Illinois Notice To Heirs-Petition For Letters Of Administration is a legal document filed by an executor or an heir of an estate of a deceased person in the state of Illinois. This document is used to inform the heirs of the estate of their rights and obligations, as well as to petition the court for the appointment of an administrator of the estate. It is filed with the court and provides the basis for the appointment of the administrator. There are three types of Illinois Notice To Heirs-Petition For Letters Of Administration: Small Estate Notice, Simple Notice, and Full Notice. The Small Estate Notice is used when the estate does not exceed $100,000 in value, the Simple Notice is used when the estate is valued between $100,000 and $300,000, and the Full Notice is used when the estate is valued over $300,000. All three types of notices are used to inform the heirs of their rights and obligations, as well as to petition the court for the appointment of the administrator.