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Thank you for visiting the website of Sentry Security Services. Contact us today to request a free quote or estimate for our first-rate security services. You may also fill out the form on this page to send us your comments or inquiries.

Service Areas

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We serve the following counties in California:


  • Alameda
  • Contra Costa
  • Napa
  • San Joaquin
  • Santa Clara
  • Solano
  • San Mateo County

Contact Information

Sentry Security Services

Phone: 1-888-SENTRY-1

Email: [email protected] 

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Sentry Security Services, Inc.

3350 Clayton Rd., Suite 220, Concord, CA 94519

Phone: 1-888-SENTRY-1

Email: [email protected]

Insured and Licensed PPO #120678

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