According to South African commenters (or at least ones who claim to be South African) when this was posted on the Guardian, not all of the photos are of white-only, or even of mainly white, neighbourhoods. In several of them, the “nicer” half is a predominantly Black middle-class area.
On the photographer’s website, the caption to the penultimate photo in the BB post says that the neater area on the right, Vukuzenzele, is actually a government-funded affordable housing project.