Our country cadastre has been carried out by different institutions with different organizational structures and legislative regulations from past to present. There are numerous laws, regulations, circulars, and directives are regulating land registry and cadastre activities in Turkey (Cete, 2008). However, it is seen that there are laws relating to 8 cadastre and 34 laws related to land registry. Besides, there are three statutes and 1000 circulars (Ercan, 2003). Taking into account modern trends in the world (such as 3D / 4D Cadastre), the structure of the cadastral system, as well as the legislation, should be arranged in such a way as to be able to respond to these trends. In this respect, many studies have been carried out on the legal, technical and institutional structure of our cadastral system. Turkey's existing cadastral system consists of two primary components. These are deed recordings and cadastral recordings. Cadastral data, on the other hand, determines the location in a coordinate system and the shape of the estate. The immovables registered to the title as a result of the laws in our country are the land, the independent land section, and the permanent rights. Buildings, apartments, and business centers, which are registered to the land registry and are called "independent sections," are registered in the real estate registry. Besides according to article 683 of the Civil Code, a person who holds something has the authority to use it, to exploit it, and to make it available on his behalf, within the limits of the law. The current status of the land in Turkey due to the current law on cadastre map cannot be fully reflected. The third dimension on land and real estate is shown in 2D on the map with permanent rights. Located underground car parks, underground tunnels, and some networks cannot be registered. In our country, the roads are informal. It is shown in the cadastral maps but is not registered with the title. Because of this, pipelines, tunnels, underground bazaars passing under the roads are not shown in the cadastral maps. In this study, within the scope of the 3D cadastre, the cadastral system and projects in Turkey have been evaluated. Firstly, the immovables recorded in the existing system, and the relation with the three dimensions have been analyzed. In our country, we have researched what the objects that should be registered within the scope of 3D Cadastre in the direction of legal legislation. The legal obstacles to not registering these objects have been revealed. As a result, our cadastral system has been evaluated concerning three-dimensional cadastral development. Within the scope of the 3-dimensional cadastre, the country profile has been established, and the deficiencies in our current cadastral system have been identified. Also, an exemplary model of how to model the objects to be recorded in the 3D cadastral transition phase is presented.