Heat is becoming a housing problem in London
A discussion at the London Assembly this week highlights a growing climate risk inside homes across London: overheating. As the city warms and dense buildings trap heat, indoor temperatures in some neighbourhoods can run significantly higher than surrounding suburbs during heatwaves. What’s striking is the policy tension behind it. Planning rules often prioritise daylight and large windows in new developments, but those same features can increase solar heat unless shading or cooling measures are included. The city’s framework still leans toward “passive” cooling - trees, green roofs and ventilation - while widespread air conditioning remains discouraged because of its energy demand and its contribution to the urban heat island effect. For those working in climate and urban resilience, the dynamic is familiar. The science on rising heat risk is clear. But translating that knowledge into planning rules, building design and infrastructure moves much more slowly. It’s a reminder that adapting cities to climate change isn’t just technical --- it’s institutional. 👉 Read moreA discussion at the London Assembly this week highlights a growing climate risk inside homes across London: overheating. As the city warms and dense buildings trap heat, indoor temperatures in some neighbourhoods can run significantly higher than surrounding suburbs during heatwaves. What’s striking is the policy tension behind it. Planning rules often prioritise daylight and large windows in new developments, but those same features can increase solar heat unless shading or cooling measures are included. The city’s framework still leans toward “passive” cooling - trees, green roofs and ventilation - while widespread air conditioning remains discouraged because of its energy demand and its contribution to the urban heat island effect. For those working in climate and urban resilience, the dynamic is familiar. The science on rising heat risk is clear. But translating that knowledge into planning rules, building design and infrastructure moves much more slowly. It’s a reminder that adapting cities to climate change isn’t just technical --- it’s institutional. 👉 Read moreExpert summary pending. Showing the newcomer version.