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TRUSTED BY SAN MATEO, CA HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon57
    Verified locksmith services reviews

Top-Rated Locksmiths in San Mateo - Updated Nov 2026

Avatar for SafeStreets - ADT Authorized Provider
SafeStreets - ADT Authorized Provider
4.8(
320
)
Security Safe - Install

Serving San Mateo, CA and surrounding areas

Approved (Corporate)

In business since 2010

Free estimates

Emergency services offered

"I called Alarm Protection Group AFTER my office was burglarized. Now I feel SAFE. William is great to work with. He's neat and tidy, prompt, presentable - not a butt-crack type of guy, and he doesn't leave a mess in his wake. He's also knowledgeable about the equipment and only uses high-quality products."
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+1

4 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for ADT
ADT
4.5(
889
)
Security Safe - Install

Serving San Mateo, CA and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 1874

Free estimates

Emergency services offered

"My alarm installer Conner was very easy to work with. He was on the job site on time. He explained how the system work clearly. He took the time to hide all the wires and cleaned as he go. I'm happy with his installation. We highly recommend ADT Authorized Premier Provider to anyone that needs a new alarm or security system."
Home Security Essentials
Smart Home Security
Cameras
Our Team
Home Security Essentials

+35

36 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for Luiz M Construction
Luiz M Construction
5.0(
3
)
Hardware, Latches & Tracks (Door) - Repair or Replace

Serving San Mateo, CA and surrounding areas

Approved

In business since 2006

Free estimates

Warranties offered

We specialize in Bathroom and Kitchen remodeling, including flooring, tile, hardware, and more! We offer a diverse range of services tailored to meet the unique needs of every customer. We take a personalized approach to each project. We work closely with our clients to understand their vision, preferences, and budgetary requirements. We strive to exceed expectations by delivering exceptional service, great quality work, and professionalism on every job. Read more below on all the services we offer and contact us with any questions or to schedule a free estimate today!

2 neighbors recently requested a quote
Recommended by33%of homeowners
Locksmith Central
4.0(
229
)
LocksmithLocksmith - AutoLocksmith - For Business

Serving San Mateo, CA and surrounding areas

In business since 1997

Emergency services offered

Credit card accepted

"They were great. This is the second Big Deal I’ve purchased from them. I didn’t find their pricing competitive with my neighborhood locksmith, but the quality of the work was excellent. They also had good communication & they cleaned up well which was really important to me."
Recommended by73%of homeowners
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Locksmiths FAQs, answered by experts

Door locks should be changed roughly every seven years. The average lifespan of a door lock is seven to 10 years, so it’s best to err on the side of caution and change them early, especially if they are showing signs of wear and tear. Examples of deterioration include visible rust and difficulty opening or closing the door. Some locks can work safely beyond 10 years, but it depends on how often they are used and whether they are exposed to damaging environmental conditions like precipitation or extreme temperatures.

Rekeying door locks yourself costs a fraction of what you would expect to pay a locksmith. On average, it costs between $50 to $100 to hire a local locksmith to rekey your house, though labor costs may vary based on where you live. For a DIY solution, you can expect to spend $11 to $25 on a rekeying kit.

Begin by checking the power source, typically a battery or wired connection. Ensure the battery is installed correctly, has sufficient charge, and isn't corroded. If it's a wired lock, examine the electrical connections to confirm they are secure and free from damage. Additionally, inspect the lock's programming or settings. Confirm that user codes or access credentials are programmed correctly and that any remote control devices are paired and functional.

Aside from the labor costs, several other factors can impact the cost of hiring a locksmith. If you can avoid services during off-hours, you can save on fees often charged for urgent requests. Consider additional factors such as:

  • Type of services required

  • Emergency call fees

  • Home and lock location

  • Number of locks to repair or install

  • Peak hours

  • Type of locks

If you’re having an issue turning the key inside a lock, chances are there is dust or dirt buildup within the cylinder. The easiest solution is applying a dry lubricant to the lock, which loosens the dirt buildup. You may need to turn the key a few times for it to work properly again.

The San Mateo, CA homeowners’ guide to locksmith services

From average costs to expert advice, get all the answers you need to get your job done.