The diploma thesis deals with the field of the judicial clarification of boundaries. The area of the Regional Surveying and Mapping Authority in Nova Gorica has been chosen for the analysis of practical examples. The general part of the thesis represents the description of the study area followed by the presentation of the legislation and regulations that deal or have dealt with the clarification of boundary and with the recording of such cases in the land cadastre. Regulations that define the judicial expert and his or her tasks and jurisdiction are also included in the general part. The second, practical part is divided into two parts. The first part deals with the statistical analyses of number of judicial procedures of clarification of boundary in the study area according to the data of SMA Nova Gorica. In the second part the results of the detailed analyses is given about the timeline and the contents of the three chosen judicial cases with the exposed advantages and concrete problems concerning the judicial procedures of clarification of boundaries.