Surveying; carrying out a building survey

Buildings represent a considerable value. Furthermore, maps without buildings are practically worthless. The Offices for Digitisation, Broadband and Surveying are therefore required by law to document buildings in the real estate cadastre.


In the real estate cadastre, the building stock is recorded in addition to the plots of land. The buildings are displayed and described in the Official Real Estate Cadastre Information System (ALKIS).

The proof of buildings in the real estate cadastre is a valuable contribution by the Offices for Digitisation, Broadband and Surveying to securing ownership (and thus to legal certainty) as well as for planning by public or private bodies.

The Offices for Digitisation, Broadband and Surveying record all changes in the building stock (for example new buildings, demolitions, extensions, changes in use) as soon as possible. This includes the ground plan as well as building heights and roof shapes. The surveying of buildings is a statutory task and is therefore carried out ex officio without the need for an application. The Surveying and Cadastral Act obliges building owners to bear the costs of surveying and cadastral treatment of building changes.

If you have commissioned a surveyor for surveying in the construction industry to supervise your building project, or if you intend to do so, the surveyor can also carry out the building survey under certain conditions. For further information, please contact your local Office for Digitisation, Broadband and Surveying.




  • see "Ordinance on the User Fees of the Lower Surveying Authorities (GebOVerm)".


Administrative court proceedings; information

administrative claim

Status: 01.08.2021

Responsible for editing: Landesamt für Digitalisierung, Breitband und Vermessung

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