The project emphasises the idea of 'seeding a dwelling' as a viable model for low-cost housing. The 'seed' consists of one room, a separate latrine, and the enclosure around the plot. As economic resources become available the inhabitants can adapt the plot, using the existing walls as support for the construction of further rooms until they achieve a full patio house, with a back yard for stabling animals. The structure is made of reinforced concrete and blocks of gypsum (of which Mauritania has an abundant supply). The exterior is finished with gypsum cement, coloured with soil.