I only looked at a few photos. Did I miss the No Trespassing signs? If the doors aren't locked and there aren't No Trespassing signs up then it's not breaking and entering or trespassing, is it?
If I lived closer, I'd have no problem walking in if a door was open anywhere on the building and there weren't No Trespassing signs up.
Now removing stuff might be another question.
-Nyle