The central or largest building on a property or in a building complex, which serves the most important function.
example
Die Verwaltung befindet sich im Haupthaus, die Werkstätten sind in den Nebengebäuden untergebracht.
The administration is located in the main building; the workshops are housed in the outbuildings.
Usage tips
Word composition
'Haupthaus' (main building) is made up of 'Haupt-' and 'Haus' (house). The prefix 'Haupt-' means the 'most important,' 'central,' or 'largest' part of something.
EXAMPLE
Alle Besucher müssen sich zuerst im Haupthaus anmelden.
All visitors must first register in the main building.
Productive prefix
The prefix 'Haupt-' is very productive in German. If you know it, you can understand many other words, such as 'Hauptbahnhof' (main train station), 'Hauptstraße' (main street), or 'Hauptgericht' (main course).
EXAMPLE
Das Hauptgericht heute ist Fisch mit Kartoffeln.
Today's main course is fish with potatoes.
Context: outbuildings
The word 'Haupthaus' (main building) is almost always used when there are other, smaller buildings on a property. These are often referred to as 'Nebengebäude' (outbuildings).
EXAMPLE
Die Tagung findet im Haupthaus statt, die Workshops sind in den Nebengebäuden.
The conference takes place in the main building; the workshops are in the outbuildings.
Compare with
synonym
Haupthaus vs Hauptgebäude
main building
'das Hauptgebäude' and 'das Haupthaus' both mean the most important or central building in a larger complex. Often, you can use both words in a similar way, for example at a hospital, a company, or an estate. 'Hauptgebäude' sounds a bit more general and fits especially well for public or larger complexes with several buildings. 'Haupthaus' is often heard in connection with properties, hotels, residential homes, or private complexes. The difference is usually not big: what matters is that it is about the central building in comparison with outbuildings or secondary buildings.
Haupthaus
Nach dem Abendessen treffen sich die Gäste im Haupthaus.
After dinner, the guests meet in the main building.
Hauptgebäude
Die Anmeldung befindet sich im Hauptgebäude der Universität.
Registration is located in the university's main building.