The original station building is located approximately 170m south of the existing station and can be accessed from South Hill Avenue. It is similar to the building still in use at North Ealing and remains, adjacent to the eastbound platform, in the car park on the north side of the tracks. Today it is used by London Underground as office space for drivers before and after stabling trains in the sidings and driver shift changes. On 5 July 1935, a new station was opened accessed from Northolt Road. The new station building was designed by Charles Holden as a graduated structure stepping up on each side to the platforms of the high level tracks. The brick walls and bands of horizontal glazing are capped with a series of flat concrete slab roofs.