Affordable Sustainable Housing in the EU

Overview of the Study

The European Economic and Social Committee (EESC) commissioned this comprehensive study on affordable sustainable housing in the EU. Authored by Agnieszka Kulesa, Agnieszka Maj, Aleksandra Owczarek, Anna Wiktorow‑Bojska and Karolina Zubel, the report synthesizes extensive literature reviews, database analyses and six country‑based case studies to assess policy solutions that combine affordability, sustainability and digitalisation.

Scope and Methodology

The research defines affordable housing as cost‑burden not exceeding 30‑40 % of household income and sustainable housing as encompassing environmental, social, cultural and economic dimensions. Data sources include Eurostat, OECD housing databases and the EU Building Stock Observatory. The study examines two cross‑cutting pathways: (1) digitalisation of the housing sector, and (2) the role of the social economy in providing housing.

Digitalisation Findings

Digital tools are unevenly adopted across the EU‑27. Denmark leads with a partially digital building‑permit system and mandatory BIM use since 2007; France has a partially digital permit process and 4.1 % AI adoption in construction; the Netherlands integrates BIM fully and reports 7.4 % AI use. The case studies illustrate tangible benefits: Plandata.dk centralises planning data, enhancing transparency; Paris Habitat’s digital platform streamlines tenant services and reduces operational costs; the Dutch IEBB project uses AI and machine‑learning to optimise renovation design, achieving up to 96 % accuracy in energy‑performance predictions. However, the study notes that many EU members still rely on paper‑based permits, limiting efficiency gains.

Social Economy Contributions

The social economy—non‑profit associations, cooperatives and limited‑profit housing entities—accounts for a substantial share of EU housing stock: 24 % in Austria, 1.1 % in Spain, and a growing presence in Poland through Social Rental Agencies (SRAs). Austrian limited‑profit housing associations operate on a cost‑rent model, charging €7.3 per m² and delivering annual savings of €1.2 billion for households. The Polish SRA pilot in Dąbrowa Górnicza provides rent 30 % below market rates, supporting about 60 households. In France, Paris Habitat manages 124 000 units, integrating green spaces and bio‑based materials, while achieving significant energy‑efficiency upgrades.

Key Data Points

• Over 10 % of urban households and 7 % of rural households spent more than 40 % of disposable income on housing in 2023 (Eurostat).
• The EU building sector contributes ~40 % of total energy consumption and 17 % of GHG emissions.
• Renovation Wave aims to renovate 35 million buildings by 2030, targeting a 60 % reduction in energy use.
• AI adoption in construction is highest in Luxembourg (11.3 %) and Portugal (10 %).
• The Netherlands’ Basic Registration of Addresses (BAG) provides 3‑D building models for all 5 million structures, supporting data‑driven planning.

Policy Landscape

EU initiatives influencing affordable sustainable housing include the European Pillar of Social Rights, the European Green Deal, the Renovation Wave, Fit for 55, and the New European Bauhaus. While housing policy remains a national competence, the EU shapes the agenda through soft‑law instruments, funding programmes and the promotion of interoperable digital platforms. The study recommends a “New European Deal for Affordable Sustainable Social Housing” to harmonise standards, enhance digital permit systems and support social‑economy providers with targeted subsidies.

Recommendations for the Medium Term (to 2030)

• Mandate interoperable digital permit platforms across member states.
• Expand EU‑wide housing data infrastructures (e.g., building energy performance databases).
• Increase public funding for social‑economy housing projects, ensuring profit‑reinvestment into affordability.
• Align national policies with the EU’s Green Deal targets, prioritising energy‑efficient retrofits.

Long‑Term Vision (to 2050)

• Achieve climate‑neutral housing stock through widespread adoption of BIM, AI‑driven design and circular‑economy construction practices.
• Institutionalise a EU Housing Directive that sets minimum standards for affordability, sustainability and digital accessibility.
• Foster cross‑border knowledge exchange on best practices, scaling successful models such as Denmark’s Plandata.dk, France’s Paris Habitat and the Netherlands’ IEBB.

Conclusion

The study underscores that integrating digital technologies and strengthening the social economy are pivotal for delivering housing that is both affordable and sustainable across Europe. By leveraging data, standardising processes and supporting non‑profit housing actors, the EU can address the dual challenges of rising housing costs and climate change, ensuring resilient, inclusive homes for all citizens.