The influence of historical conditions on time and cost of construction project

Conducting construction works in a building or in an area entered in the historic register is associated with the contracting authority's risk of incurring higher than planned costs of works, as well as delays in their implementation. In many cases, these deviations are completely independent of contracting authority and contractor. The aim of this article is to indicate the reasons for cost and time changes in the construction project, which is influenced by the historical conditions of the building site's location. In practice, the detailed considerations presented in the article may contribute to increasing the efficiency of spending public funds in the implementation of construction projects of a specific nature. Based on the selected example reconstruction of the Old Pharmacy building located in the historic part of the old city of Gda ńsk, the authors analyze and classify factors affecting the cost and time of construction works taking into account the historical conditions of the location of the facility. © 2018 The Authors. Published by Diamond Congress Ltd. Peer-review under responsibility of the scientific committee of the Creative Construction Conference 2018.