What is Sherlock Holmes's address in 'The Adventures of Sherlock Holmes'?

Sherlock Holmes’s address in *The Adventures of Sherlock Holmes* is 221B Baker Street, London. The fictional apartment is where Holmes lives and works with Dr. John Watson, who records many of their investigations.

The address first appeared in *A Study in Scarlet* in 1887, before the stories collected in *The Adventures of Sherlock Holmes*. Doyle’s Holmes occupies rooms above a lodging house: Watson describes a first-floor study overlooking Baker Street, with the bedrooms arranged nearby. The setting became one of the most recognizable addresses in detective fiction.

There is an important real-world twist. When Doyle wrote the stories, Baker Street’s numbering did not extend as high as 221. The street was later extended, and real buildings eventually occupied the relevant block. The Sherlock Holmes Museum now presents a recreated 221B, although its building lies between actual street numbers 237 and 241.

Readers sometimes confuse 221B with 221A, but the “B” is part of Holmes’s canonical address. The number 221B is fictional within the original stories, even though the location has become a major London literary landmark.