My ds was 2 and a half before he went into his own room, because we lived in a 1bedroom flat so once we moved to a 2bed he had his own room.
My dd is 11m and still sleeps in bedroom with us.
However when we move she will be going into bottom bunk of bunkbed (ds will be on top bunk)
My dp is set on all 4 of us sharing a bedroom and having other bedroom as a dressing room for all our clothes and bedding ect.
I understand his worry with ds on top bunk as it will be safer if we was closer to him for falls or if he wanted to get down during night.
He wants this to be until dd is 3 or 4.
I think this is too old. I have agree to have us all in 1bed and a dressing room in other bedroom but I told him "when dd is 2 then they can have their own toon then"
His reply is always "no that's too early she will still be a baby"
I do not want to share a bedroom with my DC all the time!!