The next model to be released in 20mm is the kind of apartment block or "Mietskaserne" that can be found all over Germany from the 60's and is ideal for making your cold war towns out of. It is three floors with a cellar level implied on the ground windows.
This is a 5 peice model, front, sides, rear and roof and requires assembly. It measures 230mm x 120mm x 95mm.
Price is £15 each + P&P