Is it legal for units and family buildings to use courtyards and build walls in the middle?

Other public places, public facilities and property services are owned by the owners.

Units and family buildings use courtyards, and it is legal to build walls in the middle if you agree.

Legal * * * ownership refers to the * * * ownership of * * by all owners according to law. Refers to the * * * parts that are not independent in structure and use and cannot be used exclusively according to law. The legal * * * part is the foundation of the residential area, which provides the necessary material basis and legal guarantee for realizing the normal living order of the residential area and making the owner's living life reach a certain quality standard. Before the promulgation of the Property Law, the legal norms defining some areas of * * * were very complicated, which were stipulated in administrative regulations, local regulations, departmental regulations and government regulations. The newly promulgated Property Law stipulates the distinction between * * * parts in all buildings from two aspects: first, the "exclusive part" in buildings is the * * * part, and second, the public * * * places such as roads and green spaces that are legally owned by all owners except urban roads and cities.