Security Guard & Private Security Companies in Fairfield

Fairfield bills near the California mid-cost baseline — below the core Bay Area but above the Central Valley. A standing unarmed post over a 12-hour daily shift runs a monthly rate built on roughly $22–$35/hour before markup, while shared patrol across a route costs far less per site. Compare quotes from several licensed PPOs on scope.

Our directory lists 36 security guard and private security companies in Fairfield. Most hold an active license with their state licensing board (such as California BSIS or Illinois IDFPR) and offer on-site security guards, executive protection, corporate security, mobile patrol and alarm monitoring.

Companies are ranked on merit: those with a verified, active state license come first, followed by verified reviews and track record. Reviews count 7 days after they're published. If you only want to see companies with a verified license, check the list of state licensed security companies in Fairfield.

Costs vary by service type. A security guard post in Fairfield runs between $8,000 and $13,000 per month for a 12h daily post; an executive protection agent between $15,000 and $35,000 per month; event security between $35 and $60 per guard per hour. We recommend requesting 2-3 quotes to compare.

Security companies in Fairfield offer on-site security guards, armed security, mobile patrol, event security, executive protection, corporate security, warehouse and industrial security, residential and HOA security, alarm monitoring, video surveillance and security consulting. Each profile details the specific services each provider offers.

Each profile shows the company's license status and, where available, its license number. You can cross-check it on your state licensing board's public lookup — the Bureau of Security and Investigative Services (BSIS) in California or the Department of Financial and Professional Regulation (IDFPR) in Illinois. If a company doesn't appear in the registry, or its license shows as expired, suspended or revoked, don't hire it.

Use our quote form to describe what you need (type of service, area within Fairfield, shifts, number of guards) and we share your request with licensed companies so interested providers can contact you with a quote. It's 100% free with no obligation.

For standard services like on-site guards or alarm monitoring, coverage can typically start within 48-72 hours of accepting a quote. For specialized services (executive protection, large events), expect 5-10 business days for personnel selection, screening and site onboarding.

If an incident occurs involving personnel from an unlicensed company, you can face negligent-hiring liability. Unlicensed operators also frequently lack certified training, guard registration (guard cards) and active liability insurance, and states can fine businesses that knowingly use them. Always verify the state license before signing a contract.