Land cadaster in the form of maps and registers created for the purposes of charging and collecting property taxes, was binding on Polish territory since the late XVIII and early XIX century. As a result of amend in this area a register of land and buildings is now in force. There are information about spatial structure and legal property status recorded. Issue of legal status recorded in existing mortgage books is often in conflict with provisions registration of land and buildings. In the Austrian zone ought to have regard to information contained in records of former land cadaster. Determining legal status of property and identifying those rights is difficult. Registries at ancient mortgage books and data resulting from cadastral maps are often the only reliable source of information about property state before World War II. Appropriate use land cadaster documentation can bring measureable results - not only on modernization of register land and buildings, but also in regulating legal status of estates. The study presents results of analysis preserved materials of Austrian land cadaster which were used when legal estate determining status in cadastral Hrebenne commune. ...