Time for Architecture 101.
See the doorway on the second floor? People can hit inside (INSIDE) your second floor room(s) at all locations from that doorway thanks to the nice walls you put there. You basically reduced your potentially inpenetrable 18x18 plot to a 16x16 first floor, 7x13 second and third floor. And thanks to good house-pk'ers, with that 7 length, your ass is gonna get hit by those *metro* storms.
Anyway, in all, learn what spells do. Learn how to use your house's mechanics. And learn that UOG is NOT a good place to macro a trammy char.