A circuit court, upon good cause shown, may appoint in accordance with the provisions of § 64.2-451 a curator for the estate of a resident of the Commonwealth in a case where the legal presumption of death is not applicable if (i) at least one year has expired since the date that the resident was last heard from and (ii) it is not known and cannot with reasonable diligence be shown whether such person is alive. In determining whether good cause exists, the court shall consider the existence and efficacy of any durable power of attorney.