Contesting a Living Trust in California

California recognizes several grounds for invalidating a trust or an amendment. Undue influence means someone applied excessive persuasion that overcame the settlor's free will, often through isolation, dependency, or control of information. Lack of capacity means the settlor did not understand the nature of the act, their property, or their relationships at the moment of signing. Fraud means the settlor was deceived about what they were signing or about a material fact. Forgery means the signature is not authentic. Improper execution means statutory formalities were not met. Each ground has a distinct evidentiary burden, and the timing rules are unforgiving: after notification under Probate Code section 16061.7(a)(1), section 16061.8 sets the later of 120 days from service or 60 days after the trust terms are delivered pursuant to section 1215 during that 120-day period.

Sources: Probate Code s.16061.7 - Trustee notification · Probate Code s.16061.8 - 120-day contest period · Verified 2026-09-22.

Timing matters as much as status. While a trust is revocable and the person who can revoke it is competent, Probate Code section 15800 gives that person, not the beneficiaries, the rights the code otherwise gives beneficiaries, and the trustee's duties run to the settlor. In practice that means a living trust is rarely contestable while the settlor is alive and competent: the settlor can simply change it again. Most contests therefore begin after the death, when the trust has become irrevocable and the trustee is required to serve the section 16061.7 notification. After that point, section 17200 lets a trustee or beneficiary petition the court concerning the internal affairs of the trust or to determine whether the trust exists, and its list of proceedings expressly includes determining the validity of a trust provision.

Sources: Probate Code s.15800 - Rights while a trust is revocable · Probate Code s.17200 - Petitions concerning internal affairs of trust · Verified 2026-09-11.

A trust contest is filed as a petition in the superior court, and the county is fixed by statute rather than by where the contestant lives. Under Probate Code section 17005, a proceeding concerning a living trust belongs in the county where the trust's principal place of administration is located; for a testamentary trust it may also be brought where the decedent's estate is administered. Once filed, the petitioner must give notice. Section 17203 requires notice of the hearing to be delivered at least 30 days before the hearing to all trustees and beneficiaries, and requires notice and a copy of the petition to be served on anyone else whose interest would be affected; the court may not shorten that service period. At the hearing and afterwards, section 17206 lets the court make any orders necessary or proper to dispose of the matters in the petition, including appointing a temporary trustee where the trust needs protecting while the dispute runs.

Sources: Probate Code s.17005 - Proper county for trust proceedings · Probate Code s.17203 - Notice of hearing on a trust petition · Probate Code s.17206 - Orders on a trust petition · Verified 2026-09-17.

Most undue influence claims have to be proved from circumstances. One group does not. Probate Code section 21380 presumes that a gift in a trust or will is the product of fraud or undue influence when it goes to the person who drafted the instrument, to certain fiduciaries who transcribed it, or to a care custodian of a dependent adult where the instrument was signed while the care was being provided or within 90 days before or after that period. The presumption also reaches close relatives, cohabitants and employees of those people. It shifts the burden of proof: the person receiving the gift must rebut it by clear and convincing evidence, and for a drafter, or someone related to or associated with the drafter, the presumption is conclusive. A beneficiary who fails to rebut it bears the costs of the proceeding, including reasonable attorney's fees. The main escape route is section 21384: a certificate of independent review signed by an independent attorney who counselled the settlor privately about the transfer.

Sources: Probate Code s.21380 - Presumption of fraud or undue influence · Probate Code s.21384 - Certificate of independent review · Verified 2026-09-17.

Only in limited cases. Under Probate Code section 21311, a no-contest clause in a California trust or will is enforced against a direct contest only if the contest is brought without probable cause, and against a challenge to whether property belonged to the transferor or a creditor's claim only if the clause expressly says so. Probable cause exists if, when the contest is filed, the facts known to the contestant would cause a reasonable person to believe there is a reasonable likelihood that the relief requested will be granted after an opportunity for further investigation or discovery. The practical rule follows: a contest built on real evidence carries far less forfeiture risk than one filed on suspicion, which is why the evidence-gathering step comes before filing.

Sources: Probate Code s.21311 - When a no contest clause is enforceable · Verified 2026-08-14.