When all other recovery options have been exhausted, and you have a legal interest in the property that is subject to a liability order and owe £1000 or more, the council can apply to the County Court for a charging order on your property.
If a charging order is made and you fail to make payment of the council tax plus interest then your home is at risk because the council may apply to the County Court for an order for sale of the property.
Where the court places a charging order on your property when the property is sold you have to pay that debt off first before any of the proceeds are given to you. A charging order can attract interest payments.
If you owe the council any kind of sizeable debt, it is essential that you contact the council tax section and agree a programme of payments.