Upon Several Viewings of Burn Notice

Throughout the school year, I have very little time to watch TV. As I explained to my parents, "A DVR is an investment in my education." Now that I am on holidays and actually have time to watch TV, all I want to do is re-watch Burn Notice.
Watching the entire series within a matter of weeks, I started to notice inconsistencies with the sets:

• From the exterior shots, Madeline Westen's house is clearly a large two story house. At one point, Madeline considers selling the house and shows a real estate agent the entrance to the stairs to a the second floor. By the next season, the door to the second floor suddenly is a closet. Madeline Westin's house is now a kitchen, living room and back porch with only exterior doors. Where does she sleep? Where does she go to the bathroom? Could explain why house guests always stay in the garage.


• Michael Westen's loft apartment has no interior doors so I'd assume he also has no bathroom.


• Mr Pyne (Ray Wise) and Jean Pierre Duman (James Black) live in the same house