Most construction companies have to deal with cost overruns, impacting nine out of 10 projects. A review of the studies of cost overruns found a total of 173 causes of construction cost overrun, but only a few appeared frequently enough to qualify as top causes of overruns. Ultimately, to reduce exceeding budgets, construction companies must become aware of the most likely causes of overrun and how to avoid them.

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• The Extent of Cost Overruns in Construction Projects
• Common Causes of Construction Cost Overruns