Agree with Col.Burton, perhaps if it was less boxy it was nicer. Personally I don't like it anyway... Here are 4 reasons:
¤ Boxy.
¤ Grayscale.
¤ Stairs.
¤ Color
Seriously now, as i know most of the BUILDINGS (The big ones, 6 story or more) use that color, even those can use other colors...
I suggest you use another color for it.
Also the stairs are really ugly.
Nothing else to say here...
Also a overall: 2/10, but since you don't really build often and/or you are new I will give you a 4/10.