The authors consider the features of cadastral works using continuously operating reference stations (CORS). One of the key parameters affecting the determining the coordinates of the base station accuracy is its distance from the original CORS, which must be confirmed at the stage of satellite equipment certification. Reliable and effective control of the exactness of satellite positioning is the discrepancy of the measured line length between the base stations being determined and the same length calculated from the coordinates of the base stations obtained as a result of satellite positioning. If this criterion is met, it can be argued that the base stations whose coordinates are determined relative to the original CORS can be the starting points for determining the location of real estate objects. Based on these conceptual provisions, experimental work was carried out in the territory of the Altai Republic to determine the coordinates of the base stations being computed relative to the three CORS with subsequent processing using the criteria proposed in the article. The results of the performed studies enable: determining the maximum distance of the CORS starting point from the base station being determined; forming a scheme for mathematical processing of satellite positioning results with the inclusion of CORS located at a considerable distance from the base stations being determined; carrying out reliable control of the accuracy of satellite positioning results; and designing the location of the base stations being determined to implement a combined method of their coordination.