<p>Without immediate intervention, global warming will have devastating consequences on the environment for future generations. Thus, there is an urgent need to adopt more sustainable economic practices like the Circular Economy (CE). Although several policies and regulations support this goal, such as the European Green Deal, Ireland consistently ranks among the poorer-performing countries in CE adoption. One of the Irish sectors that contributes the most to this is the construction sector, where the construction environment constitutes 30-40% of Greenhouse Gas emissions. With this in mind, a comprehensive synthesis of the diverse range of barriers and enablers to CE adoption is crucial for developing targeted strategies to improve Ireland’s CE performance and contribute effectively to the sustainability goals. Through a comprehensive systematic review, an analysis of CE and the built environment in Ireland is undertaken, drawing from a wide range of high-impact documents, including peer-reviewed journal articles, policy reports, and white papers. We took a holistic approach to identify these barriers and enablers, including a multi-stage search and screening process based on Preferred Reporting Items for Systematic reviews and Meta-Analyses guidelines, ensuring relevance to the Irish construction sector and the CE concept. The tools used to identify these are bibliometric analysis including keyword frequency mapping and citation tracking like well-reputed scientific databases such as ScienceDirect, coupled with targeted manual searching of key Irish government and industry publications. These enablers and barriers were analysed using a thematic synthesis approach, where emergent themes were grouped into critical categories and then evaluated to determine their relative significance and interconnectedness within the Irish context, resulting in a synthesised framework of key intervention points.</p>