Integration of circular economy principles during the pre-construction stage to enhance the sustainability of MEP works

Purpose Upon analysing the potential for sustainable construction, mechanical, electrical and plumbing (MEP) work emerges as crucial for mitigating environmental impact, with the pre-construction phase identified as the most suitable for integrating sustainability practices. Hence, this research aims to investigate the integration of circular economy (CE) principles during the pre-construction stage to enhance the environmental dimensions of sustainability in MEP works. Design/methodology/approach Using a pragmatic philosophical approach, this study adopts a qualitative research methodology comprising a comprehensive literature review and three rounds of semi-structured expert interviews conducted using the Delphi technique. Data collected through multiple Delphi rounds were analysed using manual content analysis. Findings The findings reveal seven key sustainability issues in MEP works, 20 barriers and 23 strategies for integrating CE principles with MEP works to enhance sustainability in the pre-construction stage. This study aligns specific strategies and barriers with each sustainability issue, offering actionable insights for industry application. Originality/value Focusing on integrating CE principles, MEP works and sustainability, this research fills a significant gap in the existing literature. It offers practical insights for the construction industry to adopt more sustainable practices. It highlights the potential of CE principles to enhance resource efficiency, reduce costs and minimise environmental impacts during the pre-construction phase of MEP works. Ultimately, this study contributes to shifting traditional construction practices towards more sustainable approaches, thereby significantly minimising the construction sector’s environmental footprint.