This work is a search for ways to promote the use of local and natural building materials in the Indian state of Bihar. For this purpose, the vernacular building traditions of the rural town of Manigachi are analysed for their sustainability potential from an ecological, social and economic point of view. In an exchange with the residents and crafts(wo)men, possibilities are sought that allow a further development of traditional building methods. This should enable a sustainable way of building that creates a pleasant indoor climate, promotes regional added value and ultimately leads to an improved livelihood for the residents. If the financial resources allow, the work should be carried out as design-based research. A school for the children and young people of the lowest caste should be planned and built together with the residents. In guided workshops, the residents receive knowledge and skills that they can use to renovate their own houses after the school is built.