In relation to the concession to third parties of the roof of the building for the installation of telephone aerials, with Sentence no. 8434/20 the Supreme Court recently ruled that ‘the contract whereby a condominium has granted the solar pavement or other suitable common area to third parties, for a fee, to allow them to install infrastructures and systems that transform the area, while allowing the owner of the paving to enjoy and dispose of the apparatus during the relationship and to remove it at the end of the relationship, requires the approval of all the property owners if, according to the interpretation of the judge on the merits, it has granted the concessionaire a temporary right of surface area; it does not require the approval of all the property owners if, according to the interpretation of the judge on the merits, it has granted the concessionaire a concession to construct of a compulsory nature for a period of less than nine years.”