The article characterizes the model of demarcation proceedings, presenting important practical problems that arise at the intersection of administrative and civil proceedings. The analysis of the stages of demarcation and legal regulations in this area enables formulating the thesis about inadmissibility of re-initiation of proceedings for demarcation of real estate. A de lege ferenda postulate is put forward concerning the regulation of the admissibility of re-demarcation after the lapse of the statutory period of usucaption.