The measurement of sustainability is not only a contentious issue, but one which has captured the attention of both academics and politicians since the late 1980s. A plethora of methods and approaches have been developed over the last decades or so, from rapid measurements as inputs to specific projects, to longer-term processes of research, monitoring and wider learning. But perhaps, the most influential ones have been indicators. The tensions between expert-led and citizen-led models of indicator development have fuelled much debate in the literature, in relation to their reliability or effectiveness. Among the solutions suggested, integrating the two approaches has been seen as salient to tapping into various levels of 'knowledge' of sustainability and thus, a better way of assessing sustainability. However, little is known of whether these 'integrated' sets of sustainability indicators work in practice or, indeed, reflect local perspectives, values and understandings of sustainability which they aim to represent. This paper aims to fill this gap. We first design such an 'integrative' set of indicators which we then discuss with over 60 'sustainability experts' and 130 residents living in three urban areas in the UK. We find that our set of indicators is generally a good reflection of urban sustainability in these areas, however, individual indicators held different degrees of 'importance' in people's day-to-day lives, something which is little accounted for when measuring urban sustainability. We also find that sustainability indicators are not isolated pieces of information, but manifestations of local underlying processes and interconnections that can be mapped and which have the potential to shed more light on our understanding of local sustainability.