Rock Solid Locksmith & Security Solutions Since 1981
Trusted Locksmiths. Family-Owned.
For more than four decades, Granite Lock has been helping homeowners, businesses, and property managers protect what matters most. Located in the City of Presidents and the city known for its granite quarries, we are a family-owned, bonded, and insured full-service locksmith company proudly serving the Greater Boston area and surrounding communities with dependable security solutions and personalized customer service.
Our story began long before Granite Lock officially opened its doors. In 1958, Dick started his locksmith career at Granite City Hardware, building the knowledge, craftsmanship, and reputation that would become the foundation of our company. In 1981, he and his son Rick established Granite Lock, combining decades of experience with a commitment to honest service and quality workmanship. Today, our experienced technicians continue that tradition while embracing the latest advances in locksmith technology.
As security technology has evolved, so have we. Granite Lock continually invests in state-of-the-art computerized key-cutting equipment, automotive transponder key programming, and modern mechanical and electronic locking systems. This allows us to provide accurate, efficient, and reliable solutions for today’s residential, commercial, and automotive security needs.
Complete Locksmith & Security Solutions
Residential Locksmith
Secure your home with lock installation, rekeying, repairs, key duplication, decorative hardware, and home security upgrades.
Commercial Locksmith
Protect your business with master key systems, commercial hardware, access solutions, lock repairs, and rekeying services.
Safes
We sell, install, service, and repair burglary and fire safes to help protect your valuables and important documents.
Automotive Locksmith
Our skilled technicians are trained to work with a wide range of automotive lock systems, from traditional mechanical locks.
"Family owned & operated"
"45 years of experience and counting"
"Family owned & operated"
"45 years of experience and counting"
Member Of
Massachusetts Locksmiths Association #460
Associated Locksmiths of America #43061
Safe & Vault Technicians Association #SR12270
Member of South Shore Chamber of Commerce
Licenses
Massachusetts Systems Technicians License #28D
Massachusetts Systems Contractor License #7025-C
Massachusetts Department of Public Safety License #951
Advanced Technology. Better Security.
Trusted by Homeowners & Businesses
Why Choose Granite Lock?
For more than four decades, Granite Lock has helped homeowners, businesses, and property managers secure what matters most.
- Family owned & operated
- Bonded & Insured Professionals
- 45+ Years of Experience
- Expert Lock Rekeying & Repairs
- Honest, reliable, trustworthy team
- High-quality tools, professional equipment
Meet the Team
Frequently Asked Locksmith Questions
Yes. We help with home, business, automotive, and safe-related locksmith needs, including key duplication, lock repair, rekeying, hardware installation, and safe service.
Yes. Granite Lock Co. is based in Quincy, MA, and serves the Greater Boston and South Shore area from our Southern Artery location.
Yes. Our team can walk you through practical options based on your door, security needs, budget, and how the lock will be used day to day.
Yes. We install the locks, hardware, and security products we provide so customers have one accountable team from selection through installation.
We aim to explain service rates, likely parts, and available options as clearly as possible before work starts so customers can make informed decisions.
When repair is a safe and reliable option, we’ll discuss it. In many cases, rekeying or repairing existing hardware can be more practical than full replacement.
Yes, we cut many automotive keys, including high-security keys, but some vehicles may require specific programming or dealer-level equipment. We will clarify what we can do before moving forward.
Our technician will assess the issue, explain the recommended solution, answer questions, and complete the work as efficiently and neatly as possible.
Granite Lock Co., Inc. is a family-owned, bonded, and insured full-service locksmith company that has been delivering “rock solid security” to customers since 1981. With decades of experience, we specialize in automotive, residential, and commercial locksmith solutions, combining traditional expertise with modern technology to meet all your security needs.
We are proudly based in Quincy, Massachusetts, serving the Greater Boston area and surrounding communities.
Our services extend throughout the Greater Boston area and its neighboring communities, providing trusted locksmith solutions to both urban and suburban customers.
We offer a wide range of security products including high-security automotive keys, decorative hardware, burglary and fire safes, and comprehensive lock systems for homes and businesses. Our showroom features display mounts and numerous safety and security-related products tailored to your needs.
To receive a personalized quote, simply call us at 617-472-2177 during business hours. Our knowledgeable staff will be happy to discuss your requirements and provide an accurate estimate.
We offer prompt emergency service during regular business hours. Please call us to schedule an appointment or get assistance when you need it.
Our expert services include key duplication, lock repairs and rekeying, installation of locks and security hardware, automotive key programming, and safe sales, servicing, and repairs. Whether residential, commercial, or automotive, we handle all locksmith needs with professionalism and precision.
Yes, we provide emergency locksmith services during business hours and respond promptly to assist you.
Absolutely. We specialize in comprehensive security solutions for both residential properties and all types of businesses, big or small, ensuring your home or workplace is fully protected.
Mobile service brings the shop to your home—on-site rekeying, lock repair, upgrades, and new hardware installation (including Arrow, Schlage, Emtek, Baldwin), plus key cutting with vehicle-mounted machines and hardware updates like satin nickel or oil-rubbed bronze. Walk-in/in-shop support covers rekeying, key repair, precise duplication, and keys cut by code, and it’s designed to assist homeowners as well as building maintenance personnel.
Rekey when you want to keep your existing hardware but change which keys work—ideal after moving or if keys are lost; it’s faster and more affordable than replacement and immediately renders old keys useless. Replace when hardware is worn, damaged (e.g., after a break-in), jamming, or when you want an upgrade in security, style, or function—Granite Lock installs new locks on any door, offers precise door knob installation, and can recommend targeted high-security or decorative upgrades.
Yes. Many older homes have 80+ year-old locks that Granite Lock can often repair or replace. They specialize in mortise lock retrofits using door-clamping equipment and a high-speed router to prepare the door, enabling repair or installation of high-quality mortise locks on both old and new doors.
Yes. Their emergency locksmith team is ready for urgent residential needs, including prompt break-in repairs or replacements. For home safes, technicians use non-destructive opening methods and can assist with code resets or lock swaps. They also provide legally compliant eviction lockout services for landlords and property managers.
Granite Lock offers full commercial support: access control (card systems), electric strikes, ADA/handicap door openers, exit hardware, door closers, removable core systems, master and high-security restricted key systems, aluminum storefront and lever hardware, and commercial mailboxes. In-shop services include rekeying, key repair, key duplication, and keys cut by code for desks and cabinets.
Phony and Copy Cat Locksmith Scams Are Taking Place Locally
This has been posted to you to inform you of a serious situation that is taking place in the locksmith industry. Currently there are certain individuals who are placing hundreds of thousands of phone numbers with fake business addresses in the local yellow page books across the country to make customers think that they are legitimate local locksmiths. There have been thousands of victims across the country that have fallen for these scams. You need to protect yourself! The phony locksmith phone numbers ring back to deceptive boiler rooms in which customers are quoted very low prices. Then, they are deceived with bills much higher than their original quotes and in some cases, 10 to 15 times higher! In addition to the deceptive phone numbers, there are also copy cat locksmiths who are running ads using similar names of established locksmiths, hoping customers will think they are calling the real locksmith. You must be very careful that you are working with the original locksmith and check to see that the locksmith working with you has the appropriate credentials. You can protect yourself by working with a legal locksmith, such as the one who provided you with this information.