The main focus of this graduation project is on the transformation of the building industry within the self-built environment of slums towards a local, circular economy. To do this, it influences the building process, as well as the building materials and its production cycle. The currently highly polluting building industry has an influence on the living environment of everybody, but the industry has a very direct impact on the inhabitants of slums as they are often situated on less advantageous sites. Transforming the linear building industry of Indonesia into a sustainable and circular industry using wood, bamboo and agricultural waste streams to produce building materials has the potential to provide better quality of living, both on neighbourhood scale as well as on dwelling scale. Besides, a circular building material industry does less harm to the living environment, gives an economic boost to the self-built environment, creates jobs and it promotes a consciousness for sustainability. Useful local agricultural waste streams in Indonesia include wood chips and sawdust, cassava waste, rice husks, corncobs, coconut fibres, bagasse and palm oil waste.¬