I just finished the floor plan of 221B Baker Street of BBC’s Sherlock. This floor plan is only based on all 6 episodes. Some details are still unconfirmed as we’ve never seen those from the show. E.g. Sherlock’s bathroom, John’s room (is supposed to be on 2/F), Mrs. Hudson’s room. And that window at the staircase, I still have no clue what’s outside the window.
So this floor plan is just a very simple one. Perhaps we can get more glimpse of different parts of 221B in S3.