The tax return is filed in the prescribed documentation depending on whether it is an individual or a legal entity. To complete the documentation, it is necessary to send documents that prove changes in one's property (e.g. a copy of the decision to allow a deposit in the real estate cadastre, a decision on inheritance, etc.). Possible changes in the ownership of real estate are, for example, the sale or purchase of the real estate, inheritance, donation, building approval, removal of the building, and the like. The duly completed form must be submitted to the city or municipal office in person or appoint a representative.