Thanks for the feedback on the frontages. If you have any other comments feel free to post them here or in the frontages own thread here:
http://leadadventureforum.com/index.php?topic=10047.0Meanwhile, back at the workbench, work has continued for the layout.
Here is an office block:

Front.

Rear.

Lift off first storey & roof.
Once again I've gone for a fairly generic look, designed to be an anonymous grey concrete office block seen the world over. (I can just see John Rambo on the roof, blasting everything in sight with his M60!)
I decided to build a bit of an interior, mainly on the ground floor, with a simplistic upper storey.
I intend to make a seperate access door onto the roof which I can add as required.
This was built from PVC foam, very similar to the factory/industrial building.
I will probably glaze all the window openings once I've painted it.