FORTESIE goes towards the implementation of a reference architecture and pool of components which can be synthesised in various services, exchanged with other components implemented differently but most importantly expanded with the addition of new ones to serve new business services for other actors. An initial list of services and their interfaces will be offered for reuse in novel business models and services with performance guarantees. The work leverage FIWARE, IDSA, GAIA-X and OpenDEI conceptual architectures and essential building blocks for trust and sovereignty with the view to set up a reusable architecture and an open-source implementation for data-driven services for building renovation and ESIE.