one’s own house
Des fois elle se comporte comme si c'était sa propre maison.
Sometimes she acts as if it were her own house.
— Parasite (2019)
Mon frère aîné a construit sa propre maison le mois dernier.
My older brother built his own house last month.
Chacun est roi dans sa propre maison.
Everyone is king in their own house.
Tom a construit sa propre maison.
Tom built his own house.
Il est difficile d'avoir sa propre maison à Tokyo.
It’s difficult to own your own home in Tokyo.
La charité commence par sa propre maison.
Charity begins at home.