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The only show with an intro featuring a cross section of the house I know is the one from Bear in the Big Blue House.
The best character is always the one-shot disguise.No, it's not a cartoon. It's a family drama/sitcom. Once the inside of the house is visible, I think it pans in closer to a specific room or two as it begins the episode. Can't remember for certain but I think it's in color.
This show's opening credits showed a house that opened up into a cross section of the house - I remember it being something like The Family Affair or My Three Sons. I think it was a single father/daughter but can't be sure. Driving me crazy!