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Cost overrun

About: Cost overrun is a research topic. Over the lifetime, 958 publications have been published within this topic receiving 19895 citations.


Papers
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Journal ArticleDOI
TL;DR: In this article, the authors identified 10 most important causes of delay from a list of 28 different causes and 6 different effects of delay, and established an empirical relationship between each cause and effect.

1,277 citations

Journal ArticleDOI
TL;DR: In this paper, the authors present results from the first statistically significant study of cost escalation in transportation infrastructure projects and find that the cost estimates used to decide whether such projects should be built are highly and systematically misleading.
Abstract: This article presents results from the first statistically significant study of cost escalation in transportation infrastructure projects. Based on a sample of 258 transportation infrastructure projects worth US$90 billion and representing different project types, geographical regions, and historical periods, it is found with overwhelming statistical significance that the cost estimates used to decide whether such projects should be built are highly and systematically misleading. Underestimation cannot be explained by error and is best explained by strategic misrepresentation, that is, lying. The policy implications are clear: legislators, administrators, investors, media representatives, and members of the public who value honest numbers should not trust cost estimates and cost-benefit analyses produced by project promoters and their analysts.

1,123 citations

Journal ArticleDOI
TL;DR: In this article, the authors present the results of a questionnaire survey conducted to identify and evaluate the relative importance of the significant factors contributing to delay and cost overruns in Ghana groundwater construction projects.

780 citations

Journal ArticleDOI
TL;DR: In this article, a questionnaire survey was undertaken of project managers working on high-rise construction projects in two Indonesian cities: Jakarta and Yogyakarta, and the results reflect construction management problems common to developing countries.
Abstract: Many variables have an impact upon construction time and cost overruns in Indonesia. A questionnaire survey was undertaken of project managers working on high-rise construction projects in two Indonesian cities: Jakarta and Yogyakarta. The variables identified were ranked according to their perceived importance and frequencies of occurrence. Inflationary increases in material cost, inaccurate material estimating and project complexity are the main causes of cost overruns. The predominant causes of delay are design changes, poor labour productivity and inadequate planning. Using factor analysis techniques, delay and cost overrun variables were grouped into factors, and their relationships analysed. Although Indonesia specific, the results reflect construction management problems common to developing countries.

677 citations

Posted Content
TL;DR: In this paper, the authors present the first statistically significant study of the causes of cost escalation in transport infrastructure projects and find that cost escalation is strongly dependent on the length of the implementation phase.
Abstract: Results from the first statistically significant study of the causes of cost escalation in transport infrastructure projects are presented. The study is based on a sample of 258 rail, bridge, tunnel and road projects worth US$90 billion. The focus is on the dependence of cost escalation on: (1) the length of the project‐implementation phase, (2) the size of the project and (3) the type of project ownership. First, it was found, with very high statistical significance, that cost escalation was strongly dependent on the length of the implementation phase. The policy implications are clear: decision‐makers and planners should be highly concerned about delays and long implementation phases because they translate into risks of substantial cost escalations. Second, projects have grown larger over time, and for bridges and tunnels larger projects have larger percentage cost escalations. Finally, by comparing the cost escalation for three types of project ownership - private, state‐owned enterprise and other public ownership - it was shown that the oft‐seen claim that public ownership is problematic and private ownership effective in curbing cost escalation is an oversimplification. The type of accountability appears to matter more to cost escalation than type of ownership.

560 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202344
2022106
202164
202077
201985
201886