This operation of housing and offices is realized by making best use of the performances of the passive climatic comfort. Neither offices, nor housing are air-conditioned. The project followed a global approach of environmental quality where all the targets were handled, with for the most successful, those relative to the management of the water and the hygrothermal comfort. On the energy plan, besides the absence of air conditioning and the econome equipments (lamp, fans, etc.), was realized the whole heating of sanitary water with solar cells and an integrated photovoltaic power production gives an autonomy of 25 % to the operation. This project is the result of preliminary experiments on the devices of the climatic comfort in urban city center and tropical climate. The architecture is strongly defined by the technical devices of solar control, cross natural ventilation, protection of walls. At the heart of the project which bends over in the powerful winds of trade winds, is positioned a garden of biodiversity for the endemic species of the dry area. "Ilet du Centre" received "contemporary solar habitats" prize by the French renewable energy observatory Observ'ER.