According to the Central Provident Fund ("CPF") Board, the CPF savings you used for the property and accrued interests will not be refunded to your CPF account after you pass away. The property becomes part of your estate if held in tenancy-in-common.
If you have a will, the property will be distributed according to the will. If there is no will, the property will be distributed based on intestacy law, which is a set of distribution rules predetermined by the law. If the property was held in joint-tenancy, it will be passed on to the remaining surviving joint owner(s) based on right of survivorship.
Read more: Immortalize X PropertyGuru Publications, What Happens To My Stuff When I Die? (Singapore Edition), All About Probate & Administration (Singapore Edition)