Diamond Locksmith is San Mateo's trusted 24/7 mobile locksmith, proudly serving the Bay Area since 2011. Licensed, insured, and bonded, our expert team specializes in residential, commercial, and automotive locksmith solutions including emergency lockouts, lock installation, rekeying, key duplication, transponder key programming, and high-security lock systems. We serve San Mateo, Burlingame, Foster City, Redwood City, South San Francisco, Daly City, Menlo Park, Palo Alto, Belmont, and surrounding Peninsula communities. With 15+ years of experience and hundreds of 5-star reviews, we deliver fast, honest, and professional service every time.
Website: diamondlocksmith.com
Phone: (650) 867-5988
Closed now
- Fri 8:00 AM - 8:00 PM
3 37th Ave, Ste 10 San Mateo, CA 94403 ·2342.46 mi
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Reviews
yelpGot the quote on yelp for reasonable price. Then we schedule for re-key all locks for the house. They came in on schedule. Re-key all locks and tested all keys on locks. One of the patio door's...
MoreExtremely responsive, gave a great price, and they were quick and did the job. They replaced two new dead-bolts our doors.
MoreTimely arrival. Top quality service. My front door lock was broken. It was taken out. Justin installed new smart one and patiently waited for complete setup. He also offered few extra without me...
MoreThis is not what I expected doing business. October 16,2026 I traveled to Half Moon Bay for business, and unfortunately I had a situation with my key fob to my Mercedes and needed it replaced (...
MoreI needed a locksmith to program a key for my Honda that had gotten lost. Ray at Diamond Locksmith was able to schedule an appointment and his associate Desean came out to my house and was able to...
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