Extreme heat and other climate change impacts are increasingly influencing housing markets, a phenomenon researchers are calling 'climate gentrification.' This occurs when property prices in neighborhoods perceived as safer from climate risks, such as those with less exposure to flooding or extreme heat, rise due to an influx of wealthier residents. These new residents are often seeking to escape the less liveable conditions in densely populated, built-up urban centers.
A study conducted by the Barcelona Lab for Urban Environmental Justice and Sustainability (BCNUEJ) at the Universitat Autònoma de Barcelona (ICTA-UAB) has mapped areas in Barcelona most vulnerable to this trend. The ClimateJusticeReady project integrated environmental, social, and housing data to create a climate gentrification vulnerability index.
Contrary to traditional gentrification patterns, the study found that neighborhoods on the urban periphery, which tend to be greener, less polluted, cooler, and historically more affordable, are becoming prime targets. These areas often feature better quality buildings and have evaded the speculative gentrification seen in central urban cores. However, as climate change intensifies heatwaves, these peripheral areas are expected to become highly attractive for their environmental and thermal comfort advantages.
Researchers warn that this shift could spread inequality, similar to how city centers have become unaffordable for many. Municipal investments in climate adaptations, such as creating green spaces, can inadvertently increase local housing costs and displace vulnerable populations. The phenomenon is already observed in US cities like Boston and Miami, facing threats from flooding and sea-level rise. The Barcelona project identified several peripheral municipalities, including Badia del Vallès, Sant Adrià del Besòs, and Castelldefels, as particularly susceptible.
As extreme weather events become more frequent due to human-caused emissions, climate gentrification is projected to grow, potentially creating significant social inequalities and displacement in unprepared municipalities.
