SDA Security is the #1 locally owned and operated safety and security provider in Southern California since 1930.

SDA is a full service shop offering advanced Fire, CCTV, Access Control & Security solutions to residential, commercial and governmental entities. Our 7,000+ customers are a testament to our commitment to you. Partners in Your Protection SDA treats each client as family. We remember your name, birthday. Your kids' names and birthdays. Pets too. Don't be surprised if we stop by your home or office after a call - to make sure your system is working properly, and drop off that birthday bone for Fi...

SDA is a full service shop offering advanced Fire, CCTV, Access Control & Security solutions to residential, commercial and governmental entities. Our 7,000+ customers are a testament to our commitment to you. Partners in Your Protection SDA treats each client as family. We remember your name, birthday. Your kids' names and birthdays. Pets too. Don't be surprised if we stop by your home or office after a call - to make sure your system is working properly, and drop off that birthday bone for Fido. We are committed to being much more than a number you call once a year for a false alarm. Over the course of your relationship with SDA, you'll get to know us, like us, and trust us when we promise that if you ever experience a true emergency, hearing a familiar voice will be the comfort you nee