After attending AIA's "New Edge/New Blood" Exhibit last night http://www.aiaseattle.org/new_edge , I was particularly struck by Grey's Design for both his "sheds" and his gorgeous resin chandeliers http://www.greydesignstudio.com/lighting/large/large_1.htm . (top picture)
Of course a craigslist home wouldn't be complete without urban agriculture....maybe we could partner with http://www.alleycatacres.com/ ?
We are also inspired by David Sparti's house built on a backyard lot in the Central District (he the backyard for $35k) and built the whole house for $200k (including land). It is 800 square feet (which would be a mansion in comparison to our current living situation!). http://www.smallhousestyle.com/2008/03/09/seattle-sarti-small-house/ (bottom picture)