Compare Security Guards contractors in Martinez, California with websites, phone numbers, addresses, and company profiles. Updated August 2026.
1 Security Guards company in Martinez · showing 11 nearby within 100 miles.
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Professional private security services in San Francisco greater Bay Area, Sacramento & Roseville including foot patrol, event security, asset protection, and fire watch. Reliable, licensed, and ready to protect your property.
Guardian Security Agency, a California‑licensed PPO #11106 firm, offers on‑site and patrol security for commercial, residential, construction and specialized sites. Established in 1992, it leverages over 40 years of combined experience, a dedicated training coordinator, low no‑show rates, and detailed incident reporting to ensure reliable protection peace of mind and safety.
20+ Years Experience | 24/7 Dispatch | Supervisor Oversight | Technology-Enabled Reporting GSG Protective Services Covers Your Community GSG Protective Services is a full-service provider of premium security services specializing in physical security, protective services, and security technology. GSG understands that safety needs may be unique in each situation and we
Hammer Head Security is a California firm offering armed and unarmed guard services, vehicle patrols, event protection, remote camera monitoring, mobile patrols, fire‑watch, and executive protection. It provides guard‑card, use‑of‑force, firearms, and first‑aid training. Service areas include Stockton, Sacramento, Bay Area, San Jose, San Francisco, and Concord, using surveillance and reporting tools.
Professional security solutions for events and businesses. Our trained officers provide comprehensive protection services for all your security needs.
Sentry Security offers mobile patrol, commercial, and construction security across the Bay Area. Founder Ryan Ohm brings two decades of industry experience. Clients note communication, nightly reports, and coordination with police. The site features a blog on parking‑lot safety, visitor‑management, and 2026 tech trends, plus career listings with advancement incentives.
Diplomatic Security Specialists In Training offers BSIS‑certified mandatory and elective courses covering firearm laws, safety, the seven fundamentals of marksmanship, weapon maintenance, systematic patrol routines, liability issues, and courtroom demeanor. Instruction emphasizes real‑world application, strong‑hand and support‑hand drawing, and shooting from cover versus concealment for professional security personnel development today.
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Precision One Protective is a Subchapter S corporation offering security guard and patrol services (NAICS 561612) in Contra Costa County. Operating over two years with roughly six staff, it targets a high‑income market—median household income $147,708, 59% above $100k. The firm faces 34 local competitors within a 21‑mile radius regional.