To be recognized as the estate administrator, you must file the petition for grant of letters of administration with the Register of Wills. You will fill out and return this form to the Register of Wills within 3 months after contacting all heirs to the estate.• Notice of Estate Administration. Dying without a will is known as dying intestate. For an intestate estate, a person must formally file a petition for the grant of Letters of Administration. You can get this form from the Register of Wills when you turn in the Petition for Probate in Step One. Dying without a Will is also known as Intestacy. The court will issue Letters of Testamentary (called Letters of Administration if there is no will) and Short Certificates. Certificates and affidavits of death. The probate process in Pennsylvania can take anywhere from a few months to several years, depending on various factors.