The Supreme Administrative Court, while controlling the legality of the activities of the public administration, as the result of the cassation, which was filed by Blumski Law Firm (the file number I OSK 320/14), claimed that the head of a municipal authority’s directive regarding the rules which determine the level of rental fees of municipal ‘s property, if the directive did not concern the particular contracts but included general guidelines, was the act of municipal body, different from the act of local law (taken in the field of public administration – article 3 §1 point 6 of the Act – Law on Proceedings before Administrative Courts). Therefore the examination of the appeal from such directives belong to the jurisdiction of the administrative courts.