You may want to try to contact Mike Reynolds, who is best known for building self-sufficient houses called Earthships by using refuse (rammed-earth tires, plastic bottles, etc.) as a structural component.
He took a team to places hard-hit by the 2004 tsunami and worked with the local people to design and build houses out of whatever was available[0]. He appears to be good at figuring out how to build homes that are suited to their environment given the materials at hand. For example, he saw that lack of clean drinking water was as big a problem for the islands hit by the tsunami as the lack of real housing, so he incorporated rainwater catchments and cisterns into the structure of the single-family structure he designed with the islanders.
I think his talents would be well-suited to a disaster situation where there is a need for fast, cheap housing, and it seems he has the heart for it as well. I bet we could crowd-fund his travel costs if he's willing to go and there's a need for that. There is a contact page with a phone number on the earthship website[1].
[0]https://www.youtube.com/watch?v=49oE6nbwz8E
[1]http://earthship.com/home/contact-us