Why does the noun Treppenhaus have the article das?

This noun follows no general suffix rule — its gender is part of the core vocabulary you simply learn alongside the word.

Declension table for German noun Treppenhaus

How it changes across the four cases.

CaseDefiniteIndefiniteNegative
Nominativdas Treppenhausein Treppenhauskein Treppenhaus
Akkusativdas Treppenhausein Treppenhauskein Treppenhaus
Dativdem Treppenhauseinem Treppenhauskeinem Treppenhaus
Genitivdes Treppenhauseseines Treppenhauseskeines Treppenhauses

Examples in context

Real sentences using Treppenhaus in different cases.

CaseDefiniteIndefiniteNegative
Nominativ
Das große Treppenhaus ist hell.The large stairwell is bright.
Ein altes Treppenhaus ist dunkel.An old stairwell is dark.
Kein kleines Treppenhaus ist hier.No small stairwell is here.
Akkusativ
Ich sehe das große Treppenhaus.I see the large stairwell.
Wir suchen ein altes Treppenhaus.We are looking for an old stairwell.
Er hat kein kleines Treppenhaus.He has no small stairwell.
Dativ
Ich stehe in dem großen Treppenhaus.I stand in the large stairwell.
Er arbeitet an einem alten Treppenhaus.He works on an old stairwell.
Das gehört keinem kleinen Treppenhaus.That belongs to no small stairwell.
Genitiv
Die Tür des großen Treppenhauses ist offen.The door of the large stairwell is open.
Der Geruch eines alten Treppenhauses ist schlecht.The smell of an old stairwell is bad.
Der Wert keines kleinen Treppenhauses ist gering.The value of no small stairwell is low.

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Frequently asked questions

Everything you might wonder about der, die, das — and the Der Artikel app.

Is it der, die, or das Treppenhaus?

It is das Treppenhaus. In German, every noun has a grammatical gender, and Treppenhaus is neuter. You should always learn the article together with the noun to ensure your German grammar is correct.

What is the plural of das Treppenhaus?

The plural form of das Treppenhaus is die Treppenhäuser. In German, regardless of the singular gender, all plural nouns use the definite article “die.”

What does das Treppenhaus mean in English?

The German word das Treppenhaus translates to “stairwell” in English.

How do you decline das Treppenhaus?

Like all German nouns, Treppenhaus changes its article depending on the case. In the singular, the forms are:
  • Nominativ: das Treppenhaus
  • Akkusativ: das Treppenhaus
  • Dativ: dem Treppenhaus
  • Genitiv: des Treppenhauses

These changes are necessary because German uses cases to indicate the noun’s role in a sentence (such as the subject or object). Knowing these forms allows you to build grammatically correct sentences.