Is there any chance of getting a hold of floorplans of particular movie sets? If so, where/who would you contact about getting a hold of them? Are they free?

Pretty much I'm clueless about the whole process of getting a hold of them, if infact it's possible.

Any ideas?

PS: I'm more specifically (right now, at least, though if discoevered how to get a hold of them I would probably hunt down tons more) after the floorplans of the Nitta Okiya from the movie 'Memoirs of a Geisha'.