Cool, we get a player to mess with.
I think that the fire escape is your fault, Meph.
You said how the store below was a jewelry store, and I don't think a jewelry store(or any where else for that matter), would give a random person off the street access to their roof.
In fact, stairs just seem excessive for anywhere.
If these are normal, we don't have to care about everyone and fear lawsuits people, there would more likely just be a ladder down the side of the building with a cage around the bottom.