Cal. Prob. Code § 13500

Except as provided in this chapter, when a spouse dies intestate leaving property that passes to the surviving spouse under Section 6401, or dies testate and by his or her will devises all or a part of his or her property to the surviving spouse, the property passes to the survivor subject to the provisions of Chapter 2 (commencing with Section 13540) and Chapter 3 (commencing with Section 13550), and no administration is necessary.