Another blog with detailed construction pics for a tiny trailer house.
Vagabode: Step-By-Step
Something like this is realistically too small for me and my wife. If I were single, I could live in one quite happily. For the two of us, something more like a very small house would be better. Although she, I, and our baby lived in that campervan for months w/o issues, but we were 17 years younger too.
Still, I think it is cool to see people doing it.