Linking Sustainable Project Management to Project Success: The Roles of Modern Construction Practices and Sustainable Leadership in Private Projects

Abstract

This study investigates the influence of Sustainable Project Management (SPM) on the success of private construction projects in Pakistan, with Modern Methods of Construction (MMC) as a mediating variable and Sustainable Leadership (SL) as a moderating factor. A quantitative research design was adopted using a structured questionnaire distributed to professionals from the private construction sector, yielding 250 valid responses. Data were analyzed through SPSS and Hayes’ PROCESS macro to test direct, mediating, and moderating relationships. The results reveal that SPM has a significant positive impact on project success. Moreover, MMC partially mediates the relationship, indicating that adoption of innovative construction methods strengthens the effect of SPM. Additionally, SL was found to positively moderate both the direct and indirect paths, suggesting that strong leadership enhances the role of SPM in achieving successful project outcomes. The study contributes to project management literature by integrating sustainability and innovation perspectives while offering practical guidance for project managers and policymakers in the construction sector.