Lovely models but it is worth bearing in mind that brutalism was:
1) Always a minority architectural form, even in its heyday and confined largely to large public buildings in major urban centres.
2) Much more popular* in Anglo-Saxon markets, particularly the UK where it originated. There are examples in Western Europe but it never quite caught on to the same degree. Its resemblance to all those concrete bunkers and Atlantic Wall defences was probably a bit off-putting. Other modernist styles both pre-dating and post-dating it were more popular. Probably the two most famous examples of brutalist architecture in the former West Germany were the Mausbunker (a bizarre looking animal research laboratory in West Berlin) and the truly unspeakable Maria, Königin des Friedens church in Neviges, Westphalia.
Certainly buildings of the type are useable if you are planning on investing Frankfurt but you won't find much evidence of them if you are planning on fighting in the villages and towns of the North German Plain or the Fulda Gap for that matter.
Scotia did a small range of 1/300 buildings IIRC.
Timecast do a large range of suitable 1/300 buildings:
http://www.timecastmodels.co.uk/range_3/range_3.htmlNaturally enough you can get a lot of 1/300 resin prints via printers on Etsy, Alibaba etc but
you can also look for Z scale buildings. These are nominally 1/220 scale but many will work convincingly with 6mm figures. Noch, the German model railroad manufacturer makes ideally suited items for German rural settings in this scale.
If you do want to do major urban settings then you'll find quite a bit of useful stuff with Outland's Z scale range, including battle damaged buildings.
* Popular being a relative term. It was widely reviled in its day and still is to a large extent.
