Bruce, the problem at hand is that you'd be seeing the inside-out brushes from elsewhere in the map.
Of course, this implies a deeper problem than that.
Why are you seeing brushes from behind
at all? You would never see something like this in real life; Architecture is never like that because the real world's geometry would otherwise be impossible. So if you have a case like the one in your screenshot, it would be a case of an incomplete map where the things you should be seeing through the windows (i.e the other side of the building/wall) are missing. So don't be lazy and map the place properly, either make a proper construction there or eliminate the windows, because as it is,
it doesn't make sense.
You'll see how things start looking so much more natural when you add things that are not necessarily the level geometry directly relevant to the spaces you are navigating. Places you can't really access but still can see parts of such as having a patio or a garden there, or distant buildings behind the directly visible buildings add a lot of depth to a map. (see
Altdel by Archie for example)