Inspired by the focus of the 2019 Solar Decathlon on revitalization of the building stock, the SPITI project aims to significantly contribute towards innovative techniques for the renovation of a top-floor apartment of the typical Greek polykatoikia. The SPITI project focuses on tackling the important problems of the modern Greek building stock, which has poor environmental and energy performance and is in acute need of cost-effective renovation. By incorporating modular design, climate adaptive building shell components and building integrated photovoltaic systems, this multidisciplinary project will nurture a Solar Powered and Innovative Technologically Inhabitancy. The implementation is expected to lead to innovative mechanisms, skill sets and measures for facilitating knowledge and ideas to flow across national boundaries and that can be successfully translated into marketable innovations that bring increased socio-economic benefits not only to Greek but also European cities.