A lot of ifs and maybes but it would be somewhat cheaper to send in prefabs. A little less labour cost in erecting but still require tradesmen for all the other work. There is no reason that lumber couldn't be manufactured on site in many cases. DOes require motivation though as well as a few experienced people to make it work. Petros , I think it was posted some pics a bunch of pages back that showed a panabode style with two layers of walls with insulation inbetween. This style could be manufactured in many locations. Again there is still the foundation and all the mechanical to consider. All this stuff does have to be freighted in.
Motivation does seem to be the big problem. I think the native leaders like the system in place now where BIG BROTHER supplies everything and all they have to do is fill out applications. I'm not convinced that the leadership wants the rank and file to have real jobs.
So it is economically feasible then? Some Bands would have no problem with volunteers- same with providing those with the skill sets if required.
Habitat for Humanity has what they call sweat equity- each family must work 500 hrs on the house or projects.
No difference here.