All home made. The church and small building in the town are old ones made of mounting card and thinner card. The inn is a much newer building made from MDF with balsa wood timber framing and 'bricks'; and uses applique doors, windows, etc. by War Bases; with the usual thin card 'tile' roof. The WB bits have been a god send as they decrease building time by half and give the buildings a much more 'commercially produced' look.
BTW, the rough wall finish is obtained using a tube of heavy body artists acrylic paint - it doesn't 'flake' like plaster filler can, it sticks like s**t.
A few of the newer ones with WB bits:
The inn

A forge

A small cottage

Just boxes with bits stuck on.