In Goryeo (or Koryo) Dynasty Korea, which lasted from 918 to 1392, property ownership was not exclusively restricted to aristocrats, but the noble class, known as the "yangban," held the majority of land and wealth.
The yangban were the ruling elite and typically owned large estates worked by commoners (sangmin) and slaves (nobi). While commoners could own property, the extent and nature of their ownership were limited compared to that of the aristocracy. Land ownership was a key factor in status and power during the Goryeo period, and the social structure was heavily influenced by Confucian principles, which promoted the hierarchy of yangban over commoners.
In summary, while aristocrats had significant advantages in terms of land ownership and wealth, not exclusively only they could own property. Commoners also had some property rights, but with considerable limitations compared to the aristocracy.