PROB §13651: (a) A petition filed pursuant to Section 13650 shall allege that administration of all or a part of the estate of the deceased spouse is not necessary for the reason that all or a part of the estate i

(a) A petition filed pursuant to Section 13650 shall allege that administration of all or a part of the estate of the deceased spouse is not necessary for the reason that all or a part of the estate is property passing to the surviving spouse, and shall set forth all of the following information: (1) If proceedings for the administration of the estate are not pending, the facts necessary to determine the county in which the estate of the deceased spouse may be administered. (2) A description of the property of the deceased spouse which the petitioner alleges is property passing to the surviving spouse, including the trade or business name of any property passing to the surviving spouse that consists of an unincorporated business or an interest in an unincorporated business which the deceased spouse was operating or managing at the time of death, subject to any written agreement between the deceased spouse and the surviving spouse providing for a non pro rata division of the aggregate value of the community property assets or quasi-community assets, or both. (3) The facts upon which the petitioner bases the allegation that all or a part of the estate of the deceased spouse is property passing to the surviving spouse. (4) A description of any interest in the community property or quasi-community property, or both, which the petitioner requests the court to confirm to the surviving spouse as belonging to the surviving spouse pursuant to Section 100 or 101, subject to any written agreement between the deceased spouse and the surviving spouse providing for a non pro rata division of the aggregate value of the community property assets or quasi-community assets, or both. (5) The name, age, address, and relation to the deceased spouse of each heir and devisee of the deceased spouse, the names and addresses of all persons named as executors of the will of the deceased spouse, and the names and addresses of all persons appointed as personal representatives of the deceased spouse, which are known to the petitioner. Disclosure of any written agreement between the deceased spouse and the surviving spouse providing for a non pro rata division of the aggregate value of the community property assets or quasi-community property assets, or both, or the affirmative statement that this agreement does not exist. If a dispute arises as to the division of the community property assets or quasi-community property assets, or both, pursuant to this agreement, the court shall determine the division subject to terms and conditions or other remedies that appear equitable under the circumstances of the case, taking into account the rights of all interested persons. (b) If the petitioner bases the allegation that all or part of the estate of the deceased spouse is property passing to the surviving spouse upon the will of the deceased spouse, a copy of the will shall be attached to the petition. (c) If the petitioner bases the description of the property of the deceased spouse passing to the surviving spouse or the property to be confirmed to the surviving spouse, or both, upon a written agreement between the deceased spouse and the surviving spouse providing for a non pro rata division of the aggregate value of the community property assets or quasi-community assets, or both, a copy of the agreement shall be attached to the petition.