The study is devoted to the analysis of negative consequences of complex cadastral works (CCW) in the context of land management using the example of the Tyumen region. The article considers a number of specific problems that have arisen as a result of CW and the prerequisites that lead to the complication of land relations. The purpose of the work is to identify the causes and consequences of the current situation, develop recommendations for minimizing such negative consequences and ensuring sustainable land management. The author for the first time proposes to make clarifications and additions to the legislation to improve the methodology and increase the efficiency of complex cadastral works, including improving interdepartmental interaction and adjusting the procedures for assigning addresses to real estate objects. The results of this study are of practical importance for specialists in the field of land and cadastral relations, as it raises questions of interest about the state of cadastral data and provides recommendations to improve them in the interests of society and government agencies. The article raises issues related to the optimization of cadastral procedures, and also notes that along with the expected improvements after the CCP, problems and negative consequences arise, such as uncertainties in the boundaries of land plots and capital construction projects located on them.