As long as there's a California, there will be an ever increasing demand for housing. There are enough of them(California retirees in particular) to support what we call expensive housing of almost any size and type. They see housing here as cheap(by comparison). Then there are the "climate refugees" who will come here from all over as climate change progresses.  Nothing says it's going to be pretty or well-managed. Some of the proposed plans(for handling the increased traffic ) are down right nuts.