Cal. Probate Code § 10004

(a) Where the personal representative determines in his or her discretion that, by use or relationship, any assets of the estate, whether real or personal, constitute a unit for purposes of sale, the personal representative may cause the property to be appraised as a unit. (b) Whether or not the property is appraised as a unit, the personal representative may sell all the assets described in subdivision (a) as a unit and under one bid if the court finds the sale of the assets as a unit to be to the advantage of the estate. (c) No private sale of the assets as a unit may be made for less than 90 percent of the sum of the appraised values of the personal property and the sum of the appraised values of the real property, appraised separately, or for less than 90 percent of the appraised value if appraised as a unit. (d) If the assets to be sold as a unit include any real property, the sale shall be made in the manner provided for the sale of real property, and the bid and sale are subject to the limitations and restrictions established for the sale of real property. If the assets to be sold as a unit are entirely personal property, the property shall be sold in the manner provided for the sale of personal property.