Process, errors and omission in design, plans change by client, incomplete contract documents, differing site conditions, lack of experience for design evaluation during design period and impediment in prompt decision making process were the most causes of design change. The results indicated that lack of design review during design The questionnaire responses were analyzed based on Relative importance index. The research methodology engaged a questionnaire survey containing of fifty-one (51) questions about the cause and effect of design changes during the building construction, which was distributed to the project managers, client and the Engineers. The objective of this study is investigating the causes and effects of design change in building construction projects. Among these one or more of the parties initiate the design change due to internal and external factors which lead to both time and cost overrun in construction project. Lecturer, Civil Engineering Department, Wolaita Sodo University, EthiopiaĪbstract: -The main parties involved in Construction industry consists of Owner/Employer/client, Engineer/consultant, contractor, bank, insurance and government body. Matusala Bassa, Ashenafi Reta, Ashebir Alyew, Mamo Tora Causes and Effects of Design Change in Building Construction Projects in Three Selected Southern Ethiopia Zones
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