4.6 
45 *The Angi rating for Home Security System Service companies in Fullerton, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Home Security System Service needs.
*The HomeAdvisor rating for Home Security System Service companies in Fullerton, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Home Security System Service needs.
Last update on May 23, 2026
Serving Fullerton, CA and surrounding areas
Approved (Corporate)
In business since 2010
Free estimates
Emergency services offered
"SafeStreets security system is incredibly reliable and easy to use. The app is intuitive, and the home automation features are a game-changer. I love being able to monitor my home from anywhere. Great service all around."
+1
Serving Fullerton, CA and surrounding areas
Approved (Corporate)
Super Service Award Winner
In business since 1874
Free estimates
Emergency services offered
"ADT has exceeded my expectations! The system is reliable, the app is easy to use, and the customer service team is always helpful. I appreciate the environmental monitoring features, which go beyond just security. Knowing my home is protected 24/7 is priceless. I highly recommend ADT to anyone looking for a trustworthy security provider."
+35
Serving Fullerton, CA and surrounding areas
Approved
In business since 2012
Free estimates
Warranties offered
"TCI installed security cameras at our office and home. Their customer service was excellent. They showed up on time and cleaned up after completing the job. I would recommend Gabriel and his Team for any Job."
+4
Serving Fullerton, CA and surrounding areas
Approved
In business since 2016
Free estimates
Credit card accepted
"They had done such an amazing job. I asked for them to install a security camera system at three of my liquor stores. Super friendly, I had gotten such an amazing price, and the work done was extremely well and done fast."
+3
Serving Fullerton, CA and surrounding areas
Approved
Super Service Award Winner
In business since 2001
Free estimates
Warranties offered
"From start to finish, our experience with Professional Home Automation was outstanding. The installation team was professional, efficient, and respectful of our home. They took the time to explain every aspect of the system, ensuring we felt confident in its operation. The quality of their workmanship exceeded our expectations, and we now feel safer and more secure in our home. We highly recommend their services to anyone looking for reliable home security solutions."
Serving Fullerton, CA and surrounding areas
Approved
In business since 2015
Credit card accepted
Offers commercial services
"They answer all my questions regarding my security system Install, very professional and great attitude. Thank you for your service. MV"
Serving Fullerton, CA and surrounding areas
Approved
In business since 2006
Free estimates
Customers say: Quality work
"I'm very satisfied with the project Jose completed at my home."
+11
Serving Fullerton, CA and surrounding areas
Approved
In business since 2004
Free estimates
Customers say: Quality work
"Sam has been and continues to be very responsive, knowledgeable, and concerned for what our needs are with security. He came with a variety of options, and we picked the one we felt best suited our needs. Really enjoyed working with Sam, and we highly recommend Echo to anyone who is in need camera surveillance - residential or commercial. Thanks, Sam!!! Love your work!"
+4
Serving Fullerton, CA and surrounding areas
Approved
In business since 1999
Free estimates
Credit card accepted
"New Tech Security Systems installed a surveillance system in our dental laboratory, consisting of 27 cameras and a 32 channel NVR capable of recording 15-20 days of activity. I am totally and completely satisfied with the quality of work performed by New Tech. From the initial project thru implementation and testing, the owner of New Tech, Mr. Albert Wainer, was personally involved in order to make sure that everything went smoothly and according to schedule. Work was completed quickly, efficiently, and without interference in the normal day to day activities of the lab. After the installation was completed, the lab was left in impeccable condition. I highly and without hesitation recommend New Tech Security. The quality of the equipment New Tech commercializes and the competence of the installation team are exceptional"
+3
Serving Fullerton, CA and surrounding areas
Approved
In business since 2019
Free estimates
Emergency services offered
"Andrew and his team worked very efficiently and cleaned up their mess as if they were never here. They arrived on time to each meeting and was willing to work with my company in finding a system that met our budget. Would definitely recommend them to anyone looking for a good security system! They do it all, the research finding the right system to meet your budget, taking down old systems, installing and tech support! Simply amazing!"
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