The Brownstone is a house located in New York City at 42 Stanford Avenue, Brooklyn, New York, 11209. It is owned by Sherlock Holmes' father, and is home to Sherlock and Joan Watson, although Joan is only living there until she can find another suitable apartment.
The house consists of at least four floors, including a basement, and a terrace on the roof. The roof has a view of Queensboro Bridge and Manhattan, and is also where Sherlock keeps his bees.
Although the brownstone is in Brooklyn on the show, the outside of the building is shot in Harlem, New York City, with interiors shot at Silvercup Studios in Queens. The roof is a real rooftop in New York City and is located on a parking garage at the corner of 10th St & 44th Av.