Within this panorama, we developed a project which most important objective is to create a housing prototype with spatial and material qualities at an affordable price. To be able to achieve such a goal, we needed to know what the people who were actually going to live inside the house needed and wanted in terms of materials, form, function and appearance. After several in-situ interviews and workshops, and in total contrast from what is being built all around the country in terms of social housing, we arrived to a project adopting the form of the archetypical house (two slanted roofs) which adapts to different geographical, social and cultural variations. We expanded the minimal federal requirement of 43 sq. meters (463 sq. ft) per house, by building a central core of rigid materials (concrete blocks) and different surrounding modules of lighter/ cheaper materials (wood pallets) which allow future expansions in different phases, preserving the outside appearance and adapting to each family’s budget, needs and desires. The first phase of the house includes two bedrooms, 1 bathroom, 1 kitchen and a double-height dining/living room. The third phase contemplates space for the same rooms and 5 separate bedrooms, with the possibility of adapting each house according to each family’s specific needs.