This research aims at how circular economy concepts could be integrated into Sri Lanka's construction sector to improve sustainability and line with global environmental goals. To identify barriers to CE adoption, a mixed-method approach was used, beginning with a systematic literature review and progressing to a complete survey and correlation analysis. Key challenges highlighted include a lack of understanding, resistance to change, and insufficient regulatory frameworks. Descriptive statistics demonstrated that respondents consistently perceived these obstacles; but correlation analysis revealed substantial links between barriers such as knowledge gaps, budgetary limits, and regulatory problems. The findings provide a strategic framework for promoting innovation and sustainable practices, both of which are critical to Sri Lanka's construction industry's long-term resilience in the face of global environmental issues.