This picture is hurting for some kind of focal point. You could've PS'ed something into one of the windows to give it something. It's not quite sharp and also it's just too drab. - Inspzil
The light is good and I like the pattern of repeating windows, and the sky reflections in them, however, this photo is not all that high impact for me. I find the tiny bit of sky at the upper right corner to be a little distracting.
I see what you were trying for here, and the composition here is really effective. I think, thought, that the colours could be more interesting with some tweaking. It also seems like you used a little too much compression.
although the windows are wonderful and seem to be spotless!!, this picture just needs something. Maybe some color and an interesting focal point. Just my opinion, take it with a grain of salt:)
I like the reflection of the sky in the windows. I think I would have not included the blue in the upper right hand corner. The focus seems a little bit too soft. I would have liked to see more detail in the bricks. Good work and good luck.