The following thesis presents the transformation between coordinate systems D48/GK and D96/TM. The coordinates of tie points in the coordinate system D48/GK are known. In the coordinate system D96/TM the coordinates have been determined using GNSS-technology with the VRS-method. Transformation parameters represent the connection between the two coordinate systems and enable the conversion of the coordinates between the two coordinate systems. The main purpose of this thesis is the attempt to perform an optimum similar transformation between the two mentioned coordinate systems, according to a different number and arrangement of tie points as well as the size of transformation area in two trade-industrial zones in Logatec.