Urban rehabilitation towards sustainability

The sustainable concern is nowadays reflected in construction, reconstruction and rehabilitation of the building and how it can contribute to a lower environmental impact. Is intended to understand how the culture expressions forms, by the (re)construction and, of architectural styles in their inherent periods, is able to transform implicitly with creativity in the evolution of cities and societies. To reverse the amorphous urban area situation, it is necessary to intervene with sustainable geniality based on particular policies and strategies to regenerate the built space contributing to a sustainable social, economical and environmental growth and development. Why rehabilitate? What is the weight of rehabilitation on sustainability? These are some questions seeking an answer approach on the development of this paper. It is further developed as a sustainable city reference, the city of Freiburg im Breisgau, Germany, due to the implementation of reconstruction and rehabilitation policies and measures environmentally viable