The sky is a large detraction from the overall. The tone attempts to elicit dispair_which is good for the image, good details. Maybe a little cropping off the top and the white building side would do the trick for me.
Boy there are some serious add on's to that building. I like this image very much. Partly because it 's unusual nature... I also like your use of the sepia tone...although I do think it may be just as powerful if you went with the B&W version as I think there would some nice whites and rich black to enjoy..8 lots of luck with this one.