Hong Kong’s Housing Crisis Deepens Under Extreme Heat Wave

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Hong Kong’s poorest residents are bearing the brunt of rising temperatures as climate change intensifies the city’s housing crisis. An estimated 220,000 people live in subdivided units, rooftop shacks, or “cage homes,” often smaller than a parking space and built with thin metal sheets that trap heat. Surveys show indoor temperatures in these dwellings can reach 41°C, even when outdoor readings are lower.

The lack of ventilation and insulation makes life in these units hazardous. According to the Society for Community Organization, 83% of residents report sleep problems during summer, while many also suffer from skin conditions, dizziness, and emotional stress. Families often sacrifice meals to afford air conditioning, while others go without, leaving children and the elderly especially vulnerable.

The issue is compounded by a warming climate. The Hong Kong Observatory reports that the number of “very hot days”, with temperatures exceeding 33°C, has surged from just six two decades ago to more than 50 annually in recent years. The urban heat island effect in densely built districts further reduces nighttime cooling, worsening conditions for low-income households.

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Despite Hong Kong being one of the world’s wealthiest financial hubs, housing remains its most persistent inequality. For 14 consecutive years, the city has ranked as the world’s least affordable property market. Many low-income families pay over HK$3,000 per month for subdivided units that are illegal, overcrowded, and unsafe.

Authorities have pledged to build 30,000 light public housing units by 2027–28 and increase transitional housing, but progress has been slow. Critics argue the root problem lies in public housing policies that fail to prioritize those most in need. For now, tens of thousands remain trapped in sweltering homes, with little certainty that meaningful change will arrive before the next heatwave.