Who owns the aisle in the basement?
If not, it belongs to public property rights, belonging to several households or the whole building. Roof and basement, like public corridors, elevator shafts and drainage ditches, should be owned by the building owner without clear property rights distribution, and the area of roof or basement is generally not registered on the property right certificate according to law. The behavior of the developer selling or the owner illegally occupying the roof of the building or selling the basement actually infringes on the legal rights of other owners of the building, because since the first house was sold, all owners of the building have the roof and basement, and the developer has no right to sell or make other sanctions. In real life, it often happens that developers set up billboards on houses or allow some advertising companies to set up billboards to collect royalties after selling houses, which is an act of infringing on the rights of other owners. Any possession or disposition of the public area of the house must obtain the consent of all the owners, otherwise the act is invalid. The owner of a building has the right to bring a lawsuit to the people's court in accordance with the law, demand to stop the infringement, and claim the return of unjust enrichment.