we'll never print ALL houses.
But there are a number of machines around now and it is getting a lot more common.
The chinese, particularly, are pushing the technology.

It's also going to be useful for the increasing number of migrant 'towns' as well as for disaster relief.
Cheap housing is also going to be a good use for the technology.

Modular housing is probably where the future lies as far as the building industry goes.
Basically large, cleverly shaped bricks that go together like lego.
https://www.youtube.com/results?sear...rinting+houses
Quite a few there.
You'll see that primarily there are concentrating on small low budget dwellings.

For larger houses, it's the individual components and building blocks that can be printed to produce a 3d jigsaw style modular house.