The leading residential and commercial security system provider for more than 75 years.
Securing communities across California, Arizona and Washington


We secure over 155,000 customers, and employ over 1,100 security professionals.
Over the past 75 years, Bay Alarm has grown to become the nation’s largest independently owned alarm company. How did we do it? We have a motto—the “Bay Way." The Bay Way is about doing right by our customers, and treating our fellow Bay Alarm staff members with the utmost respect. We pride ourselves on timely service, quality workmanship, and customer support that goes beyond expectations. With Bay Alarm, you’ll get a security provider that understands your needs and constantly works to ensure you remain secure.
WE’RE A THIRD-GENERATION FAMILY BUSINESS.
For over 75 years, we’ve remained a family-run business dedicated to protecting our customers with innovative security solutions. Although we’re a long way from our first office in the Westphal family kitchen, some things remain as true today as they were in 1946: work hard, be honest, treat each other like family, and deliver the best service possible.




Excellence Starts With Our Employees.
Our employees have an average tenure of 10 years with Bay Alarm, meaning that they’re experts in what they do: from our sales staff, customer service agents, monitoring center team, to field technicians and safety experts, we’re a comprehensive security system provider with unmatched experience and expertise. To give our customers the best service, we require many of our employees to receive more than 2,000 hours of training. We’ve developed a program at Bay University—our in-house training center—that covers in-depth security measures for our technicians, customer service, and corporate staff.
We work closely with local organizations to
ensure customer safety.
We secure residential and commercial properties through our advanced security products and reliable customer support. And to further our promise to keep you safe, we’re affiliated with many local organizations dedicated to community safety. Our affiliates allow us to stay updated on the latest technology and best practice security measures, and they remain a resource in our never-ending effort to keep your community safe.


The communities that we secure are the same communities where we live.
You deserve a security provider that understands
your concerns and unique needs. To that end, you
can rely on Bay Alarm: 90% of our customers live
within one hour of our office locations. We aren’t like other security companies, who box up their products and ship you a difficult-to-install system. We work with you, at your home or business, and help you configure the best security devices for your needs. You can also call on us for continued equipment and technical support throughout the life of your security system, as we can walk you through diagnostics over the phone or in person.
