This story could use a bit more context. It sounds like it's a response to a question we don't know. I understand that a shopping mall was built, someone noticed a storage space that was unused, managed to access it (was it unlocked?) and secretly turned it into an almost-livable home (no plumbing is a bit a problem, though). Managed to get away with it for 4 years, and then was caught, arrested and released.

So what happened after that? Was everything thrown out again? Did anyone find a use for that space? And how did you think you were going to get plumbing in there?