Résumé : Urbanisation continuously imposes pressure on coastal brownfield sites. At the same time, climate change and associated consequences on coastal environments make these sites less secure for human habitation. Converging stresses make the renewal process of these sites challenging, to the extent that they are often perceived as wicked problems. Several scholars suggest that temporary best solutions are identifiable to address wicked problems via an Adaptive, Participatory and Transdisciplinary (APT) approach. This paper operationalises the APT framework by evaluating the development of a strategic land-use framework for the transformation of a coastal brownfield site in southern Victoria, Australia. Policy and planning documents and in-depth interviews conducted with key stakeholders were analysed. Results show that the process incorporated elements of the APT approach by engaging with diverse stakeholder views during consultation and included community appraisal of alternative scenarios. However, the process fell short of being truly transdisciplinary or collaborative as it separated disciplinary inputs in decision-making. As a result, it did not appear to influence the final plan to achieve adaptive and responsive outcomes. We conclude that a uniquely placed-based and adaptive response can be created when all stakeholders deeply and effectively collaborate to develop shared understandings of the problem and co-create shared responses. We demonstrate that an integrated APT framework, one that focuses on synergies between A, P and T, can provide a useful tool for assessing the decision-making process of complex projects. Furthermore, our recommendations to advance APT can help directing future decision-making processes in similar projects with wicked problems.