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Business Description
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.

Regular Hours

Commercial Service: Bay Alarm is equipped to provide the best in commercial security. From your initial assessment by our security consultant to the installation and monitoring of your Bay Alarm security solution you will have the benefit of some of the best screened and trained professionals in the industry. With the most extensive training and continuation program in the industry, you can be certain your needs will be handled by the most experienced organization in the industry. Bay Alarm serves businesses of all types and sizes across California. We understand the importance of commercial security and life safety solutions because we've built our own business and need what you need - to protect our employees, our inventory and services, and the legacy of all our endeavors. Residential Service: The Bay Alarm family takes the protection of your own home and family very seriously and has overseen the residential security needs of California homes for three generations. Choose from an extensive line of our detection and alarm productions, with a variety of options to fit your needs as well as your budget. Our highly trained, courteous and watchful staff will work with you to ensure your home is properly protected and monitored at all times. You can rest assured that the safety of your home, family and possessions are in good hands with Bay Alarm. We take great pride in our ability to provide peace of mind and comfort for tens of thousands of people and their loved ones.

Bay Alarm Company

Serving your Local Area

Central Station Alarm Association (CSAA)

National Fire Protection Association (NFPA)

Factory Mutual (FM)

California Alarm Association (CAA)

Underwriters' Laboratories (UL)



BURGLAR ALARM ASSOCIATIONS: - California Alarm Association (CAA) - NetOne - Local Area Alarm Associations


FIRE ALARM ASSOCIATIONS: - Automatic Fire Alarm Assocation (AFAA) - California Automatic Fire Alarm Association (CAFAA)


ALARM INDUSTRY ORGANIZATIONS: - American Fire Sprinkler Assocation (AFSA) - Central Station Alarm Assocation (CSAA) - 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)


LAW ENFORCEMENT AGENCIES: - Contra Costa County Sheriff's Department - Contra Costa County LAw Enforcement Training Center (LETC)


 FIRE DEPARTMENT ORGANIZATIONS: - Northern California Fire Prevention Association (NorCal FPO) - Southern California Fire Prevention Association (SoCal FPO)

Security Control Systems & Monitoring, Fire Protection Equipment & Supplies, Surveillance Equipment, Security Equipment & Systems Consultants, Fire Alarm Systems


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