Vermont Petition To Open Decedents Estate is a legal document that is used to initiate proceedings in probate court. It is filed by the executor or administrator of an estate when the decedent has left a will. The Petition requests the court to appoint the executor or administrator, to open the estate, and to grant letters testamentary (or letters of administration). It must include information about the decedent, the heirs, and the assets in the estate. There are two types of Vermont Petition To Open Decedents Estate: Formal Petition and Informal Petition. Formal Petition is used when the decedent left a will. Informal Petition is used when there is no will. Both petitions require the petitioner to provide information about the decedent, the heirs, and the estate assets.