Resources depletion and climate change imply a change in the building criteria. PROVIBIS is a bioenvironmental, sustainable building approach addressed to poor families based on waste recycling which can be carried out by the families themselves. PROVIBIS rooms are equipped with thermal comfort, rainwater recovery, biodigester, energy saving, solar heater and design economy. Since the Universal Declaration of Human Rights (UDHR) was approved in 1948, the right to adequate housing has been acknowledged as one of the most important needs to be solved. In Argentina more than 30% of the population does not have a house and lives in slums, tenement houses or occupied houses.