<p>The sharing economy model presents substantial potential for environmental and economic sustainability, yet research on effective strategies and their synergistic relationship with circularity remains underdeveloped. This study seeks to address this gap by examining and evaluating 18 strategies designed to foster the adoption of the sharing economy model for circularity (SEM4C) within the Vietnamese construction industry. Utilizing a quantitative approach, data from 133 construction professionals were analyzed using various statistical techniques. The exploratory factor analysis (EFA) results revealed five primary clusters of strategies, namely, (1) understanding and defining the circular sharing model, (2) building the circular sharing platform and ecosystem, (3) fostering circular collaboration and adoption, (4) ensuring circular asset management, and (5) measuring and improving circular impact. In addition, the results of ANOVA and Tukey’s post-hoc tests indicated significant differences in stakeholder perceptions regarding the importance of providing incentives to encourage sharing economy participation. Furthermore, this study established a hierarchy of strategic priorities, with stakeholders demonstrating consensus on the significance of (1) understanding the sharing concept, (2) developing a user-friendly platform, (3) identifying shareable assets, (4) creating standardized contracts, and (5) evaluating environmental benefits. Theoretically, this study contributes to the body of knowledge by establishing a clear connection between the sharing economy model and circularity within the specific context of construction projects. Practically, this study offers valuable contributions to both global and Vietnamese construction practices by providing actionable insights for national policymakers and industry stakeholders that can drive the construction sector towards more sustainable and circular practices.</p>