3D representations are recognized as an essential component of Augmented Reality (AR) oriented applications. However, not many examples of AR-oriented applications employ structured 3D data models despite the existence of standard 3D information models like CityGML. One of the reasons for this shortcoming can be explained by lack of a step by step approach for enriching AR-oriented data models with 3D features. Therefore, a three step procedure is proposed to address this limitation such (1) back-ward engineering of an AR-oriented application to its current data model, (2) enriching the current data model with 3D representation factures, (3) a mapping the enriched model to a standard 3D infor-mation model. A notable contribution of this work is that the procedure of data modeling has been subject to the UModelAR meta-model which has brought a complementary standpoint to 3D geospatial modeling in the adoption AR envi-ronments. Furthermore, the enriched data model has been mapped to CityGML information model with CityGML Application Domain Extension (ADE) concept. To demonstrate the feasibility of this approach, an operating mobile AR-oriented game has been used for the case study.