Several plots of land can be combined into one plot of land in the land register by means of a plot unification. The publicly appointed surveyors and commissioned representatives of the Thuringian State Office for Land Management and Geoinformation are authorized to certify the signatures on applications for unification.

The merger of parcels is a cadastral process for combining several adjacent parcels into one parcel. The parcels to be merged must form a single unit both locally and economically.

The unification of plots of land and the merger of parcels of land are often carried out in conjunction with each other.