Although Baker Street did exist in Conon Doyle's time, he created number B. In , when Upper Baker Street was re-organised to. At the centre of the stories is the address of b Baker Street, Sherlock Holmes's address. But does this address still exist or which address was it based upon?. Baker Street always has existed. But At the time the Holmes stories were published, addresses in Baker Street did not go as high as Baker Street was later.