For the first time in Barcelona, two usually separate programs are combined into the same building: social housing with temporary shelters for the inclusion of the most vulnerable groups. The design of the overall project responds to 3 basic criteria: Urban Responsibility by generating public space with an interior street that both separates and visually links both programs; Social Responsibility by matching the conditions of the different programs; Environmental Responsibility by implementing passive design strategies such as the winter garden and obtaining an A energy-rating label.