+4°C Climate Challenge Spurs Housing Policy Discussions in France

A pivotal conference titled "+4°C: quelles politiques pour loger la France de demain?" is scheduled for December 18, 2025, at Sciences Po’s Amphithéâtre Émile Boutmy in Paris. Organized by the Centre d'études européennes et de politique comparée (CEE), the event will examine how a projected 4°C increase in global temperatures by 2100 could transform housing needs and public policy in France. Around 350 participants including mayors, researchers, urban planners, and politicians, such as Anne Vignot, mayor of Besançon, and Emmanuel Grégoire from the Paris Assembly, are expected to engage in debates.

The conference doubles as the launch event for the research program "Besoins en logements à l'heure de la transition écologique," aiming to analyze housing requirements amid ecological transition. Discussions will focus on adapting urban development and housing policies to meet climate challenges ahead.

In a related development, Maider Arosteguy, mayor of Biarritz, sounded the alarm at an international housing congress in the Basque Country. She highlighted how the COVID-19 pandemic and the rise of rental platforms have worsened housing shortages in major European cities, emphasizing the urgency of pragmatic political consensus to effectively tackle the housing crisis.

Together, these events underscore growing recognition that addressing housing issues in the context of climate change demands coordinated political resolve and innovative policy frameworks.