Hi,
Floor plans, yes they are a bit mysterious. They are done loosely as a reference only to guide the storyboard artists to stage the action. Because of the scripts, we sometimes had to cheat and add a door or a room that's is not suppose to be there. We try to stay accurate with the existing designs. The houses in Elwood City were done based on a series of photographs taken in a small town in New England. The Arthur's house exterior and interiors are based on the house of the creator of the original books serie, the one and only Mark Brown.The size of a particular room for instance in a floor plan do not really matter since when the storyboard panel is done we need to add a tv cut off plus a safe paint to allow a security margin for the characters posing. Like in a movie set we need to be able to pan or to zoom out the camera freely.
P.B.