своя комната

own room

→ свой
phrase Very common #1,634
own room Своя agrees with the feminine noun комната and refers to the subject's own room.
RU: У каждой сестры своя комната.
EN: Each sister has her own room.

Теперь у Тома есть своя комната.

Now Tom has his own room.

У меня будет своя комната?

Will I have my own room?

— Мамочка (2014)

Дома у меня своя комната.

I have my own room at home.

У него своя комната.

He has his own room.