The continuous advancement of Unmanned Aerial Vehicles (UAV) opens new possibilities for high-precision surveying. This study evaluates the suitability and accuracy of UAV-based measurement techniques for cadastral surveying applications. The central question is whether UAV systems – specifically UAV LiDAR and UAV photogrammetry – can achieve reproducible single-point determinations with a positional accuracy better than 5 cm. This accuracy requirement corresponds to the tolerance limits defined in the Austrian Surveying Regulation and therefore represents a practically relevant benchmark for UAV-assisted cadastral surveys.To address this question, both UAV LiDAR and photogrammetric datasets are acquired using a DJI Matrice 350 RTK equipped with the Zenmuse L2 LiDAR sensor and the Zenmuse P1 camera. For geometric evaluation, specific target objects are designed and 3D-printed. Spherical and pyramidal targets for LiDAR measurements, as well as coded targets for photogrammetry, are analysed using self-developed MATLAB adjustment algorithms. Another key focus is the development of a robust two-dimensional network adjustment program with automated outlier detection, which is used to derive precise terrestrial reference coordinates. The results show that UAV LiDAR measurements achieve horizontal and vertical deviations of less than 2,5 cm. In photogrammetry, the DJI P1 camera produces deviations within the low-centimetre range, even under direct georeferencing. Consequently, the hypothesis that UAV-based surveying methods can achieve reproducible point determinations with positional accuracies of 5 cm or better is clearly confirmed.The findings highlight the considerable potential of UAV-based cadastral surveying, particularly in topographically challenging terrain. At the same time, the study identifies a need for further development in data-processing workflows. An integrated, cadastral-compliant software environment that unifies UAV data acquisition, pointcloud processing, and geodetic adjustment would significantly enhance practical applicability. When properly planned and evaluated, UAV systems reliably meet legal accuracy requirements and represent an efficient technical and economic complement to conventional terrestrial surveying.