Illinois Petition For Summary Administration (Intestate) is a legal process used in the state of Illinois when the deceased person did not have a valid will or trust. It is a simplified version of the probate process and is generally less expensive, time-consuming, and complicated than a regular probate. This process is available to estates with a gross value of less than $100,000, and to those with a gross value between $100,000 and $300,000 if all the heirs agree to it. There are two types of Illinois Petition For Summary Administration (Intestate): Small Estate Affidavit and Summary Administration. A Small Estate Affidavit is used when the estate is less than $100,000 and the heirs agree to it. Summary Administration is used when the estate is more than $100,000 but less than $300,000 and all the heirs agree to it. Both types of Illinois Petition For Summary Administration (Intestate) require the filing of a Petition with the court, and providing the court with legal documentation such as death certificates and proof of ownership of assets.