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Key words: cadastre systems, integration, financial-accounting systems

Cadastre systems are mission critical systems designed for the registration of parcels, buildings and apartments as well as their owners and users. These systems belong to the most important public systems used by various organizations and individual persons. There is no integrated cadastre system in Poland. The maintenance of real estate cadastre registers is dispersed among above 400 information centres located in district local self-governments as well as in the municipalities of bigger towns which exploit their local cadastre systems. So the attempt to create a unified cadastral system over the country is one of the goals of Polish government in the field of information technology. Architectures of integrated cadastre systems on the central level as well as on the level of a province or a district are analysed in the paper. Two main IT projects aimed at the creation of an integrated system are presented and discussed. Also the approaches to assure interoperability between a cadastre system and land usage payment system and a financial-accounting system in a municipality are shown.