Benefit From Our Experience Securing Homes and Businesses For More Than 70 Years

Unmatched Employee Standards

Our employees average 10 years with Bay Alarm which means they’re specialists who know how to serve you.

Employee Background Checks

All our employees are background checked, fully licensed, and always carry their badge so you know they’re who they say they are.

Local Sales and Service

In most cases, our branch technicians are no more than a one-hour drive from our customers, so we can respond quickly to service issues.

Highly Trained Employees

Many of our employees receive over 2,000 hours of training at Bay Alarm so they know our products and services, inside and out.

Our Story

Founded in 1946, Bay Alarm is a family-run, locally-operated company with security our one and only business. It's also our passion. We live and work in the communities we protect. That makes us different from many security companies. We know the needs of neighborhoods like yours. We’re dedicated to working with community organizations that keep you informed and protected. And we guarantee that our products, workmanship and services always exceed your expectations—all of which gives you the peace of mind you want and deserve.


The Bay Alarm Technician Difference


Learn More About Bay Alarm

Now in its third generation, Bay Alarm is the largest independently owned security company in the nation. Watch this interview with the current generation of the Westphal family to learn more about Bay Alarm's roots and commitment to building community.


Safe, secure neighborhoods happen when communities build programs that empower, educate, and improve quality of life for those who live and work there. That’s why we support charities and organizations that benefit communities like yours.

Community and Philanthropy

Beach Cleanup with our Carson Branch Team


Bay Alarm is proud of its affiliations and associations with organizations committed to keeping you safe and secure.

Law Enforcement Agencies

  • Contra Costa County Sheriff’s Department
  • Contra Costa County Law Enforcement Training Center (LETC)

Alarm Industry Organizations

  • American Fire Sprinkler Association (AFSA)
  • The Monitoring Association (TMA)
  • Electronic Security Association (ESA)
  • Factory Mutual Approvals (FM)
  • National Systems Contractors Association (NSCA)
  • Underwriters Laboratories Listed (UL)
  • Western Burglar and Fire Alarm Association Unilateral Apprenticeship Training Committee (WBFAA)

Burglar Alarm Associations

  • California Alarm Association (CAA)
  • Arizona Alarm Association (AZAA)
  • NetOne
  • Local Area Alarm Associations

Fire Alarm Associations

  • Automatic Fire Alarm Association (AFAA)
  • California Automatic Fire Alarm Association (CAFAA)
  • Arizona Automatic Fire Alarm Association (AZAFAA)

Balco Properties

Balco Properties Ltd., LLC was formed in 1976 by the principals of Bay Alarm Company. Since its inception, Balco has taken an owner-managed approach, making sure customers have access to great property and first-class property management.

Fire Department Organizations

  • Northern California Fire Prevention Association (NorCal FPO)
  • Southern California Fire Prevention Association (SoCal FPO)

How is Bay Alarm different than other security companies?

We are proud to live and work in the communities we serve, which translates to improved safety and security for your home and business.
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Why are Bay Alarm technicians the best in the security business?

Our technicians don’t work on commission. Their motivation isn’t profit, it’s service. Read our Compare page to see what else separates us from the competition.
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How can I be sure Bay Alarm installers and technicians are trustworthy?

At Bay Alarm, we use our own screened and highly trained security technicians and installers.
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