Mul-T-Lock Lock Installation in New York City

Mul-T-Lock offers a wide range of locks for residential and commercial properties. With a variety of deadbolts, cylinders, and key systems available, we are confident our locksmiths can install the best possible lock system for your home or office space. Additionally, we can create additional keys for your lock system at any time from our headquarters in Manhattan, ensuring access is always available. Paragon Security is the leading Mul-T-Lock installer in New York City.
The Mul-T-Lock Advantage

We like Mul-T-Lock locks for their durability and reliability. As trusted Mul-T-Lock installers, Paragon Security regularly utilizes Mul-T-Lock products in custom security solutions for commercial and residential properties across New York City. Contact us today to discuss your specific lock needs and figure out the best possible lock solution for your property.
Paragon Security proudly serves customers throughout New York, including Manhattan, Brooklyn, Queens, the Bronx, and in New Jersey including Jersey City, Hoboken, and Weehawken.
Case Study

Paragon Security received a call to install a new lock system for a residential storage facility. The door needed to be accessible to residents and staff, however also needed to be locked at all times for safety purposes. Our locksmith furnished and installed a brand new Mul-T-Lock cylinder and top guard plate, a Segal slam lock, and a Legacy door sweep to ensure the door is sealed for safety.
Why Choose Paragon Security & Locksmith?
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Customer Service-FocusedWe prioritize quality service and craftmanship. Get peace of mind when you work with us.
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Licensed & InsuredYou can rest assured that our team is licensed, insured, and thoroughly vetted.
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Get a Free Quote
We make it easy to get started with a completely free quote.
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Emergency Service Available 24/7
Count on us to provide quick and dependable locksmith services.
Our Reviews
Proven Results, Happy Customers – See Why NYC Trusts Us
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"Highly recommend!"We had an emergency when the handle on our living room French doors broke and the doors wouldn't stay closed. We called Paragon, and Michael came over immediately, quickly diagnosed the problem, and spent several hours carefully adjusting the mechanism so the doors worked properly again. Without his help, it could have been a real disaster. We're incredibly grateful for his prompt, kind, smart, and truly professional work - highly recommend!- Barbara R.
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"I have nothing but praise for Paragon"I have nothing but praise for Paragon. My apartment intercom handset hasn’t worked for a long time. My neighbor’s handset was replaced by Paragon and she recommended I call. Within a couple of days my inoperative equipment was replaced by a wonderful, timely, considerate young man who explained that the system is soon to be obsolete and I was just in time as the current equipment is not being made. I’m hoping my building considers Paragon to install a new system to bring us into the 21st century. Thank you for your excellent service.- Gail S.
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"Neighborhood gem!"So convenient and friendly! Needed to get an extra key made today - it was a Mul-T-Lock so a little more complicated. It was incredibly fast and Will at the counter was especially nice and told me about their Tuesday “happy hour” on key cutting - 20% off. Our building uses Paragon for all our building’s keys. They also installed and fixed an electronic keypad for our front door and took the time to do it right. Neighborhood gem!- Kathy P.
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"A flawless experience"We recently had two camera technicians working in our building Flavio and Adrian, their service was truly outstanding. From the very beginning, they demonstrated a high level of professionalism, punctuality, and technical expertise. They explained each step clearly, worked carefully around the building, and made sure everything was functioning perfectly before finishing. In addition to their excellent work, they were extremely friendly and respectful with all the residents and building staff, which made the experience even better. Their dedication and positive attitude really stood out. Highly recommended for their professionalism and exceptional customer service. A flawless experience- Carlos M.
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"Highly recommend Paragon"Gal was very professional and got us back on track. Highly recommend Paragon- Roland M.
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"My door is 100% better"The gentleman of Paragon were polite & considerate. They called ahead with a time update & also showed up on time. The clean up done afterwards was much appreciated.- Maryann D.
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"Their diagnostic skills are very good"They can be trusted to do what they say they are going to do and their diagnostic skills are very good.- Raphael S.
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"Super efficient and very kind"After having an issue with our door for over a week, he fixed it in under an hour. Thanks so much!- Izzy M.