Called Sunday to set up an appointment to have a combo lockset replaced. Andrew called back within…read morea couple of minutes and set a time for Monday afternoon. He showed up a little early and completed a high quality job in less than a half hour. Could not ask for a better service. Will use again if needed and recommend to friends.

Called with a lock issue around 8 pm hoping to get someone to come the next day. Steve was able to…read moreget to the house within the hour and fixed the problem quickly. Fast, efficient and courteous service - definitely recommend.

Mario was prompt, friendly, and solved problems with my lock I had suspected were there but didn't…read moreknow how to identify. He was very quick, and more than reasonable in terms of cost. I highly recommend him as trustworthy and very professional.

Im so glad I found MdM. Mario was very knowledgeable and detailed oriented. I look forward to…read morehaving him install my cameras and security system as well! Great value in having the security he can offer with his high quality locks and services.

I called Rick on recommendation. He was at my house within 20 minutes. Terrific work that was swift…read moreand well done.

Rick is the absolute best! He's helped me with house locks and most recently the lock to my truck's…read morespare tire! Great service and a great guy! Highly recommend

Darren is the BEST! I locked myself out AND had food in the oven (yes I was scared asf). Called…read moreDarren and he told me he could make it over in about 25 minutes. Indeed he did. He unlocked my door with ease and had me inside within seconds. I showed him my ID, paid him and he was on his way. Once again Darren thank you thank you. If you're locked out call him up. Also nothing burned in my oven

Prompt and excellency service replacing my door locks. Reasonable price. I highly recommend Darren.read more

Although their service area map on Yelp said we were within their service area, the man who…read moreanswered the phone said we too far away in PA.

Great customer service and nice variety of things you can't find at the big chain stores. Very…read morefriendly and knowledge staff. Felt great to support small business owners. Will be back again a.

He was able to replace our broken lock in South Philly under an hour from being contacted. Would…read morerecommend!

Adam was timely however, my lock were not 're-keyable'. I guess it is an odd situation. What was…read moreinitially thought to be a quick, fast and cheap project was longer time, only 1 lock was changed, and he left with one of the screen door locks. NBD because all locks have since been changed. Adam then went into action to help us figure out what locks we need at best cost and number of locks. I would recommend Adam, I would suggest taking as many pictures of your locks as possible so you can coordinate if it is possible or if you need a new lock all together

I went to buy a knife and he sold me a couple that had been abandoned. It was well sharpened. It's…read morea lovely place that does a great job. I thought the price was reasonable, and the people are very nice.. It's a little tough to find the driveway because you're actually going down the driveway between two buildings. If you miss it, just turn around and come back.

These guys are miracle workers! They took a branch lopper that's about 70 years old, that I…read moreinadvertently left sitting outside for more than a year (literally), and removed the rust, sharpened it, and it's nearly like new!

What a great old-school company -- truly care about their products and service! We needed a new…read moredoor lock (and keys cut for a hard to find older lock) and they provided excellent service at reasonable prices! Highly recommend!!

We bought a 130 year old house filled with 130 year old mortise locks. One of them wouldn't lock…read more Yearsley came right away and found a way to fix the lock even though original parts are non existent. I was very pleased and found the repair cost to be very reasonable!

I've used them for years for locks and our safe. Can't say enough good things about them!read more

I needed a new home re-keyed. I reached out to several well-reviewed local locksmiths via their…read morewebsite contact forms on a weekend so I could get an apples-to-apples comparison. Heard back from Great Valley before 9 AM Monday with a professional quote that was reasonable, so I chose them. On the day requested, the locksmith (Gene) arrived within the window and did the job promptly, expertly and pleasantly. So I am quite satisfied. Oh, the three other local locksmiths? Two never replied. The third apologized when they reached out two weeks later, after the service date.