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Project interface could either be intra-project or inter-project; but intra-project exchange tend to dominate researchers’ attention over the years. The nature of project organisations and community interaction has not seen much research engagement despite the increasing impact of construction projects on the locals. This study examined the interaction between 86 project team members and their host communities in traditionally procured projects. The objectives were to assess exchange mechanics that ensured successful interaction, identify the most important factors, and to determine the organisational practices employed by project organisations in managing these interactions. A structured questionnaire survey was adopted and data analysis involved percentages, mean score and inter-rater agreement. The result revealed that communication, honesty, keeping promises and involvement of the stakeholders are most important exchange mechanics. Furthermore, project-community interfaces are best managed using a community liaison person. This beneficial management practice is challenged by the rigid structure of traditional project organisations. However, project organisations can transform and integrate the liaison person at operation level; this will provide checks and balances, and give the community a vision of participation in project governance. The study provides insight into effective project-community interface interaction factors and best management practices that support a flowing project performance.