Passive House is called when a building or dwelling has almost zero energy consumption, where the natural resources of its surroundings are used efficiently, without the need for external energy and maintaining high levels of quality and climatic comfort inside the dwelling.
In the initial phase of the project, the characteristics of the place where the house will be built should be studied, with the intention of adapting its design and choosing the most appropriate construction materials to enhance environmental conditions: solar radiation, orientation, volume, ventilation , humidity, etc.
In recent years the number of Passive house (German name that defines this type of house) has been multiplied by a greater awareness of environmental respect, energy saving and the forthcoming entry into force of the European Directive 2010/21 / EU , by which, as of December 31, 2020, all new private residential constructions or renovations must have the regulations of Nearly Zero Consumption Buildings (E CCN).