los angeles security company
U.S BASED
24/7 Human
Customer Service
los angeles security company
From home alarm systems to smart security for offices, we provide complete protection solutions tailored to your space. Our experts specialize in installing security alarms, fire and burglar alarm systems, alarm monitoring services, and wireless security systems — all backed by 24/7 support.
Whether you're protecting your family, employees, data, or property, we combine cutting-edge technology with reliable service to deliver peace of mind. Los Angeles Security Company
CEO: Al Radi
WHY CHOOSE
CSI Security as
your Partner

Independent
There's never any runaround, no bait and switch tactics or deceptive disclaimers. At CSI you get nothing but first-class customer service, experience, and reasonable pricing.


Responsive
Serious security relies on rapid response. When your alarm is triggered you can have the confidence of knowing that one of our dispatchers will call you immediately.

Experienced
Our team has decades of experience and thousands of residential, commercial and fire system installations. We have developed keen knowledge in installing trouble free systems.
los angeles security company
Smart Alarm Systems for Every Space
We specialize in custom security solutions for both residential and commercial properties, including:
- Home security systems with real-time mobile alerts
- Business security systems for offices, warehouses, and storefronts
- Fire and burglar alarm systems to protect your property
- Wireless security installation for fast, clean setup
- Alarm system installation tailored to your needs
- 24/7 alarm monitoring services to respond instantly
Whether you're searching for the best alarm company near you or need security alarm monitoring in LA, our team delivers reliable, professional protection.
los angeles security company
Advanced Features.
Local Expertise.
From entryway protection to full-property surveillance, our home security systems are designed for safety and simplicity. Monitor from anywhere, get instant alerts, and trust in a home alarm system built to deter threats and bring peace of mind.
- Smart alarm integration with your phone, smart devices & more
- Fast response from our alarm monitoring center
- Certified installers serving Los Angeles and nearby areas
- Trusted by families and companies across Southern California
Let’s secure your home or office with the right alarm system. Whether you need home security installation in LA, commercial alarm monitoring, or a custom burglar alarm system, we’ll tailor the solution to fit your space and budget.

OUR SYSTEMS ARE ALWAYS
Customized to
Client's Needs
Other companies use a one-size-fits-all approach. At CSI, we understand that every situation is unique.
We believe every customer needs and deserves a custom-tailored security solution. Your protection is too important to do it any other way.

Our security professionals take the time to completely analyze and understand your needs.
Then, we design and recommend a comprehensive solution to fully meet your specific requirements. los angeles security company
los angeles security company
CSI has made all the difference in the world. Out the gate, they have been amazing. I feel totally taken care of and my rep has taken a truly consultative approach to help us navigate our system. He showed up with a technician during the install and was very patient even with all of my questions. Calling their monitoring system is great and the team on the phones is quick, professional and friendly. I highly recommend CSI!
Howard B.
They have great customer service and good attention to detail. It's nice to have a robust security company with the Mom and Pop feel. They have the ability to dispatch their own armed security patrol to check out your property, which let me tell you really saves on False alarm bills. I have recommended them to other people and will definitely continue to do so.
Robert G.
The main aspects that drew us to them were two things: price and the no False Alarms. I signed immediately on the day that I met them and luckily did not have to look back. While there were one or two hiccups on the path to completion, CSI staff and owner addressed everything above and beyond our expectations! Because of all these qualities, I could not recommend a better service in the Los Angeles area for security systems.
Adam A.
Professional people of the highest integrity, at a very reasonable cost. Courteous staff; always on-time, recommending, installing, and monitoring all that you need, and not more. They installed Security cameras, both closed circuit, as well as cloud Ring (various units). This tied it with Door and Window alarms has kept our property safe. I highly recommend them.
Khody K.
CSI Security provides responsive service, great value pricing for monitoring of our burglar and fire monitoring services. They stand by their motto of No False Alarm Fines and if it does happen, they reimburse and ensure that our equipment and monitoring are up to code. Angelia is a great listener.