This study used satellite Global Positioning System and optical ground-based total stationrnpositioning system in an integrated approach to determine a modern geodetic measurement basedrn2D and 3D cadastral system for Addis Ababa University Science Faculty usually called Arat kilorncampus. This provides a parcel-based land and cadastral property spatial and non-spatialrnregistration with a tie to an absolute and global geodetic positioning reference system.rnPreviously, cadastral land property registration was determined traditionally on a paper maprnusing simple architectural drawing that describes the relative location of a particular land parcelrnand properties on it with respect to a well known locality names (e.g., street name, buildingrnname, etc) â€“ the old cadastral system has no spatial component. Now, with the advent of GPSrnpositioning system and optical total station this conventional cadastral system which has beenrnbased on non-spatial parcel based registration becomes obsolesce.rnThe modern cadastral registration system has to tie the non-spatial administrative cadastralrncomponent to its corresponding spatial component. The new approach uses GPS receiver andrnoptical total station to map the 2D and 3D representations of the cadastral properties.rnGAMIT/GLOBK was used to eliminate the errors from GPS observations to establish first orderrncadastral surveying fundamental control points accurate to centimeter level. This provides arnunique opportunity to establish a well distributed high accuracy (~ 5cm) second order cadastralrnsurveying control benchmarks using optical total station measurements with a tie to the firstrnorder GPS-based survey control points so as to carry out high resolution 2D and 3D cadastralrnmapping. The combined GPS and Total station surveying techniques have registered the 2D andrn3D spatial information of about five cadastral properties occupying an area of 34376 squarernmeters. 26% of the 2D cadastral registration corresponds to buildings, while 1%, 1%, 2%, 1%rncorresponds to Green area, playground, walkway and asphalt road respectively.