Judging from the site of the stairs and the outside of the house, the stairs are up against the outside wall, so it's impossible for the kitchen to be any further back than that. Are there any scenes where we are actually inside the kitchen? I can't think of any.
While we're on this subject, I'm also confused as to which is Nora Batty's kitchen window and which is Compo's bedroom window. I always understood the window to the right of the door was Nora's kitchen,, seen in many episodes, but in Uncle of the Bride, it is this window Nora knocks on with her clothes prop to get Compo's attention to collect his parcel from the postwoman. And we've seen Compo lean out of the bedroom window many times too.
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