Conceptualising the built environment to inform sustainable urban transitions.

• Multiple conceptualisations of the city, includes agency of urban professionals and influence of socio-economic forces. • Change in cities is both incremental and driven by urban actors. • Main agents of change include, developers, architects, town planners, urban designers and landscape architects. • The built environment can influence the decisions of users of the space and convey power. • A spatial perspective of transitions can inform practical actions for supporting multi-sectoral sustainability transitions. Despite the prominence of cities within sustainability transitions, the scholarship has been criticised for its lack of engagement with spatiality. This article engages with physical change in urban environments through a critical scholarly review of interdisciplinary scholarship. This paper deconstructs conceptualisations of the built environment and identifies the similarities, contestations and unaddressed components in conceptualising the built environment across urban morphology, spatial-political economy, urban planning, and urban design. Following this, the paper reconstructs the built environment, reflecting on sustainability transitions scholarship. The analysis highlights this physicality as a necessary component for consideration when preparing any form of systemic urban change, especially when attempting to understand multi-sectoral transitions. Overall, the review reveals the need for a future research agenda that explicitly explores the role of the built environment and its creators in influencing multi-sectoral sustainability transitions. [ABSTRACT FROM AUTHOR]