One of the greatest challenges to be faced in the fight against climate change in the construction sector is the fact that (non-traditional) conventional solutions are routinely accepted despite their high environmental impact. In particular, reinforced or mass concrete foundations are used at almost all sites, but they require a large amount of material, involve high emissions (some toxic), are extremely heavy and cannot be recovered. It is surprising to observe that most recent constructions in which the environment is taken into account use such foundations. This paper presents the results of the research carried out on lightweight recoverable foundation solutions. The aim is to dramatically reduce the amount of material and allow the foundations to be deconstructed and recycled along with the rest of the building, leaving the land clear for reuse.