I wonder if all those mobile homes that are owned by the people in PA are the same brand name?
This popped up from my overused memory bank but I remember a long time ago that mobile homes from the same manufacturer all had the same key/locks. One key would open all home made from the same company. also, remembering when looking at mobile homes the guy opening it would have one master key to open all.
I then thought I would google it, still reading on it but this person supposedly works in the mobile home industry and posted this:
"Another thing that isn't so well-known: if you do purchase the house, change your locks. Most manufacturers use the same key lock for every house that they build. This makes it easy for them to manufacture and it helps dealer be able to get in and out of the home during the construction process. This way, we don't have to fiddle around with keys. A lot of people don't know this. And I can guarantee that I can probably get into the homes of about 80% of my customers because they do not change the locks.