European tenants and officials push heat‑wave mitigation measures

Record summer temperatures of up to 40 °C have surged across Europe, prompting a wave of responses to protect residents from extreme heat.

In France, the Court of Cassation ruled on 4 June 2026 that tenants may take legal action when a landlord’s failure to provide ventilation, blinds or adequate insulation makes a dwelling uninhabitable in summer, even though no legal temperature ceiling exists. The court affirmed that tenants can seek forced repairs and compensation for damages accrued over the past three years.

At the same time, a study by Pouget Consultants and the Alliance of Building‑Industry Actors found that one‑third of homes rated A or B under the French energy‑performance label (DPE) are ill‑suited for heat waves, effectively becoming “thermal kettles”. The DPE’s summer‑comfort indicator, displayed as a smiley, highlights deficiencies such as missing solar shading or lack of airflow.

In the town of Chaumont, residents of a social‑housing tower reported temperatures climbing roughly one degree per floor, reaching 36 °C on the top level while renovations worth €6.2 million are still incomplete.

German Green politicians called for a federal‑state climate‑solar programme to fund combined photovoltaic‑air‑conditioning units for hospitals, nursing homes, schools and day‑care centers, stating: “We need effective cooling in hospitals, care facilities, Kitas and schools. The combination of a rooftop solar plant and an air‑conditioning system is especially sensible.”

Festival organisers in Germany and France, faced with similar heat, set up shade structures, free water stations and are prepared to install temporary sprinklers if forecasts warrant them.

Berlin futurist Stephan Rammler warned that heat amplifies social inequality, noting that “heat is a massive amplifier of social inequality” and urging massive tree planting and equitable heat‑protection policies for the city’s most vulnerable residents.