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Find Locksmiths in Cupertino

Avatar for Guardian Protection
Guardian Protection
4.7(
2,120
)

Serving Cupertino, CA and surrounding areas

In business since 1950

Free estimates

Warranties offered

"We hired Guardian to install our security system at our Washington, DC, business. The service and quality of the work was horrible. We had cameras and an alarm system installed; it was a relatively large system. They outsource most of the work to various vendors. They could not manage their vendors; what was supposed to take a week took two months. The sales rep did not return calls, and you could never get anyone in management on the phone. Random people would show up at unannounced times. The few things that an actual Guardian employee did were they made a huge mess of our newly remodeled office and were rude to our staff. We have offices in five markets across the US and have high security at each; we have never had such a poor experience."
Recommended by93%of homeowners
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Avatar for INNOVATION PAINTING
INNOVATION PAINTING
4.7(
208
)

Serving Cupertino, CA and surrounding areas

Free estimates

Emergency services offered

Warranties offered

"Great work from Daniel and his team. Innovation Painting took care of our home in San Francisco. Prompt, friendly, and great attention to detail. After they were done painting, Daniel walked me around the property to go over things they uncovered while painting, like suggested repairs, which I very much appreciated. I would absolutely recommend Innovation Painting. Thanks!"
Recommended by90%of homeowners
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FAQs for locksmith service projects in Cupertino, CA

The installation timeframe varies based on door preparation and lock complexity. For doors already prepared with appropriate holes, installation might take 15 to 30 minutes. New installations requiring drilling take one to two hours. First-time DIY installers should allocate additional time to ensure proper alignment and function. Professional locksmiths complete standard installations efficiently due to their specialized tools and experience.

Most residential doors can accommodate deadbolts, but certain door types present challenges. Solid wood and fiberglass doors accept standard deadbolt hardware, while metal doors require specialized drilling equipment. Hollow-core interior doors lack the structural integrity to properly support deadbolts without additional reinforcement. Doors should be at least 1â…ś inches thick to properly house standard deadbolt mechanisms.

Door warranties remain valid when deadbolts are installed according to the manufacturer's guidelines. However, improper installation that damages the door structure might affect warranty coverage. 

Before modifying any door under warranty, review the documentation for specific limitations or requirements regarding hardware installation. Some manufacturers provide templates or guidelines for acceptable lock placement to maintain warranty protection.

Rekeying offers a more economical alternative to complete replacement when you need to change access, but the lock mechanism remains in good condition. This process involves reconfiguring the internal pins to work with a new key while retaining the existing hardware. For homeowners with multiple locks, rekeying provides the convenience of using a single key for all entry points while maintaining security.