I have always had the same types of dreams, except I grew up in apartment buildings, so I have dreams about apartment buildings with strange passageways, rooms in odd places, elevators going sideways instead of vertically, etc. Like yours, everything is MC-Escherish. They are usually recurring-type dreams, where in the dream everything is familiar and I know exactly where to go. It seems like the house/building might represent the mind, which often works in strange, convoluted ways.

I'm sorry you have lots of anxiety dreams, though.