The date at the top of the building clearly says 1919 so there is date confirmation. The tramcar (looks like it is car 89?) built 1906/7 is turning into Dudley Road from Heath street of the 31 route which apparently was an infrequent service.. This was replace on 10/9/39 by bus route B83. Tram 89 was one of those stored for emergency use during WW2
The lower picture in post 3 is the oldest view I believe as it show an older style lamp post, the tram stop sign and the metal cabinet associated with the tramway overhead.
Phil's photo post 4 is summer 1939, before the abandonment of the Dudley Road routes in September 1939 but showing signs already of preparations for the imminent war. The white painted fender and what appears to be an APR or air raid poster on the traction pole. Two trams stops are in the photo, one opposite the tram the other in Dudley Road immediately before the junction with Heath Street.
The upper photo of post 3 is post war if the clothing is a guide. The tram tracks have gone, the traction poles and cabinet together with the tram stop plates are also gone.