My boyfriend and I discovered this very adorable 8 X 18' tiny house at a farmer's market on Whidbey Island a couple of weeks ago. The builder has built a couple of homes like this, using recycled native Douglas fir and all green building materials. It has a loft bedroom, a tiny living room, kitchen with mini fridge and electric cookstove, propane heat, bathroom with shower. It retails for around $60,000. It was built on a trailer but could be put into place with a 4-pin foundation.
Apparently it qualifies as a park model trailer/mobile home. Cute!