Are there any sources / links you can share on cash real estate purchases in SV or Bay Area? I'm interested in reading more about this and a preliminary search isn't yielding any recent news.

This sort of data would be interesting/ useful for any location. I was recently in Phuket where I was told property prices are dropping due to the Russian currency tanking, so many of the Russian owners are selling up. Knowing how much of an area is owned by certain foreigners would definitely be valuable knowledge.