Circular Design with Digital Tools: This study conducts a bibliometric analysis and comparison of computer-aided design (CAD), building information modeling (BIM), and computational approaches, showcasing their potential to foster Circular Economy practices in the built environment. It uncovers exciting possibilities offered by digital methods, such as BIM-based LCA, computational design methods, and emerging circularity indicators, towards a more comprehensive evaluation of circular design strategies.

Construction 4.0: In the era of Construction 4.0, this research emphasizes the pivotal role of digital tools in advancing sustainability. From enhanced interoperability to integrating diverse data sources for LCA and circularity, these technologies seamlessly contribute to the holistic evaluation of projects. 

The paper presents actionable recommendations for further development. Computational plugins provide enhanced flexibility, supporting the needs of architects and engineers in the design process. Moreover, the potential replacement of LCA software and spreadsheets by BIM-LCA integrations underscores the transformative power of Construction 4.0. The research unveils exciting opportunities for novel digital methods, envisioning algorithms for circular design and the seamless sharing of digital twins and material passports.