examining these maps really makes me realize i've been doing it wrong. i first though the outer walls of the bedroom were just really thick and connected to the inside, when they are really just paper thin, which is why you cannot see the inside of them when you clip through bedroom walls and look out (backfaces), which is completely unlike the 'bathroom' map which uses thick brushes where you can clip inside a huge empty house, and my tyler's house map which uses cleverly placed thick brushes.
i do not know how to flip faces in constructor or how to enable backface view, i am trying to find out though.