Dan Phillips builds low income houses with families from salvaged materials. The houses are pretty cool and have a folk art vibe to them since a large part of the materials are reused. He started Phoenix Commotion which is a local building initiative.
I came across the following video through a suggestion on Youtube while watching a video on Texas Tiny Houses. The Dan Phillips video is from the 90s and not the best quality, but was pretty interesting when they showed the 2 story house he was building with a single mother and her payment was less than $200 a month and the loan was for 7 years!!!