By 2036, about 31% of Hong Kong’s population will be 65 or above. This situation triggers the need for an Age-Friendly City framework (AFC) to promote healthy ageing. In this paper, we present a study on how conscious and collaborative interventions affect the public’s perception of various AFC domains and the implications for health-related well-being over time in Hong Kong’s Islands District. As part of a territory-wide project, the study used a repeated cross-sectional design to gather data among older persons in 2016 and 2018. Findings showed significant improvements in five of the AFC domains after the interventions. Although health-related well-being was lower in 2018 than in 2016, perceived improvements in AFC domains, including community support and health services, social participation, respect and social inclusion as well as the overall AFC index were positively associated with health-related well-being. Thus, even in the face of declining health, the enhanced forms of certain AFC domains might improve the health-related well-being of older persons. The findings are discussed within the broader theoretical debate on ecological ageing. Implications for community-led social care are drawn.

The importance of individuals’ social environment as an explanation for the ‘happiness-income paradox’, but also accounting for the negative relationship between income inequality and subjective well-being in macro-comparative perspective is now widely recognized. At the same time, however, debates are still ongoing about the specific role local communities play in moderating the relationship between personal income and subjective well-being. This article adds to this literature by examining cross-level interactions between individual- and district-level determinants of self-rated happiness using multilevel mixed regression techniques. Our findings suggest that living in wealthier districts in Hong Kong is a ‘positive’ for individuals on lower personal incomes, whereas the effect on those with higher incomes is more in line with arguments underlining the role of local communities as a ‘negative’. While the overall effect of district-level poverty on self-reported happiness in Hong Kong is benign, this is not the case for individuals on low incomes who are most negatively affected if they live in districts featuring higher levels of deprivation. Governments across contemporary Asian global cities should recognize the important role of citizens’ social environment and tackle existing structural barriers to greater self-reported happiness accordingly.