Dunno if it would help but I've been adding loads of textures to the freebies and some are old bricks, roof tiles, brick air vents etc etc, may come in handy.

I can take some pics of the actual buildings if you like there are some interesting turret-like mini towers on the roofs.  Some of the buildings are quite old, I'll have to check up on the actual age.

Measure your mind's height
by the shade it casts.
Robert Browning (Paracelsus)

Fran's Freestuff

http://franontheedge.blogspot.com/

http://www.FranOnTheEdge.com