Does the open space outside the dormitory built by the unit belong to the property right unit or the land and resources bureau?

According to the property law:

Article 70 Owners shall have the ownership of the exclusive parts of buildings such as business buildings, and the right to share and jointly manage the common parts other than the exclusive parts.

Article 71 An owner shall have the right to possess, use, profit from and dispose of the exclusive part of his building. The owner's exercise of rights shall not endanger the safety of the building or damage the legitimate rights and interests of other owners.

The allocation principle of public building area is as follows:

(1) The public area of commercial housing is shared by buildings. The shared public building area is the public building area in this building, and the public building area that is not connected with this building shall not be shared into this building;

(2) The public building area serving the whole commercial house is shared by all commercial houses in the building; The public building area within a local scope is shared by the beneficiary commercial housing;

(3) After sharing the public building area, the specific parts of the shared building area of each commercial house will not be divided, but no one may occupy or change the original design function.