Long story short, I was browsing architectural competitions and found an interesting one for the Ashanti Region of Ghana http://www.nkafoundation.org/competitions.html . As I pondered what I would design there (maybe enter the competition if I can find some time?) I thought it would be interesting to create underground/mound houses built into the landscape. It would also be interesting to add zones for reforestation and food gardens integrated into the development. This led me to look for architecture that was truly integrated in the landscape in the most literal sense of the idea. I did a quick search and stumbled upon Peter Vetsch. http://www.erdhaus.ch/main.php?fla=&lang=en&cont=start
This could truly be the solution for "unbuildable" lots that contain steep slopes in Seattle! :) It also redfines the concept of a green roof!