I think he just meant mansions and stuff like that.
And I don't really care about that.
A safe place where I can store my crap is enough.
Don't care much if it's a high-class apartment or a [censored] 1 room basemant rent-out.
The smaller, makeshift ones tend to be the most satisfying IMO, as I've said in another thread.
Although I don't think he meant mansions and stuff (which is what I initially thought too) because who refers to them as great houses? Anyway, I suppose you could call the Lucky 38 a 'great' house if this is the case.
But then again, suggesting Great Houses from the ES is pretty silly too.
OP, you really need to clarify.