This pic was taken by Robaire's father and the loose negative was scanned on an Epson V700.
The location of the house has been discussed with his older brother Maximus and the best guess is about 1930 and possibly at Cobbitty, an early development southwest of Sydney.
Although now absorbed by greater Sydney, this sort of building is certainly reminiscent of the area as we recall from our youth.
Sibling Minimus has now stated that he has NEVER seen that sort of tile and some trees in the background do not look like gum trees, native to OZ. He feels the seen is more English. Robaire is exhausted by thus sibling oneupmanship and retires therefrom.