The increasing importance of sustainability in town planning and architectural design is strongly questioning the actual logic of built environment dispersion. The peripheral extension of cities is indeed leading to irrational uses of ground, growing environmental impacts and important infrastructural costs. Looked at from that point of view, the goal of the Ecoparc project is the regeneration of an urban wasteland, located next to the station of Neuchâtel (Switzerland). Associating notably sustainable architectural design, sociocultural revitalization and synergies promotion, the project consists in the development of a new urban area, including industrial building transformations and new multifunctional constructions (housing, training and working spaces).