The proposal recognizes the resource map of the island of Formentera in the same way that it morphologically recognizes its traditional architecture. The building avoids the use of non-renewable materials such as concrete, PVC, steel or others that harm the environment. There is a strong will to reduce the impact of the building during its construction and during its useful life.

The living units are made up of three habitable modules of exactly the same dimensions and two exterior modules that make up the intermediate spaces in relation to the outside. This typological system has many advantages. It allows a lot of flexibility in the use of the apartments and adapts not only to the different situations of its inhabitants but also helps to adapt to seasonal changes.

A south access gallery is the building’s energy regulator; in winter it gets closed and thanks to the greenhouse effect it generates it allows to heat homes without other active air conditioning systems. In summer they can be opened and, thanks to the cross-ventilation of all the rooms, they do not make it necessary to install AC or heating appliances.

During the construction natural materials such as wood, stone, posidonia algae, lime and earth are used, while the maximum systematization, recycling and prefabrication of all its elements are enacted. A construction with waste management is promoted that takes advantage of 100% of the waste generated.

Not only is the structure modular and prefabricated, but so are all the other elements. The kitchen, bathroom, carpentry, railings and more are exactly the same throughout the building. This not only reduces execution time but also reduces errors and costs. Construction systems are proposed that would allow the construction of each of the modules in the workshop as well as the toilets and kitchens.