This is pretty much the inevitable result of government trying to "force" demand to be want it wants: Demand doesn't change but supply and price do.

A LOT of people simply WANT to live in a detached home, and no matter what government policy is put in place people are still going to want that.   So if government puts in place rules that make building detached homes difficult all it will do is dry up supply and raise prices.

The real take-away here: The *EXACT SAME THING* is going to happen with the newly announced rent control.  People who want apartments are still going to want apartments, but by trying to force down rent all that will happen is new supply will dry up and developers will build something else.  Lower supply means one thing and one thing only: higher prices.

This is just one of many cases where government intervention has the exact opposite effect of what the government WANTS their action to accomplish.