This research aims to identify environmental factors that affect project performance. An extensive literature review and a pilot study found two types environmental factors related to project performance: organizational and project factors, each consists of three elements: structure, leadership and climate. In a survey of professional project managers or those who worked closely in project jobs, project structure, organizational climate and project leadership were identified as the most influential factors in effective delivery of projects. The findings are discussed and suggestions are made to improve the effectiveness of project performance.

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