Verified San Antonio home security and alarm companies for alarm systems, cameras, smart locks, and monitoring - serving Alamo Heights, Stone Oak, Helotes, Boerne, Schertz, New Braunfels and beyond.
A good security installer designs around your actual home, explains monitoring costs up front, and does not trap you in a punishing multi-year contract to get a fair price.
San Antonio spreads far and grows fast, and between hail season and hundred-degree summers its homes keep every trade moving. When you compare home security and alarm companies in San Antonio, ask every one of them the same three questions: are you licensed and insured for this exact work, who is actually showing up (your crew or a sub), and what does the warranty cover in writing.
Searching for home security and alarm companies near me in San Antonio? Everyone ranked below serves San Antonio and the surrounding neighborhoods, including Alamo Heights, Stone Oak, Helotes, Boerne, Schertz, New Braunfels. Check the address and service area on a listing before you call, because the closest one is not always the one a search engine puts first.
Based on Google ratings and review volume as of September 2026, the top rated home security and alarm companies in San Antonio are Advanced Homes, Technical Services Group of San Antonio, 316 Security & Home Automation. See the live ranked list, ratings, and contact details on this page.
Every company ranked on this page serves San Antonio and the surrounding area, including Alamo Heights, Stone Oak, Helotes, Boerne, Schertz, New Braunfels. Open any listing for its address, phone number and service area, then call the two or three closest to you. Distance is worth checking yourself: the nearest home security company is not automatically the best one, so this page ranks on rating and review volume first and leaves proximity to you.
A good security installer designs around your actual home, explains monitoring costs up front, and does not trap you in a punishing multi-year contract to get a fair price.
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