Harmonised database on materials, energy flows and environmental impacts for building archetypes representing the EU27 building stock.

This dataset provides per EU country 1) a detailed life cycle inventory (LCI), and 2) a life cycle impact assessment (LCIA) of both existing and newly constructed building archetypes representing the EU27 building stock. For each archetype, the LCI records annual material and energy flows, broken down by life cycle stage (according to EN 15978), and building element (such as external walls, pitched roofs or heating system). The dataset specifies the type of activity (e.g., material entering or leaving the system, energy use) and quantifies the associated material or energy amounts. The LCIA provides per building archetype the environmental impacts for 19 environmental impact indicators (in line with EN 15804+A2:2019) aggregated per element class, activity year and life cycle stage. This structure enables a comprehensive analysis of embodied and operational impacts, supporting robust scenario modelling, policy assessment, and benchmarking for decarbonization strategies in the built environment.