Proudly Serving California Businesses
and Residences Since 1946
Founded by the Westphal family in 1946 as a local burglar alarm company in the Bay Area, Bay Alarm now protects more than 100,000 residential and commercial customers and communities across the state of California. Now in its third generation of family management, Bay Alarm has become the largest independently owned and operated burglar alarm company in the United States.
For more than six decades, we have provided more than a typical burglar alarm company. We are committed to the professional organizations that benefit California communities and are dedicated to keeping those communities educated, safe and protected. We pledge to provide our customers with peace of mind and security as well as excellent personalized service. Each member of our experienced, professional staff is dedicated to the highest measure of service. We take great pride in our work and the Bay Alarm guarantee that our products, workmanship and services always exceed expectation.