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Learn about our screening process

98% Recommended

12 Years In Business

Company Details


  • Mon: 9:00 AM - 9:00 PM
  • Tue: 9:00 AM - 9:00 PM
  • Wed: 9:00 AM - 9:00 PM
  • Thu: 9:00 AM - 9:00 PM
  • Fri: 9:00 AM - 9:00 PM
  • Sat: 9:00 AM - 9:00 PM
  • Sun: 9:00 AM - 9:00 PM
View All Details & Credentials


Service Details

    Areas of Expertise

    • Lockouts
    • Rekeys
    • Lock Installations
    • lock repair
    • Locks Change
    View All Offerings and Cities Served

    Cost Information

    • Trip Charge May Apply
    • Credit Cards Accepted


    82 Verified Reviews
    • 5
    • 4
    • 3
    • 2
    • 1

    Highly rated for

    • Quality
    • Value
    • Customer Service
    Showing 1-10 of 82 reviews Showing 0 reviews
    5.0 Carol C. Sunnyvale, CA

    Great customer service & good quality

    Response from Company:

    Thank you very much for your feedback

    5.0 William S. San Carlos, CA

    High quality

    Response from Company:

    Thank you so much for your rating!

    5.0 Shin N. San Jose, CA

    FAST quick service

    Response from Company:

    Thank you kindly for your feedback!


    Avantguard did a great job! Punctual, great customer service, variety of door knobs and locks to choose from, the price they quoted was the price I paid, knowledgeable in locks and doors and answered my questions, efficient and speedy service,

    Response from Company:

    Thank you Kim for your awesome feedback

    5.0 Carlos N. San Francisco, CA

    Excellent communication, straight forward pricing without any hidden feeds, and even helped me with another lock in the same household outside of this original request.

    Response from Company:

    Thank you Carlos for your best feedback

    5.0 Ramya A. San Francisco, CA

    Avantguard was responsive, quick and efficient.

    Response from Company:

    Thank you for your feedback

    5.0 Dominic B. Mountain View, CA

    Response from Company:

    Thank you Dominic for your rating

    4.0 Roger C. Menlo Park, CA

    Response from Company:

    Thank Roger for the "Good rating"

    5.0 Monica M. San Francisco, CA

    Adam was very knowledgeable and professional!

    Response from Company:

    Thank you Monica

    5.0 Celeste D. San Jose, CA

    Adam was able to repair my old lock on short notice at the busy time of year. Much appreciation!

    Response from Company:

    Thank you very much for your feedback

    Showing 1-10 of 82 results Showing 0 of 0 results


    Avantguard Locksmith
    Changing Old Locks in San

    HomeAdvisor allows Service Professionals to post information about themselves and their business on their profile. HomeAdvisor does not review or verify the information representations set forth in those profiles as they are self-reported by the Service Professional.

    HomeAdvisor verifies state-level licensing where applicable - note: some states require local or county level licensing and you should verify whether or not your pro is properly licensed.
    To find more licensing information for your state, visit our Licensing Requirements page.

    Seal of Approval

    What is the screening process that Service Professionals go through in order to become members of the HomeAdvisor network?

    1. Verify Trade License
      HomeAdvisor checks to see if the business carries the appropriate state-level license.
    2. Verify Insurance
      As a part of our screening process, we encourage professionals to carry general liability insurance. We require coverage for hundreds of services.
    3. Verification of State Business Filings
      For business types that require a Secretary of State filing, we confirm that the business is in good standing in the state in which it is located.
    4. Criminal Records Search
      HomeAdvisor uses 3rd party data sources to conduct a criminal search for any relevant criminal activity associated with the owner/principal of the business.
    5. Sex Offender Search
      We confirm that the owner/principal is not listed on the official state Sex Offender web site in the state in which the owner/principal of the company is located.
    6. Bankruptcy Search
      We use 3rd party data sources to check the history of the principal/owner of the business for bankruptcy filings by or against them.
    7. Legal Search for Civil Judgments
      We use 3rd party data sources to check the principal/owner of the business for state level civil legal judgments entered against them.
    8. Liens Search
      We use 3rd party data sources to check the principal/owner of the business for liens placed against them.
    9. Identity Verification (SSN)
      HomeAdvisor verifies the social security number(s) of the owner/principal for identity check purposes. This check applies primarily to smaller business entities.
    10. Identity Verification (Reverse Phone Lookup)
      We conduct a reverse business phone lookup to identify records matching the phone number information provided by the business.

    NOTE: Member service professional information confirmed as described above may change or expire over time; while HomeAdvisor attempts to maintain accurate and up-to-date information, and confirms changes when notified, we cannot guarantee that profile and screening information is accurate. Therefore, we recommend that before working with a service professional you verify that information presented is still current and/or acceptable to you.
    Please see HomeAdvisor's Terms and Conditions for a full description of how we screen Service Professionals

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