The final energy consumption of the building represented approximately 31% of the total consumption at a national level by 2016. In this context, and from an energy point of view, it is evident that there is a need to achieve a more ecient building. This energy eciency is achieved in a logical way, focusing on the passive aspects that limit the energy demand of the building.

While it is true that today we place special emphasis on the energy eciency of buildings, it is important to see how architecture, good architecture, has never been alien to it. The authors of this paublication, José María de Lapuerta and Javier García-Germán, make a tour of multi-family housing buildings built in Spain, between 1999 and 2019, analyzing their behavior from the perspective of sustainability, and demonstrating how the projects that we could consider as exemplary, from the architectural point of view, also have significant value in terms of sustainability.

The study shows that there are no standard solutions, but, rather, there are multiple possibilities to solve all of these issues, without limiting the expressive capacity of the architecture. It is also convenient to highlight how the solutions have to adapt to the specific conditions of the climate zone in which the building is located. As Spain is a country characterized by its climatic diversity, this fact has a special relevance.

The final energy consumption of the building represented approximately 31% of the total consumption at a national level by 2016. In this context, and from an energy point of view, it is evident that there is a need to achieve a more ecient building. This energy eciency is achieved in a logical way, focusing on the passive aspects that limit the energy demand of the building.

While it is true that today we place special emphasis on the energy eciency of buildings, it is important to see how architecture, good architecture, has never been alien to it. The authors of this paublication, José María de Lapuerta and Javier García-Germán, make a tour of multi-family housing buildings built in Spain, between 1999 and 2019, analyzing their behavior from the perspective of sustainability, and demonstrating how the projects that we could consider as exemplary, from the architectural point of view, also have significant value in terms of sustainability.

The study shows that there are no standard solutions, but, rather, there are multiple possibilities to solve all of these issues, without limiting the expressive capacity of the architecture. It is also convenient to highlight how the solutions have to adapt to the specific conditions of the climate zone in which the building is located. As Spain is a country characterized by its climatic diversity, this fact has a special relevance.