According to definition 1 in this dictionary for the verb "bar":
to put a bar or a set of bars in front of a door, window, etc., so that people cannot go in or out of it
So, "bar" should be used with "window", "door", etc, but no the entire building structures. But then there is this:
THE European Union has never seen the like of the past eight days in Greece: barred banks, capital controls, the first IMF default by a developed country, the collapse of a multi-billion-euro bail-out, plans for a referendum that may hasten Greece’s ejection from the single currency, and the beggary of the people.
Is "barred banks" an error? Would "banks with barred doors" be better?