According to Eriksson (2015) ‘there is still a lack of comprehensive conceptual and practical frameworks that enable both a detailed and systemic understanding of integration in project-based supply chains.’ He therefore developed a theoretical framework that includes the four dimensions of strength, scope, duration and depth of integration. In this study we used this framework to describe four cases on relatively small scale (1M - 12M Euros) social housing refurbishment projects which are delivered through strategic partnerships. The data was collected through field research. The aim of this study was to further test the four levels of integration on their usefulness and to further elaborate on what could be added to the framework and how to operationalise its dimensions. It's our aim to use this operationalisation for an overarching study. In general, we think this framework provides a useful instrument in describing the level of integration in project based supply chains. We conclude that it is comprehensive in regard of critical elements that influence the performance of the partnership. Additionally, we found elements that can be added to the framework.