2026 Ranking
Best Security Companies in San Francisco
Ranking of the best private security companies in San Francisco, California. The order prioritizes verified state licensing, track record and verified reviews; profile views and recommendations only fine-tune the order.
Verified state license Real user views 70 companies in San Francisco
We're still gathering recommendations and verified customer reviews in San Francisco. In the meantime, the order is based on license status and profile views.
Top-ranked companies in San Francisco
All state licensed security companies in San Francisco
70 companies with a verified, active state license, ranked by track record and reputation. All checked against official license records.
- 11AURA FIRE SAFETY State Licensed· Alarm Monitoring
- 12BAY VALLEY INTEGRATION, INC State Licensed· Alarm Monitoring
- 13BIG-EYE SECURITY, INC. State Licensed· Security Guards
- 14BLACK BEAR SECURITY SERVICES, INC. State Licensed· Security Guards
- 15BLOCK BY BLOCK, CALIFORNIA State Licensed· Security Guards
- 16CALBAY PROTECTIVE SERVICES, INC. State Licensed· Security Guards
- 17CENTRAL PARKING SYSTEM State Licensed· Security Guards
- 18CITISHIELD INCORPORATED State Licensed· Security Guards
- 19CONCENTRIC ADVISORS, INC. State Licensed· Security Guards
- 20CORE1 SECURITY SERVICES State Licensed· Security Guards
- 21CRIME WATCH SECURITY SYSTEM State Licensed· Alarm Monitoring
- 22CRITICAL SYNTHESIS SECURITY State Licensed· Security Guards
- 23DC SECURITY State Licensed· Alarm Monitoring
- 24EMBATTLE PROTECTIVE SERVICES State Licensed· Security Guards
- 25EXECUSHIELD, INC. State Licensed· Security Guards
- 26EXODUS PROTECTION GROUP State Licensed· Security Guards
- 27FOXTRON SECURITY State Licensed· Alarm Monitoring
- 28GEFION GROUP State Licensed· Security Guards
- 29IMK7+ PRIVATE SECURITY SERVICES State Licensed· Security Guards
- 30INTEGRATED SECURITY SERVICES, INC. State Licensed· Security Guards
- 31JONES PROTECTIVE SERVICES INC State Licensed· Security Guards
- 32K DUBB SECURITY State Licensed· Security Guards
- 33KEELSON STRATEGIC CORPORATION State Licensed· Security Guards
- 34MARINA SECURITY SERVICES, INC. State Licensed· Security Guards
- 35MCGILL'S SECURITY & K9 PATROL SERVICE INC. State Licensed· Security Guards
- 36MCMILLAN SECURITY SYSTEMS State Licensed· Alarm Monitoring
- 37MIRADOR SECURITY State Licensed· Security Guards
- 38MITCHELL GROUP PRIVATE SECURITY FIRM State Licensed· Security Guards
- 39MJF & ASSOCIATES CONSULTING State Licensed· Security Guards
- 40NILE SECURITY SERVICES State Licensed· Security Guards
- 41NOB HILL SECURITY State Licensed· Security Guards
- 42NORTHWEST SECURITY, INC. State Licensed· Alarm Monitoring
- 43PACIFIC HEIGHTS SECURITY State Licensed· Security Guards
- 44POLY-ON SECURITY SYSTEM, INC. State Licensed· Alarm Monitoring
- 45PRECISION SECURITY SOLUTIONS State Licensed· Security Guards
- 46PROGUARD SECURITY SERVICES, INC. State Licensed· Security Guards
- 47RAMBO SECURITY SERVICES, INC. State Licensed· Security Guards
- 48RCB SECURITY, INC State Licensed· Security Guards
- 49RED DRAGON PRIVATE SECURITY State Licensed· Security Guards
- 50RG SECURITY SOLUTIONS INC State Licensed· Security Guards
Ranking methodology
The order reflects real, verifiable signals that are hard to manipulate. Companies with a verified state license appear first; within that group we prioritize the best-reviewed (verified reviews) and the most established according to official records. Profile views and community recommendations only fine-tune the order — a couple of votes can't move positions. For each company we show exactly which signals back its position.
- State license — we verify each active license against state licensing boards like California BSIS and Illinois IDFPR. Licensed companies appear first.
- Real profile views — how many people viewed the company's profile over the last 30 days.
- Community recommendations — user votes with anti-fraud controls (fingerprint dedup).
- Verified customer reviews — customer rating and review volume, when available.
Looking for more options in San Francisco?
Browse the complete directory with all 70 private security companies listed in San Francisco, filter by service type and compare pricing.
View full directorySecurity services in San Francisco
Security Guards en San FranciscoArmed Security Guards en San FranciscoMobile Patrol en San FranciscoEvent Security en San FranciscoExecutive Protection en San FranciscoCorporate Security en San FranciscoWarehouse & Industrial Security en San FranciscoResidential & HOA Security en San FranciscoConstruction Site Security en San FranciscoAlarm Monitoring en San FranciscoVideo Surveillance & CCTV en San FranciscoFire Watch Services en San FranciscoSecurity Consulting en San Francisco
More about private security in San Francisco
Directory of San FranciscoAll security companies, with search and pagination.State Licensed in San FranciscoOnly companies with an active state license.
See all security companies in CaliforniaFrequently asked questions
What are the best private security companies in San Francisco?
Top companies in San Francisco include 1 CERBERUS SECURITY & PATROL, A&F SECURITY SERVICE, A1 PROTECTIVE SERVICES, INC., AM/PM SECURITY SPECIALIST, AMB PROTECTIVE SERVICES, based on their active state license and the volume of profile views and community recommendations on HireSecurityNow. The order updates continuously based on these signals.
How is the ranking of security companies in San Francisco determined?
Companies with a verified, active state license appear first, checked against official licensing board records like California BSIS and Illinois IDFPR. Within that group, the order reflects real profile views over the last 30 days, community recommendations (with anti-fraud controls) and verified customer reviews when available.
Are the ranked companies state licensed?
We verify each company's license status against official state licensing board records. Each company's profile shows its license number and status when it holds an active license.
How do I hire one of these companies in San Francisco?
You can get free quotes from any company in the ranking: open its profile, submit a quote request with your requirements and you'll receive proposals directly. All quotes are free and come with no obligation.
How many security companies are listed in San Francisco?
Our directory lists 70 companies in San Francisco, California. You can browse the complete list in the San Francisco security companies directory.