You have the right to “stay put” with your foster carers after the age of 18 until you are 21 if this is what you and your foster carers want to happen. You might want to stay until you finish a college or training course or you might just not feel ready yet to move out.
Plans about whether you “stay put” will be discussed at your LAC review so it’s important that you talk to your Social Worker and IRO about what you want to happen. If you do “stay put” there will be an agreement between you and your carers about house rules, what they will do, what you are expected to do and any contribution that you will make towards bills and/or food.
If you and your foster carers agree that you should stay living with them after you are 21 then this will be a private arrangement and you should expect to pay some board and lodging.