_{Image from the INFINITE website of the case study.}

As part of the European INFINITE project, a semi-detached house built in 1950 in northern France has undergone a full-scale renovation aimed at improving its energy efficiency, in line with the objectives of the national Energiesprong programme.

Led by the social housing provider Vilogia, the intervention has transformed the property through the application of industrialised solutions, including building-integrated photovoltaic (BIPV) façades, external insulation, upgraded joinery, and modernised thermal systems, all while preserving the building’s original architectural character. This initiative is part of a wider programme involving 207 dwellings, with the collective ambition of achieving energy neutrality by 2025.

The project stands out for its replicable approach and alignment with French technical standards, notably through the acquisition of a Technical Experimentation Assessment (ATEx) for the innovative solutions implemented.

This experience demonstrates the feasibility of applying deep, industrialised renovation strategies across Europe’s existing building stock, highlighting both environmental and social benefits. The French case study within the INFINITE project thus emerges as a benchmark for future large-scale sustainable refurbishment initiatives.