Diamond Locksmith

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3 37th Ave Ste 10
San Mateo, CA 94403
+1 (650) 867-5988
http://www.diamondlocksmith.com

Diamond Locksmith is a comprehensive locksmith service provider located in San Mateo, CA, catering to residential, commercial, and automotive needs. Their offerings include key replacement, lock repairs, installations, rekeying, and broken key extraction, all delivered with a commitment to customer satisfaction.

Operating in the Peninsula Bay Area, including cities like Burlingame, Belmont, and San Francisco, Diamond Locksmith prides itself on offering flat rates and professional services. They extend a 15% discount to seniors, veterans, students, and public servants, emphasizing their dedication to the community.

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Reviews

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5.0784 reviews
Food Sage W.
12/9/2025

I broke my 2022 Bolt EUV Car FOB by trying to change the battery. So l ordered 2 New Car FOBs from Amazon. Chevrolet wanted to charge $ 500 to Re Sync 2 FOBs. I made an appointment with...

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Ruth A.
12/15/2025

Very quick service and was able to arrange over text. Deshaun came out on the day I had requested in a timely fashion. Easy peasy!

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Yue X.
9/14/2025

Urgently needed to have my lock changed for my mailbox. They responded and came to change the lock same day. Provided new lock, keys, and everything at very fair price. Very professional,...

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Nick C.
11/24/2025

The Diamond lock people were very helpful and conscientious. Completed the job as promised. Happy to recommend.

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Tazmine R.
12/11/2025

lowest and fastest rate I found on here! They were nice and very efficient. would Call back if i needed other locks changed!

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