Mate
I agree with Toms first crop of the image, the extent of foreground is distracting. The post worked image really adds a lot in my opinion! Though I think you have dirted up the front of the building on the left a little too much.
For me the carpark pavement in the post image looks great now, though as mentioned the lines may have been a little less white.
For me the real biggy is the lack of any light from the windows which would be present in a late afternoon shot.
The dark line to the image as Tom mentions created by the shadow cast from the line of trees I feel could be broken by not maintaining such a harsh line to the layout of the trees.
Now all in all considering the size of this project and the extent of the parking / mapping there this is superbe work mate, you should be really proud!!