A Canadian company called NOMAD Micro Home sells prefabricated homes, easy to assemble in just a few days, a great example of ergonomic use of space. The standard model, with sides of just 3 meters long, is equipped with a living room, kitchen, bathroom & a furnished bedroom.
Project developers say such a house can be built both in urban and in rural areas, suitable both as family residence and as a shelter in areas affected by natural disasters. Best part? It's only CA$25,000!