The out-sized &quot;demand&quot; is largely coming from yield hungry investors and Chinese investors looking for a bolthole.<p>Both kinds of demand could easily be clamped down upon by raising property taxes - the victims of which would be wealthy foreign investors and people who have sat on one of the largest increase in property values in history.<p>Likewise, supply could be increased if local government were at all interested in doing so just by building 10,000-20,000 low income apartments.<p>If the government announced both, the cost of San Francisco housing would plummet within days.