I’m inclined to agree with HH on the Taiwanese legislature. I wonder if an administration, however might be able to facilitate similar goals through bank regulatory means. For example, to discourage further construction financing, Taiwanese regulators might increase the amount of capital that a bank has to hold in reserve for each dollar of residential construction loans. In addition, the regulator could also establish concentration thresholds such that banks couldn’t have more than a certain percentage of their loans or capital in residential construction loans. These measures wouldn’t flat out prohibit residential construction lending but it could make it more difficult and expensive to obtain.
Of course, limiting the amount of construction financing might ultimately serve to limit the amount of new housing stock coming on to the market. And any time you limit new production of a resource, you make the existing resrource stock more valuable and expensive. This would have the impact of making housing more expensive, I think. That being said, I don’t what the “right” answer is in terms of inventing people to extract housing equity and invest it in more productive outcomes.
As a homeowner in the U.S., while I know the circumstances are different, I don’t know what kind of lure I would need to cash out some of my equity and invest it in a business or spend a lot of it on remodeling (which would improve business for contractors and suppliers). I was lucky enough to buy a home in a down cycle so I’ve built up a lot equity and have a comparatively cheap mortgage payment. No real incentive for me to tinker with that.