http://homes.yahoo.com/blogs/spaces/learn-ultra-narrow-house-just-12-feet-wide-172246365.html
Not for me. I don't like having to climb that many stairs to get to different rooms. I live top level of a three storey, but I only have to go up and down the stairs to do laundry, leave, come back, and grocery shop. I'm too old and decrepit for this place, though it does look kind of neat.