Tenant associations in French-speaking regions of Switzerland say that extreme temperatures are making some apartments unsuitable for living.
The ongoing heatwave affecting Switzerland is creating serious challenges for residents of many buildings, particularly apartments exposed to direct sunlight or located on upper floors. According to tenant associations, renters may be entitled to request a rent reduction if their apartment becomes difficult or impossible to live in due to excessive indoor temperatures.
The associations argue that property owners have a responsibility to provide adequate living conditions. If indoor temperatures reach unacceptable levels for extended periods, the situation may be considered a housing defect under tenancy regulations.
Experts warn that this phenomenon is becoming increasingly common as heatwaves grow more frequent and intense. Older buildings without adequate insulation and top-floor apartments are among the most affected, while high nighttime temperatures make it difficult for residents to cool their homes.
Tenant organizations recommend that residents document indoor temperatures and contact their landlord or building management to request corrective measures. If the issue persists, tenants may seek legal advice to explore the possibility of rent reductions or other forms of compensation.
The debate comes as temperatures in several parts of Switzerland have reached record highs for the month of June, raising concerns about the impact of climate change on living conditions and residential infrastructure.
