A Study of Factors Influencing the Compliance of Design Estimates at the Construction Stage of Residential Buildings

This article primarily addresses the factors affecting the possibility of achieving the costs estimated in the design stage of a building after its completion. The authors rely on an information base of twenty-three apartment buildings erected by twelve construction companies between 2017 and 2023, divided into two phases (2017-2020 and 2021-2023). The outputs of the article present the conclusions of several years of research into the identification of factors and risks affecting construction costs, capturing the development of price indicators over time, creating a realistic picture of working with costs from the building's design stage during its execution and the application of sustainable and digitalization technologies within a selected segment of the building industry. The presented conclusions are based on statistical dependencies compiled using regression analysis to explore the relationships between the cost, time and technological parameters of selected buildings. These outputs provide an interesting and well-founded perspective on the obtained data, thus overcoming the lack of relevant methods, techniques and fitting algorithms for a sophisticated and long-term approach to pricing in the construction sector.