Was ist Danokjutaek (단독주택) — detached house?

Danokjutaek (단독주택) is a detached, single-household house on its own lot — the closest equivalent to a Western 'house.' They are far less common in Seoul than apartments and are typically more expensive for an equivalent location.

If you specifically want a standalone house with land, this is the category — but expect limited supply and a premium versus an apartment of similar size.