About improving the accuracy of construction cost estimate at project design stage

UDK: 721.012.18

DOI: 10.24887/0028-2448-2026-6-86-89

Key words: construction cost estimate, accuracy of estimation, quality of estimation, design documentation, cost estimate documentation, comparables, consolidated elements, specification, estimation methodology, parametric model

Authors: V.V. Yatsenko (Giprovostokneft JSC, RF, Samara); Yu.A. Malova (Giprovostokneft JSC, RF, Samara); A.V. Tikhomirov (Giprovostokneft JSC, RF, Samara); D.A. Sherstobitov (Zarubezhneft JSC, RF, Moscow)

The article discusses current trends aimed at improving the quality and accuracy of cost estimates at the project design stage. On the one hand, the high importance of cost estimates for making managerial decisions and ensuring the economic efficiency of construction projects determines the need to develop measures to improve the accuracy of estimates. On the other hand, it is necessary to take into account that the estimated documentation is based on design documentation, which also has a certain accuracy of the engineering decisions made. And if at the pre–project stages, as well as at the stage of developing detailed documentation, the methods and approaches of cost estimation are clear and logical (in both world and Russian practice), then at the stage of developing project documentation they are more contradictory, and some of them carry the risks of illusory achievement of the initial goal – to increase the accuracy of the cost estimate. The article analyzes the changes in the approach to the development of estimates at the stage of project documentation from the point of view of methods and trends of recent times, draws an analogy with world practice, and shows the risks associated with attempts to improve the accuracy of estimates using the proposed methods.

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