The aim of the research described in this paper is to examine the validity of the claims that higher-density urban form promotes social equity—that is, promotes benefits for the life-chances of low-income groups. Overall, the evidence suggests that, for medium-sized English cities, higher urban densities may be positive for some aspects of social equity and negative for others. More specifically, likely benefits include improved public transport, reduced social segregation and better access to facilities, while the main problems are likely to be reduced living space and a lack of affordable housing. Investigations of different aspects of density show that the cities that most support social equity appear to be those that have a large proportion of high-density housing.

The prevalence of depression was associated with independently rated features of the built environment, independent of individuals' socio-economic status and internal characteristics of dwellings.

Although promotion of the compact city is now enshrined in land-use planning policy in many countries, including the United Kingdom, there is little evidence to support the many claims in its favour. In seeking to provide empirical data to advance the debate, one of the key problems researchers face is the task of measuring urban compactness. Research on the compact city is hampered both by a lack of consensus on its meaning and by the absence of recognised indicators for measuring it. This paper describes the development of a large set of urban compactness indicators used in an investigation of social sustainability outcomes in twenty-five English towns and cities. The paper begins by identifying and defining the different aspects of urban compactness, then outlines the indicators (including sources and methods) used for measuring each of these aspects. Finally, the values of these indicators for a range of English towns and cities are presented and reviewed. The aim of the paper is to contribute methodological tools to the compact city debate and provide a model for further research, essential in this field.

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