Licensed Commercial Site Security
Armed and unarmed security guards for commercial buildings
Stop potential threats without violence. Expertly trained guards for your business.
Trusted by Builders & Developers
Trusted Security Serving California Since 1989
Are Your Tenants and Assets Vulnerable?
Corporate offices and industrial parks are prime targets for unauthorized access and property crime. You need a Comprehensive Security Service to maintain a safe environment for your tenants. We help you deter theft & vandalism.
Stop Property Crime
We actively deter theft and vandalism with professional uniformed guards. Call us today.
Secure Your Assets
Rely on our officers to protect commercial inventory and proactively deter warehouse burglaries.
Manage Building Entrances
We provide seamless access control for business by integrating our staff with your existing commercial building access control systems.
Visible Deterrent Security Guards
We offer premium solutions for office building security and multi-tenant building guards.
Armed & Unarmed Guards
Choose the appropriate level of force for your property. We deploy top-tier commercial property guards and corporate guards to fit your needs.
Mobile Vehicle Patrols
High-visibility security vehicle patrols used by armed guards to secure your perimeter for meticulous security oversight.
Perimeter & Gate Guards
We provide expert access control and perimeter monitoring for large industrial and commercial parks.
24/7 Rapid Response
Our officers provide 24/7 rapid emergency response, and detailed incident reporting so your property managers always have accurate daily logs.
Expertly Trained Commercial Security Guards in California
We deploy law enforcement based security personnel trained in de-escalation and asset protection.
Expert De-Escalation Tactics
We deploy law enforcement based security personnel trained in de-escalation and asset protection.
Lobby & Reception Ambassadors
Our commercial lobby guards provide excellent customer service while strictly enforcing your commercial door access control systems and managing visitor logs.
Corporate Site Protection
From office tower guards to business park guards, our officers ensure reliable building entrance security so your employees and tenants feel safe.
AI Evidence Collection
Armed static guards can use AI mobile surveillance trailers with high-definition video evidence to support your armed asset protection strategy.
Enhanced Commercial Security with Mobile AI
Solar-powered AI trailers provide continuous monitoring for blind spots, working hand-in-hand with your business security guards.
Multiply your corporate site protection footprint without the cost of hiring a massive team of commercial static guards.
Why choose Comprehensive Security Services?
Looking for a top tier commercial building security company? Protecting your tenants is your top priority; making it happen is ours.
Proven Track Record
Trusted security since 1989. We are the top choice among private armed security companies.
Top Tier Talent
We employ the best armed security companies talent, including off-duty law enforcement.
Regional CA Expertise
Decades of experience serving the unique regulatory needs of California sites with security guard services for nearly 40 years.
Security Guards for California
CSSI specializes in serving the following counties in Northern California, Central California, and Southern California, including:
Butte, Colusa, El Dorado, Glenn, Lassen, Modoc, Nevada, Placer, Plumas, Sacramento, Shasta, Sierra, Siskiyou, Sutter, Tehama, Yolo, Yuba Del Norte, Humboldt, Lake, Mendocino, Napa, Sonoma, Trinity
Alameda, Contra Costa, Marin, San Francisco, San Mateo, Santa Clara, Solano
Alpine, Amador, Calaveras, Madera, Mariposa, Merced, Mono, San Joaquin, Stanislaus, Tuolumne
Monterey, San Benito, San Luis Obispo, Santa Barbara, Santa Cruz, Ventura
Fresno, Inyo, Kern, Kings, Tulare
Riverside, San Bernardino
Los Angeles
Orange
Imperial, San Diego
Request Quote
To get an estimate or request a quote, please contact CSSI for a free security consultation.
