PROB § 5660

(a) If a revocable transfer on death deed recorded on or before 60 days after the date it was acknowledged before a notary public and another instrument both purport to dispose of the same property:

(1) If the other instrument makes a revocable disposition of the property, the later executed of the revocable transfer on death deed or the other instrument is the operative instrument.

(2) If the other instrument makes an irrevocable disposition of the property, the other instrument and not the revocable transfer on death deed is the operative instrument.

(b) A claim that a revocable transfer on death deed is inoperative pursuant to this section shall be brought as a contest under Chapter 5 (commencing with Section 5690).