In this study, structured cultural heritages were investigated mainly in the light of three-dimensional (3D) cadastre and secondarily e-governance in the name of handing them down safely to future generations. The aim of the study is to give examples of cultural assets/heritages, 3D cadastre, condominium for realising 3D cadastre both legally and technically, and expectations of 3D cadastre, e-governance in Turkey, land management implementations and what the situation for normal buildings is and also what should be done for immovable cultural heritages. Some cultural assets to be protected have been utilised as both trade centres and tourism centres from the past to the present. These buildings, which were generally built in Ottoman times, have been used or occupied owing to repairs and restoration projects in Turkey. The registration of immovable cultural assets, which are immovable properties that are accepted and registered as cultural heritages on the land registry as 3D land objects is extremely important for providing information about drawing projects with details, floors, structural types, the number of independent units, and common areas and documents about building(s) and parcels. The registration status of the hans known as Bedesten, Tashan, and Gonhan in Trabzon in the Cars! District owned by fused foundations will be examined in terms of ownership in this study. Deficiencies for these hans constructions on 3D registration will be detected by analysing the current registration situation. The way this type of real estate is required to be legally registered from land to completed building will be presented. This study will be completed with suggested solutions in 3D and e-governmental terms at least for immovable cultural heritages. For example; if the italic 'no' in the table at the end of the study is transferred into 'yes', cultural assets can be known and managed and sustained and also handed down to the future generation not only for Turkish people but also for tourists and all mankind.