The boundary cadastre has existed in Austria since 1968. It was introduced by the legislator so that the property owner has binding proof of his or her borders. In the case of properties that are not registered in the boundary cadastre, i.e. properties in the land tax cadastre, the area specification in the land register is purely an "indication" (no legal claim can be derived from it!). This area information may be correct or it may differ (considerably). Only actually negotiated and surveyed boundaries offer legal certainty and also area accuracy. This can play a major role in the purchase of land, as the purchase price is often derived from the area measurement. Legally binding land boundaries are therefore a great advantage for both the seller and the buyer.