The thesis addresses the infrastructure cadastre, methods, and technologies for detecting and monitoring underground utilities. The infrastructure cadastre in Croatia records data on the type, purpose, characteristics, usage, and location of electrical, communication, heating, oil, and water pipelines. It consists of a written part (lists of infrastructure and owners) and a graphical part (infrastructure plans and geodetic surveys). Geodetic surveys are crucial for creating the cadastre and include data collection, geodetic measurement, and technical reports. Utility detection equipment was used, which includes transmitters and receivers for active and passive detection. Active methods allow precise tracking, while passive methods utilize existing electromagnetic signals in the utilities. Active methods include utility detection by induction, utility detection by direct connection on the line, utility detection with a signal clamp, and utility detection by connecting to powered lines. In the practical part of the thesis, field measurements were conducted at the University North in Varaždin, using Leica ULTRA equipment and the GNSS receiver Trimble R12i. The main utility line for the UNIN 3 building was located using the passive method. Field measurements included challenges such as vegetation and interference from metal pipes. Data processing was performed in AutoCAD Map software, where the data was overlaid with a digital orthophoto.