Although construction cost is a top priority in this design challenge, I also have to make sure that comfort of the house isn't sacrificed. Design is another aspect to consider and having the constraints of building on a slim lot will definitely make things more difficult. So in order to draw inspiration on this challenge, I did a research on modern slim houses on the net and found a couple of unique and practical slim houses.
Slim House In Tokyo by Mizuishi Architect
Slim House in Toronto by Drew Mandel
Slim House in San Francisco By Architect Craig Steely
Slim House in Seatle
Slim House in Toronto By Donald Chong