How do you say nans house in french?

There's no direct translation of "nan's house" in French, as "nan" is a familiar term for grandmother in English. However, you can use the following depending on the context:

If you're talking about your grandmother:

* La maison de ma grand-mère: This is the most literal translation.

* Chez ma grand-mère: This means "at my grandmother's place" and is more common in everyday speech.

If you're talking about someone else's grandmother:

* La maison de sa grand-mère: (her grandmother's house)

* Chez sa grand-mère: (at her grandmother's place)

If you're talking about the house of a woman who is not your grandmother, but is called "Nan":

* La maison de Nan: This is the most direct translation, but it would be more polite to use her full name if you know it.

Remember to adjust the possessive pronoun (my, her, his, etc.) depending on the context.