I believe that we eventually will have a reliable and cheap way of making durable houses, maybe 3D printing. There are machines capable of doing so now, its just a matter of refining and provide them with enough availability

The main issues I see are:

Construction is a low skill labor intensive source of jobs, so unions and government don't want to cut it. And a more efficient way of building will probably mean less people working.

Most people loves being showing off, a huge house is the best way of showing how much money and power you have. Why print this wall when you could buy some expensive material?