What a great experience. Our front door lock was acting up and I finally needed to do something…read more After reading Yelp reviews, I called Chelmsford Lock, Mike picked up right away, and was able to stop by later that afternoon to take a look. He quickly diagnosed the problem, called his supplier for the part and said he could be back to the next day to do the install. He said he would call with an ETA, which he did (it's amazing how often contractors SAY they will do something and don't), arrived right on time and quickly made the fix, with a really nice attention to detail to make sure everything was perfect. I really appreciate Mike's professionalism and attention to detail - makes me wish I had more problem locks!

Michael was professional, arrived on time, solve the problems, and did so well being very…read morereasonably priced. I would not hesitate to recommend him for any lock issues whether personal or in business.

I had them re-core some doors 7 months ago…read more for 7 months the door upstairs in my storage area worked fine. Suddenly it stopped working in August. I called and they came out the next day. No charge. They Said "we did the work. So no big deal it's covered.". Then the guy came out and found out it was not their work. it was weather stripping my roommate put in a couple years ago. They did not charge me. The only word I can use to describe these guys is "integrity."

Post Office Locksmith was able to come the same day I called and worked around my schedule to fix…read moremy lock. We thought that we needed a new deadbolt, but Jim, the lock technician, saw that we only needed to lubricate the latch. Not only did he save us an expense, he also fixed the hinge on our screen door. I'm only sorry that I didn't have more cash to tip him! Would definitely recommend if you need a locksmith in the Merrimack Valley area.

Excellent service!!! Fast and very reasonable. He had to come back out because the building…read moremanager wasn't clear on how many locks to change and did not charge another service fee! Great guy.

Fast response- next day service and replaced all the locks in my house with one single key! So…read moreconvenient.

Stopped in yesterday from suggestion from Anthony at Cowgills to see if they could help me with…read more"tiny" screws that were needed for my son's automatic car starter key. The woman who helped me (I forget her name?) spent a lot of time with tiny screws and did not charge me anything!! Thank you!!

If you have a classic car, Mike is the guy to see for your lock-and-key needs. It's hard to find…read morepeople who are really lock experts. Knowledgeable and fair, easy to do business with. It's a busy little shop, so don't expect them to always drop everything to fix your item on the spot. Yes, they can make a key or program a newer car key fob, but more complex requests may not be instant.

Bulent was upfront on his pricing, communicative, fast and did exactly what he said he was going to…read moredo. We would work with him again.

Needed a car key replaced last minute on a weekend. Called around and they were the only ones who…read morecould come out same day. He had the right equipment with him to cut and program the key on site, no need to tow the car anywhere.

Nothing but positives here!…read more Needed a fob for a new-to-us Civic and sent the word via Yelp's messaging ... Mati responded right away, came to the house, and did the work quickly for a fair price. Side note: I couldn't open the fob that came with the car because of a stripped screw. Mati tried for measurable minutes at no extra charge! And thanks to his effort, I did manage to get it open later on. Nice guy besides. Will definitely call again if/as the need arises!

Mattie was great. Very communicative as we set an appointment, on time and great price. Explained…read morewhat he had to do to rekey the locks and set expectations (which he exceeded).

Never responded after initial contact. Sean said he would call me after I sent my questions and…read morenever did. Didn't answer any of my questions I sent except they could do the work. I needed to know more about the company. I guess business is good don't need any new customers. Thats ok i moved on after looking at their reviews on line. mixed reviews to say the least.

Excellent experience. Helped guide me on what locks I needed for a home we just moved into. Ordered…read moreparts I needed. Great experience!