> The first solution that comes to mind is to legislate that certain pieces of property must be the legal primary residence of the owner. I am not sure I under

> The first solution that comes to mind is to legislate that certain pieces of property must be the legal primary residence of the owner. I am not sure I understand this solution. Are you saying that San Francisco's housing problems are not caused by demand that far outstrips supply? This proposal would just mean that prices stay high, but more people buy instead of rent.