPS tracking, and time‑keeping. It holds state and federal licenses, including GSA and DBE certifications.

BlueSky Private Security provides residential and commercial security services in the East Bay and Tri‑Valley areas. The firm offers trained site officers and roving patrols, emphasizing professionalism and reliability. Clients can apply online, and the company maintains a client report and newsletter subscription for updates and promotions.

Sureline Security Services offers private security for retail plazas, essential‑service sites, and HOA communities across the Greater Sacramento and San Joaquin Valley. Services include uniformed patrols, mobile patrols, and on‑site officers, with real‑time digital incident reports and GPS logs. Pricing is customized, and deployment can occur within 24‑48 hours for local properties.

American Global Security offers a broad range of guard services—including armed, unarmed, standing, vehicle patrol, and fire‑watch—across California. With over 30 years of experience, the firm provides 24/7 monitoring, real‑time guard tracking, and a free consultation. Client reviews highlight professional, responsive staff and reliable, flexible security solutions for businesses and communities.