How do you stop house prices from going up? You can't put a cap on property values without turning bidding into a lottery and screwing owners out of asset appreciation. You could make it easier to afford expensive houses by increasing the money supply, but our interest rates have been pegged at effectively zero for four years. You could build more houses but that seems unlikely given the political climite in SF. Perhaps though you can geodiversify an industry, which actually this guy is doing by leaving SF. I'm not sure how you can regulate that though, except by capping the number of jobs in a given industry, kind of like with taxis.