just to take this chance to explain about accessing abandoned buildings.
abandoned buildings are fenced off mainly because
1. structures are not certified safe for inhabitation. people may get injured by collapsing/exposed structures.
2. safeguarding structures gazetted for conservation/preservation. we've seen permanent destructions done to some conserved buildings awaiting plans for refurbishment. such destructions may include permanent loss of valuable information/details w.r.t. conservation/preservation.
there are those who treat these premises with care and respect, there are also those who rampantly vandalise these sites. trespassing these premises is against the law, and we do not want this forum to become a platform for discussing such activities. it's always best to keep photography activity limited to outside of the stated boundaries.