STEPS consists on the development of a new advanced building production system that allows to reduce or even eliminate the environmental impact of an entire production chain that integrate and feed the construction sector and substantially increase the productivity in the construction industry. This system depends on the research and development of a specific technological solution (houseFIT system) – a technological system of lightweight prefabricated components with a high level of automation, which will allow the complete production of buildings in self-construction or using robotized labor.