I've been looking at the 100K house project lately. The idea is pretty interesting: build an approximately 1000 square foot green home in Phillie for a hundred thousand dollars in construction costs. It satisfies both my love of green building and penchent for round numbers. Unfortunately it's as misleading as the initial description of the Titanic as "unsinkable".
The hundred grand only covers the construction costs, the land, permits, architect etc. is extra. It makes for a bit of a disconnect when you try to sell the 100K house for about two and a half times the price.
Check it out: