In light of the growing need to improve quality in construction projects, it is vital to limit and eliminate reworks, which can be accomplished by understanding their origins and identifying their causes. So, in terms of causes and categories, this study investigates reworking local projects. Data was gathered through a questionnaire that identified several variables that contributed to the reworking. Human, coordination and communication, technical and engineering, owner, project management, contract, and design was the seven major headings for these variables. To group the variables into core factors, the responses were further condensed using factor analysis. According to the findings of this study, the causes of reworks were inexperienced staff, project execution after a long period of study, a short term provided by the owner, poor whole project management, and insufficient study or project before bidding, as well as separation of design and execution Finally, this study concluded that a thorough commitment to quality management policy implementation will result in fewer reworks on building projects.