I like your idea but it seems just a bit unbalanced to me. I also don't care for the use of the sepia/duotones, I think if the bricks are actually brick red color it would have made it more interesting
I think it would've been interesting to make a shot of the building on the left only. The eyes are directed towards the fine building in the background so it doesn't leave the impression it is poor street indeed. The building on the left with its texture, old windows, etc. is just perfect for the challenge topic. I like duotone here as it makes the texture of the wall stronger. 7 for me.
Edited: Building on the right for God's sake.... Sorry for the mistake and congratulations with your top 50 placement.
I like this one. The lines on the wall taking most of hte image has a really closed-in feeling. I feel that is appropriate for the challenge. But I think mostly I just like it. (8)