As title! Relevant as I very recently (as in, today) told my dad to get out of my room when he came in without asking and startled me - to put it mildly, we do not have a good relationship, and I do not want him going in there as I try and maintain it as somewhere I feel totally safe.
Him being able to go in/out without permission means it isn't that anymore for me. But I can see it might be unreasonable because he's the parent (though the house is owned by my mother).