In response to a growing influence of patients, higher specialisation, technological advancement and the need to provide care services more efficiently, the issue of sustainability in healthcare has gained prominence. The purpose of this paper is to investigate how the social and economic sustainability of healthcare are dependent on interconnecting resources across organisational borders and in different settings over time. Adopting a product development process perspective, the paper explores the gap between a planned healthcare facility and how it actually came to be used, through a longitudinal case study of the Skandion clinic, a small, highly specialised, hospital in Sweden. The findings suggests that integration of healthcare resources over time is central to achieve social and economic sustainability goals. The results hereby contend the prevailing view of hospitals as inde-pendent organisational units and highlights the need for more holistic analyses of sustainability in healthcare. Analyses which take into account the complex interdependencies stretching across networks of interconnected facilities and organisational units.