In engineering geodesy are used normal heights but with GNSS are measured geodetic heights. Us transformation surface can be used geoid and quasigeoid. Geoid is used us height reference surface which best agree with Mean Sea Level on other hand theoretically it can not be solve. If we want to calculus geoid it is necessary to make some assumption about density of Earth crust. Quasigeoid can be determined without assumption about Earth crust density only with use of gravimetrical measurements but it is not an equipotential surface of Earth gravity field. All over the world are used satellite data about Earth gravity field and regularly develop new gravity models. One of the newest is EIGEN- 5C. Model is developed in Europe and fit very well to Europe area. Precision criterions of satellite data are correlation and autocorrelation which are explicit miligalls. Accuracy criterion of model is deviation from GNSS/levelling data. Improve satellite data with terrestrial data from gravimetrical networks it is possible to create quasigeoid model which precisely and accurately describe local area