In Mexico, most people work in factories, or in farms, or both. They build their houses brick by brick over a period of several years, as and when they have some cash to spare. Mexvi is a new company whose innovation lies in the fact that it can build a house for US$ 7000 (half of what is takes over the traditional period of several long years), in about two weeks, using steel panels, which can be extended sidewards or upwards into a second floor when there is more money to spare. Read more here.