GEOFIT is an integrated industrially driven action aimed at deployment of cost effective enhanced geothermal systems (EGS) on energy efficient building retrofitting. This entails the development technical development of innovative EGS and its components, namely, non-standard heat exchanger configurations, a novel hybrid heat pump and electrically driven compression heat pump systems and suite of heating and cooling components to be integrated with the novel GSHP concepts, all specially designed to applied in energy efficient retrofitting projects. To make viable the novel EGS in energy efficient building retrofitting, a suite of tools and technologies is developed, including: low invasive risk assessment technologies, site-inspection and worksite building monitoring techniques (SHM), control systems for cost-effective and optimized EGS in operation phase and novel BIM-enabled dedicated tools for management of geothermal based retrofitting works (GEOBIM platform). Furthermore, the project is commited with the application of novel drilling techniques as the improved low invasive vertical drilling and trenchless technologies.