Neuhaus (Newenhavse) was first mentioned in 1288; the settlement of Leifling first in 1154 as Liwuelich and the settlement of Schwabegg as Castrum Swabec in 1212.
The Counts of Heunburg built Neuhaus Castle at the end of the 13th century.

In 1958 the current Municipality of Neuhaus was established by combining the previously independent municipalities of Leifling und Schwabegg.
Neuhaus (Newenhavse) was first mentioned in 1288; the settlement of Leifling first in 1154 as Liwuelich and the settlement of Schwabegg as Castrum Swabec in 1212. The Counts of Heunburg built Neuhaus Castle at the end of the 13th century.
In 1958 the current Municipality of Neuhaus was established by combining the previously independent municipalities of Leifling und Schwabegg.
Neuhaus, Carinthia