The integration of Building Information Modelling (BIM) and Life Cycle Assessment (LCA) has gained importance in building design decision-making processes, where various approaches have been developed. Nevertheless, in moving towards a circular economy (CE), current integration approaches still face limitations regarding the integration of CE principles into building design. This paper focuses on LCA-based BIM plugins and investigates through a series of semi-structured interviews with expert practitioners in the field, the opportunities and challenges associated with the integration between BIM and LCA platforms as way by which to enhance the incorporation of CE principles. Findings reveal the considerable potential of using LCA-based BIM plugins at early design stages as a decision-making tool to enhance circularity. However, the results also highlight the importance of the data requirements and accuracy in both BIM and LCA modelling; and thus, the need for (i) effective management relating to both time and work, (ii) clear guidance for BIM modelling and use of LCA plug-ins, and (iii) increased knowledge regarding the proper implementation of LCA and the application of CE concepts.