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Factors affecting cost estimate accuracy: Evidence from Palestinian construction projects

机译:影响成本估算准确性的因素:来自巴勒斯坦建筑项目的证据

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Estimating the cost of construction projects with high accuracy at the early phase of project development is crucial for project planning and financing. Construction clients require early and accurate cost advice prior to site acquisition and commitment to build in order to enable them to take the correct decision concerning whether to construct the project or not. However, many factors might affect the accuracy of a cost estimate. This study aims at identifying the factors affecting the accuracy of cost estimating construction projects in the West Bank in Palestine. A survey of 60 contractors and 45 consultants from the West Bank in Palestine was performed. Forty-one factors are identified in the study. The study investigates the impact of those factors measured by level of importance and ranked according to an importance index from both the contractors' and the consultants' points of view. The degree of agreement between the participating parties on the importance ranking of the factors affecting cost estimating accuracy in construction projects is presented. The findings reveal that the top five affecting factors according to the surveyed contractors are: fluctuation in currency exchange rate; contract management; number of competitors; financial status of owners; and fluctuation of prices of materials. While the top five factors according to the surveyed consultants are: the political situation; fluctuation of prices of materials; economic instability; poor planning; and previous experience of the contractor.
机译:在项目开发的早期阶段,高精度地估算建设项目的成本对于项目计划和融资至关重要。施工客户在购置场地并承诺建造之前,需要早期,准确的成本建议,以使他们能够就是否建造项目做出正确的决定。但是,许多因素可能会影响成本估算的准确性。本研究旨在确定影响巴勒斯坦西岸建设工程造价估算准确性的因素。对巴勒斯坦西岸的60名承包商和45名顾问进行了调查。在研究中确定了41个因素。该研究调查了从重要性水平衡量的因素的影响,并从承包商和顾问的角度根据重要性指数对这些因素进行了排名。介绍了参与方之间就影响建设项目成本估算准确性的因素的重要性等级达成的一致程度。调查结果表明,按受访承包商的排名,前五个影响因素是:汇率波动;合同管理;竞争对手数量;业主的财务状况;和材料价格的波动。而根据受访顾问的前五名因素是:政治局势;材料价格波动;经济不稳定;计划不周;和承包商以前的经验。

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