Property purchase is initiated in-world. Drive to the desired plot of land and interact with the "For Sale" sign at the postbox/entrance to confirm the purchase.
Finding plots
Available plots are marked on the world map by a round pink icon with a white house inside. Prices vary by plot size and location quality.
After purchase
The "For Sale" sign vanishes.
The map icon turns orange to indicate ownership.
You unlock fast travel to that plot.
You can add buildings and parking via blueprints from The Architect.
Strategy for new players
Start with the cheapest plot you can find — every plot unlocks fast travel equally, regardless of price. A starter plot near Gangjung or Seo-Gui-Po is the conventional pick.
SP vs MP differences
Property ownership behaves very differently in single-player vs multiplayer — see Single-player vs multiplayer ownership before buying.