Today, there is a known crisis in the construction industry worldwide where major projects and programs are experiencing substantial cost increases and long overruns. This is mainly due to the lack of skills and experience needed to set up successful projects or programs. This research study investigates how construction is being delivered and how owners' organizations can take up the leading role in shaping the construction industry. It builds on the concept of the strong owner organization concept, defined as an owner organization able to drive more effective and efficient project execution by having and developing capabilities within three dimensions: strategic, commercial, and governance capabilities. The study extends the three-dimensional capability map based on recent literature and interviews with industry practitioners including capabilities, critical success factors, industry challenges, and best practices. This forms the foundation for a conceptual maturity model that aims to help owner organizations within the construction industry assess their maturity level, to support them in performing better project planning and execution. Furthermore, the strong owner concepts and the maturity model will aid organizations in their sustainable transformational journey toward SDGs #9 Industry, Innovation, and Infrastructure, #11 Sustainable Cities and Communities, and #12 Responsible Consumption and Production, by connecting people, organizations, data, and technology.