Since 1992 and the Earth Summit in Rio de Janeiro at the latest, the concept of sustainability has also been the focus of attention in the building industry and architecture. It requires the use of intelligent technology, innovative construction, ecological materials, and an environmental approach to energy supply. This development is especially urgent in the area of residential housing, since we now see a growing sensitivity to quality of life and accommodation. People increasingly insist on a healthy indoor climate, natural moisture exchange, thermal comfort, and freedom absence of hazardous substances. The book provides extensive and technically detailed documentation of 25 sustainable residential structures in both high-tech and lowtech domain. There is a considerable variety among the individual projects in terms of their size and the materials used. The examples are chosen from 18 different countries on five continents and come from both rural regions and urban areas.