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Granite Lock Co., Inc. is a family-owned and operated business serving the South Shore and neighboring communities. Located in the City of Presidents and the city known for its granite quarries, our locksmithing roots date back to 1958 where Dick began his locksmithing career at Granite City Hardware. Granite Lock opened its doors in 1981 when his son, Rick, joined him. From that point forward, we have expanded our business to now include additional service technicians. We are constantly striving to keep up with all the current technologies from cutting of keys, programming transponder keys, modern mechanical and electronic locking systems and much more. Granite Lock is your complete locksmith providing personal, professional service. We are a diversified locksmith here to help you solve your security needs.


Located in Quincy, Granite Lock has been serving the Greater Boston area and surrounding communities since 1981. We are a family-owned bonded and insured full-service locksmith operation providing "rock solid security" to our customers. Over the years, we have invested in state of the art automobile key programming and computer run key machines in order to stay on top of the rapidly changing technology. We offer expert key duplication, lock repairs, lock rekeying, as well as standard replacement hardware to solid forged brass top quality decorative hardware. We install everything that we sell. We also sell, service and repair burglary and fire safes. Residential or commercial, big or small, Granite Lock does it all!


Our showroom has display mounts as well as safety and security related products along with a large selection of keys for auto, home and business. Our staff will be happy to take the time to answer your questions, giving you individualized attention and service.

Our success at Granite Lock results directly from the trust that our satisfied customers have placed in us to solve their security problems. We look forward to doing business with you in the future.


"Easy to deal with, completed service quickly and for the quoted price."

- Paul S.

"Had them programmed two factory keys on my truck . Very fast professional service and better prices than other places . They have a very good name in the area for a reason! Highly recommended!"

- Brian C.

"If you are not using Granite lock for your locksmith needs, you are doing yourself a disservice.
Highly skilled, great customer service and just plain easy to work with."

- Frank C.

"Only place that could duplicate the key I had."

- Jan M.

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