This thesis describes the process of creating parametric models for prefabricated construction which are used for quick and easy adjustment of the system elements according to specific project requirements. The thesis begins with a brief overview of the presence of parametrization in construction and highlights the advantages of parametric models. After that, pipe systems and their components used in prefabricated construction were studied. This analysis serves to enhance understanding of pipeline systems and provides a clearer picture of how different types of pipe systems should appear in parametric model. In the next step, the importance of using 3D tools in model creation is presented and it is explained why 2D tools may not be suitable for such complex applications of parametrization. Some of the tools used in thesis are explained and other important items of the 3D CAD system which were used are highlighted. Parameters for the layout and dimensions of pipe system elements are then formulated, followed by the demonstration of distribution and parametrization for different pipeline systems. After gathering sufficient information on parametrization and pipe systems in general, the subsequent sections present the development of the final parametric model. This model allows a quick and easy adaptation of the layout of pipe systems for various configurations of prefabricated bathrooms.