The whole reason why there's an explosion in housing prices in Sunnyvale is because of that UFO that's parked in the middle of the city known as Apple HQ. Same real estate explosion happened to Palo Alto when Google became big, and to Menlo Park when Facebook became public.
I live in Sunnyvale, and the houses here are pretty shitty imho. They are some of the older houses in the South Bay and Peninsula, but they are being remodeled to look decent. They still maintain their awful structure.
To be frank, I just think people in the Bay don't like to drive and there's so much money being made by high level employees they don't mind paying these prices just to be able to drive five blocks to work with their Tesla vehicles. That's another thing, there's so many fucking Teslas here.