Directive (EU) 2024/1275, commonly referred to as EPBD 2024 or the recast EPBD, came into force on 28 May 2024 following its publication in the Official Journal of the European Union on 8 May 2024, according to EUR-Lex (reference DOUE-L-2024-80664). The directive recasts and repeals the previous iterations of the Energy Performance of Buildings Directive, specifically Directive 2010/31/EU and its 2018 amendments. Its central objective is the full decarbonisation of the EU's existing and new building stock by 2050, delivered through a structured series of obligations on energy certification, renovation passports, solar infrastructure, smart readiness, and life cycle assessment. Member States are required to complete transposition into national law by 29 May 2026, and, according to the European Commission Directorate-General for Energy, non-compliance exposes Member States to infringement proceedings. | The directive does not operate in isolation. Across EU Member States, it must be articulated through existing national instruments. In Spain, for example, the relevant frameworks include the Codigo Tecnico de la Edificacion, the Reglamento de Instalaciones Termicas en los Edificios, and the royal decrees governing energy certification. According to MITECO, the Spanish institutional platform for building energy efficiency confirms that some provisions of the directive were already aligned with existing Spanish regulation, whilst others, particularly those relating to renovation passports and life cycle analysis, require additional regulatory development at national level. A comparable pattern applies across other Member States, where the pace of transposition varies significantly depending on the maturity of existing building codes and certification infrastructure. | The gap between the directive's ambitions and national readiness is not trivial. According to BUILD UP, the European Commission's platform for building energy efficiency, an analysis of implementation in Spain indicated that the country had achieved approximately 60 per cent adaptation around the transposition deadline of May 2026. This means a significant segment of the technical and administrative obligations deriving from the directive still required specific regulatory development or updating of existing national instruments at that point. This pattern of partial transposition is not unique to Spain and represents a practical risk for property owners, investors, and technical teams who cannot wait for full national implementation before committing to certification, renovation, or new construction programmes. | One of the most immediate obligations concerns energy performance certificates. According to BUILD UP, from 29 May 2026 certificates must use the mandatory A-to-G scale and the standardised template defined in Annex V of the directive. This harmonised format serves two purposes: it enables comparability of assets across the EU property market, and it provides more actionable information on recommended improvement measures. The directive adds requirements beyond the current scale, including data on embodied global warming potential, the smart readiness indicator, and integration with the renovation passport. For building typologies with complex heating, ventilation, and air conditioning systems, such as hospital and healthcare estates or large educational campuses, accurate modelling of the updated certificate indicators is particularly critical for meeting compliance deadlines and avoiding administrative penalties. | The renovation passport is one of the most substantive innovations introduced by EPBD 2024. According to MITECO, the directive requires Member States to establish a renovation passport scheme based on Annex VIII of the directive, with a deadline of 29 May 2026. The renovation passport is a personalised document that describes a roadmap for deep, staged renovation of a specific building, with the objective of reaching the highest possible energy efficiency, ideally nearly zero-energy building standard or better. Unlike a standard energy performance certificate, the renovation passport is not a snapshot of current building performance. It is a structured plan of sequential interventions, each accompanied by estimated energy savings, approximate cost, and temporal priority. Its technical value lies in enabling phased investment planning, minimising the risk of stranded assets, and maximising access to public funding mechanisms such as national recovery and resilience plans and EU Cohesion funds. Producing a rigorous renovation passport requires a detailed energy model of the existing building, scenario analysis for improvement options, estimation of embodied and operational carbon emissions, and coordination with national or regional certification registries. | On solar energy integration, EPBD 2024 establishes concrete obligations for new construction. According to MITECO, in the Spanish implementation guidance for the directive, all new public and non-residential buildings with a useful floor area exceeding 250 square metres must have solar installations in place before 31 December 2026, subject to technical and economic feasibility. This obligation extends progressively to other building categories in subsequent phases. The directive frames solar energy not as an optional performance enhancement but as default building infrastructure, a conceptual shift that has direct implications for architectural design, structural loading, urban planning permissions, and building services coordination from the earliest project stages. For engineering teams working across energy generation and distribution sectors, the convergence of building regulation and energy regulation creates a more complex technical context that demands coordinated input from multiple disciplines simultaneously. | The regulatory calendar extends well beyond May 2026. According to BUILD UP, the first binding requirements for life cycle assessment will begin to apply to large buildings from 2028, extending to all new buildings by 2030. In the context of EPBD 2024, life cycle assessment measures the global warming potential across the entire building life cycle, including construction materials, operational phase, and demolition, expressed in kilogrammes of CO2 equivalent per square metre per year. Projects currently in design for large floor areas must therefore incorporate life cycle assessment methodologies into their technical documentation now, to be compliant when those requirements enter into force. This is particularly relevant for industrial and manufacturing facilities, where buildings combine high technical loading with floor areas that frequently exceed the thresholds triggering the most demanding obligations. Additionally, according to the European Commission Directorate-General for Energy, Member States are required to submit their final national building renovation plans by 31 December 2026. Those plans must quantify the existing building stock, set renovation targets by decade, and define associated financing measures, providing the priority framework against which national and European funding calls will be aligned. | The practical implications for building owners, developers, and technical teams across the EU are considerable. Energy performance certificates issued before May 2026 may require revision if they do not conform to the Annex V template, particularly in property transactions occurring after that date. Owners with renovation programmes under consideration should assess whether a renovation passport is more appropriate than isolated improvement measures, given that the passport may be a prerequisite for access to certain public financing lines. New construction projects exceeding 250 square metres in public or non-residential use must assess the technical and economic viability of solar installation from the earliest project stage, with any exemption clearly documented. Engineering teams working on large buildings should already be integrating life cycle assessment procedures into their standard workflows to be prepared for the 2028 requirements. Energy audits carried out under existing national transposition measures must be coherent with the new indicators introduced by EPBD 2024, in particular the global warming potential metric and the smart readiness indicator. Structured information management approaches, such as those aligned with ISO 19650 for BIM, provide a documented and auditable basis for managing the multiple simultaneous compliance deadlines that now characterise building projects across the EU.