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

Citadel Private Security, a California‑licensed PPO (#121578), offers BSIS‑certified guards with same‑day deployment and 2‑hour emergency response. With 15+ years experience, 100+ active sites, and a 98% client retention rate, it provides 24/7 dispatch, dedicated account managers, and services ranging from event and commercial security to armed patrols across industries.

Guardian Security Group provides 24/7 on‑site security, executive protection, event staffing, loss‑prevention strategies, and technology‑focused safeguards. Their uniformed guards are trained to adapt to varied client needs, with custom plans highlighted by positive client testimonials. Notable clients include Airbnb, Marriott, Salesforce, Samsung, Live Nation, and other leading brands worldwide.

Overton Security provides on‑site guards, mobile patrols and executive protection for sectors such as construction, healthcare, retail and residential communities. With 26 + years experience, it uses guard‑tour tracking, a client portal and dispatch communications. The company holds a 4.6‑star rating from over 1,200 reviews and serves many California and Texas locations.

Licensed Security Guard Company in California. We offer 24x7 Security Guard Services in all of California's major cities. Call 8885725545

Metro Security Services offers unarmed, mobile patrol, fire‑watch, event, traffic‑control, and parking‑lot guard solutions across the Bay Area and Sacramento. They serve corporate, residential, medical, retail, construction, and campus sites, employing licensed, bonded personnel. Positive client feedback highlights reliability, professionalism, rapid response, 24/7 coverage, and overall security needs today.

Veterans Covert Protection Group, a veteran‑owned firm, delivers intelligence‑driven corporate, executive, residential, and event security across the Bay Area. Services include armed and unarmed guards, 24/7 rapid response, and customized risk assessments. Licensed, insured, and highly rated on Google, the local team supports private tech, AI, and finance enterprise leaders.

AX9 Security is dedicated to the safety and security of our clients and their assets. We are able to customize security services to meet the specific needs of each client.

BlueSky Private Security offers residential and commercial protection across the East Bay and Tri‑Valley, featuring trained site officers and roving patrols. The firm emphasizes professionalism and reliability, providing client reporting tools and online application options. Social media links suggest active community engagement and updates for clients seeking peace of mind.

Sureline Security offers private guard and mobile‑patrol services for retail plazas, essential facilities, and HOA communities across Greater Sacramento and the San Joaquin Valley. Their approach includes high‑visibility patrols, real‑time GPS‑verified reporting, and customizable pricing. All officers are California‑licensed, insured, and can be deployed within 24‑48 hours to meet client needs effectively.

OnPatrol, Inc. delivers security services built on people, training, processes, technology, and feedback. Offerings include vehicle patrol, executive protection, event security, off‑duty police, armed and unarmed officers, and concierge staffing. Their accountability system uses electronic guard tours and GPS tracking. A four‑step workflow—assess, build, protect, support—serves over 9,000 clients globally.