I like the Beldam Asbestos Co. Asbestos, it's the building material of the future!
You should see the North East of England, the deterioration even since I've been here is sad to see.
I work in a Conservation Area which is all old Victorian streets. Some of the buildings have amazing details once you look past the boards, scaffolding and hoardings.
There are also loads of derelict Victorian terraces awaiting clearance. I really should get some photos before they go as they are spot on for UK post apoc.