We consider the research and experience of the geodetic system that combines an electronic total station and a satellite receiver. The results of the study the accuracy of positioning of items in various conditions of the signal from the satellite to the receiver are given. A procedure called a surveying system is described. The estimation accuracy of the land areas determination depending on various factors is researched. The accuracy of the area recording depending on the grading of land is substantiated. Guidance on acceptable variances in areas at the land transactions is given.