In Mexico, the shortage of social house became one of the most important social problems. Tatiana Bilbao designs an affordable social house which only cost $8,000. In Bilbao’s design, the house has two bedrooms, one kitchen, one bathroom, and one 5-meter high living room. Bilbao chose different materials for the core of the house and surrounding the house. The house uses concrete blocks as the core and use other cheaper material for the surrounding modules. Adapting each families’ different requirement, those cheaper materials could allow doing future expansions. This house is affordable for Mexica government to solve their social house issue and provide enough room for a family to live in.