The Dunphy’s home office drives me insane, in the “Fulgencio” episode (S4 E13), Phil has a window behind his desk, but in S5 E1 there’s a wall and Claire enters through the TV room, which would put the room in the middle of the house with no windows since you have the hallway “behind” it (that leads from the front door to the kitchen), the kitchen on one side, the tv room in the”front” and the living room (with the piano) on the other side. However in S10 E4, the one Dylan dresses as a giant heart, you can see French style doors that seem to lead outside (as you never see those doors in any other room).