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Which Security Systems & Service Provider Should You Choose in California?

Review 200 security providers across California, including Los Angeles, San Diego and San Francisco, and find out what each company offers. Consider customer feedback and business details, then shortlist providers who offer the systems or protection services you need.
Alameda (1)
Anaheim (1)
Bakersfield (1)
Bell (1)
Berkeley (1)
Beverly Hills (1)
Buena Park (1)
Camarillo (1)
Campbell (2)
Carlsbad (1)
Cathedral City (1)
Cerritos (2)
Claremont (1)
Concord (3)
Corona (1)
Coronado (1)
Costa Mesa (2)
Dana Point (1)
Diamond Bar (1)
Dublin (2)
El Cajon (2)
Elk Grove (1)
Encinitas (1)
Escondido (2)
Eureka (1)
Folsom (1)
Fontana (2)
Fremont (1)
Fresno (3)
Fullerton (1)
Garden Grove (3)
Gardena (3)
Glendale (2)
Hawthorne (1)
Hayward (1)
Hesperia (1)
Imperial (1)
Indio (1)
Inglewood (1)
Irvine (5)
La Crescenta-Montrose (1)
La Habra (1)
La Quinta (1)
Laguna Hills (1)
Laguna Niguel (1)
Lake Elsinore (2)
Lakeport (1)
Lakewood (1)
Long Beach (3)
Los Alamitos (1)
Los Angeles (12)
Marina del Rey (1)
Merced (1)
Milpitas (1)
Montclair (1)
Monterey (1)
Morgan Hill (1)
Nipomo (1)
North Highlands (1)
Ontario (1)
Orange (2)
Orangevale (1)
Oxnard (1)
Palm Desert (1)
Palm Springs (1)
Paradise (1)
Pasadena (3)
Paso Robles (1)
Pismo Beach (1)
Placentia (1)
Pleasanton (1)
Rancho Cordova (1)
Rancho Cucamonga (1)
Rancho Santa Fe (1)
Redlands (1)
Redwood City (1)
Riverside (2)
Rocklin (1)
Roseville (3)
Sacramento (3)
Salinas (1)
San Bernardino (3)
San Carlos (1)
San Clemente (2)
San Diego (11)
San Francisco (7)
San Gabriel (1)
San Jose (6)
San Leandro (2)
Santa Ana (2)
Santa Clara (3)
Santa Fe Springs (1)
Santa Monica (1)
Santa Rosa (2)
Santee (1)
Signal Hill (1)
Solana Beach (1)
Stockton (5)
Summerland (1)
Sunnyvale (1)
Tahoe City (1)
Temecula (2)
Thousand Oaks (2)
Torrance (4)
Tracy (2)
Tustin (1)
Twain Harte (1)
Vacaville (1)
Vallejo (2)
Ventura (1)
Victorville (1)
Visalia (2)
Whittier (3)
Windsor (1)
Woodland Hills (1)
7 reviews
American Reliance Security
19 Years
Emergency
7 reviews
Decades of experience in security industry with battle-tested expertise
Trusted security guard services in Southern California since 2007. Offering armed/unarmed guards, mobile patrols, and event security across Los Angeles, Orange, Riverside, and San Diego counties.
Armed Security Unarmed Security Mobile Patrol
(800) 823-6297 Call Profile
5 reviews
Armstrong Guard Services
11 Years
Emergency
5 reviews
We provide 24/7 personalized customer support.
Armstrong Guard Services offers professional armed and unarmed security guards, firewatch, and mobile patrol services in Los Angeles. State-licensed, insured, and available 24/7, we provide customized security solutions for residential, commercial, and in
Armed Security Unarmed Security Firewatch Security
(818) 818-4047 Call Profile
5 reviews
Veritas Security Services
14 Years
Emergency
5 reviews
We offer 24/7 security services tailored to client needs
Veritas Security Services offers comprehensive security solutions in Los Angeles, including alarm response, event security, and CCTV monitoring, ensuring reliable protection for homes and businesses.
Alarm Response Construction Site Security Unarmed Security Guards
(213) 377-2222 Call Profile
5 reviews
American Force Private Security
24 Years
Emergency
5 reviews
Over a decade of security expertise in Southern California
Trusted security services in San Bernardino since 2002. American Force offers 24/7 armed guards, mobile patrols, alarm monitoring, and event security across Southern California. Call (866) 304-2627 for free quote.
Standing Guards Alarm Monitoring Mobile Patrol
(866) 304-2627 Call Profile
4 reviews
RSI Security
4 reviews
We are the nation's premier compliance and cybersecurity provider
RSI Security offers expert cybersecurity solutions and compliance services in San Diego, ensuring data protection and regulatory adherence for businesses through personalized, audit-ready strategies.
Compliance Advisory Penetration Testing Cloud Security
(858) 999-3030 Call Profile
4 reviews
Full Access Control
Emergency
4 reviews
We offer 20+ years of local locksmith experience in Los Angeles
Trusted Los Angeles locksmith offering 24/7 emergency services, automotive key solutions, and commercial security systems. Serving residential and business clients since 2005 with certified technicians.
Residential Locksmith Commercial Locksmith Car Locksmith
(424) 209-8270 Call Profile
1 review
MAD Security Services
Emergency
1 review
We offer 24/7 emergency security services with same-day activation
MAD Security Services offers customized private security solutions in Sacramento, CA, with experienced personnel and a focus on client safety and satisfaction.
Construction Site Security Retail Security Event Security
(916) 942-9404 Call Profile
7 reviews
Borges Security Systems
Emergency
7 reviews
We have over 45 years of experience in residential and commercial security systems.
Trusted family-owned security provider in San Jose since 1977. Offering customized Bosch security systems, 24/7 monitoring, and advanced protection for homes and businesses.
Security System Installation 24-Hour Monitoring Fire Detection
(408) 286-2205 Call Profile
2 reviews
Comprehensive Security Services
37 Years
Emergency
2 reviews
Tailored security plans for unique commercial needs
Protect your property with 24/7 armed and unarmed security services from Comprehensive Security Services in California and Nevada. Tailored solutions for commercial sites, events, and disaster recovery.
Armed Security Unarmed Security Vehicle Patrol
(916) 683-3605 Call Profile
Not rated yet
Omni Identity
24 Years
Not rated yet
We have 20+ years of specialized experience in biometric authentication systems
Leading provider of contactless biometric authentication systems for enterprise security. Specializing in facial recognition, iris scanning, and physical access control solutions for banks, casinos, and financial institutions.
Biometric Systems Smartcards RFID
(310) 938-5781 Call Profile