My own…/ Your own etc : We can use  ‘Own ‘ as a pronoun after a possessive determiner ( example. my, her, our etc).  You cannot say ‘ an own house, an own car etc ‘

• My own flat, your own car, her own room etc.
• This is my brother’s laptop .  My own is being repaired.
• I didn’t have a flat of my own when I was a student.
• He has his own car.
• He doesn’t like to share his study room with his brother.  He wants his own room.
• Our bank has a parking place of its own.
• They live in their own house.
• How can you blame me?  Its your own flat.