How to File a Petition to Appoint a Successor Trustee in California

If a California trust has no trustee and its own terms cannot fill the seat, a beneficiary or trustee can ask the Superior Court to appoint one. The process runs in a set order: confirm the vacancy, file a petition in the right county, give at least 30 days' notice of the hearing to every trustee and beneficiary, and attend the hearing.

A trust without a trustee usually arrives on someone's desk at a hard time. A parent has died or become too ill to manage things, a named successor has said no, or a trustee has walked away in the middle of a family disagreement, and bills, a house or an account are sitting with no one authorized to act. Most people facing this process have never set foot in a probate courtroom and are not sure whether they even have the right to ask, let alone what happens after they do. This guide walks through each stage of a contested or court-supervised appointment in California, the Probate Code sections that govern it, and the points where a straightforward petition can turn into a dispute.

The process below has five steps, preceded by the threshold question of whether a court petition is needed at all. Timing depends on the county's calendar and on whether anyone objects; the one fixed interval the statute sets is the 30-day notice period before the hearing.

Before You Start: What Triggers the Need for a Court Petition

A trustee is the person or institution that currently holds and manages trust property for the beneficiaries. A successor trustee is the person or institution that steps into that office when the current trustee can no longer serve. The question at the outset is whether the trust's own terms solve the vacancy, or whether a court has to.

Probate Code section 15660 sets the order. It applies when a trust has no trustee, or when the trust instrument requires a vacancy in a cotrustee's office to be filled. If the instrument names the person to fill the vacancy or provides a practical method of appointing one, the vacancy is filled the way the instrument says. If that does not work, section 15660(c) allows a trust company that has agreed to accept the trust to fill the vacancy on agreement of all adult beneficiaries who are receiving or entitled to receive income, or who would receive principal if the trust ended at the time of the agreement. A conservator may agree on a conservatee's behalf, and an attorney in fact holding that power may agree for the beneficiary. When neither path fills the office, California law allows the court to appoint a trustee on petition.

Vacancies commonly arise from a trustee's death, resignation, incapacity or removal by court order, among other causes. The non-court path applies when the instrument names a successor who is able and willing to serve and accepts. The court path becomes relevant when the instrument is silent, when the named successor declines or cannot serve, when beneficiaries cannot reach the agreement section 15660(c) requires, or when family members dispute who should serve.

The procedural vehicle is Probate Code section 17200. Under section 17200(a), except as section 15800 provides, a trustee or beneficiary may petition the court concerning the internal affairs of a trust or to determine whether a trust exists. Section 17200(b) lists proceedings that internal affairs "include, but are not limited to," such as instructing the trustee and determining the existence of a power, duty or right, so the list is not exhaustive. The background on that petition is covered in more detail in the guide to a Probate Code 17200 petition. Under section 17206, the court may make any orders and take any other action necessary or proper to dispose of the matters presented, including appointing a temporary trustee to administer the trust in whole or in part.

Before filing, a petitioner typically gathers:

• The trust instrument and every amendment
• Evidence of the vacancy, such as a death certificate, a resignation letter, a court removal order, or a physician's declaration about incapacity
• The proposed successor's written consent to serve
• Names and contact information for every current trustee and beneficiary

Step 1: Determine Who May File and Which Court Has Jurisdiction

Probate Code section 17200(a) gives standing to a trustee or a beneficiary, and section 15642(a) separately allows a settlor, cotrustee or beneficiary to petition under section 17200 to remove a trustee. A settlor is the person who created the trust. A cotrustee is one of two or more trustees serving together.

In practice, the people who file for an appointment are usually interested persons: a beneficiary, a cotrustee, a living settlor, or someone else with a legally recognized stake in how the trust is run. Standing, meaning the legal right to bring the petition, matters because a petition filed by someone without it can be challenged before the court ever reaches the merits.

Trust matters in California are heard by the Superior Court of California for the county where the trust is being administered, generally the county of the trust's principal place of administration. A petitioner identifies that county from where the trust has actually been managed, which in a disputed case may itself be a contested fact.

When the vacancy exists because a trustee was removed, or because a trustee is accused of misconduct and a removal is being sought, the request for a successor is often folded into a broader section 17200 proceeding rather than filed on its own. That framing affects what the petition has to prove, which Step 2 addresses.

Step 2: Prepare the Petition and Supporting Papers

A petition is a formal written request asking the court for specific orders, supported by facts stated under penalty of perjury. In a successor-trustee matter, it is a drafted court document rather than a fill-in form, and its job is to show the court three things: that a vacancy exists, that the trust instrument's own mechanism does not resolve it, and that the proposed successor is appropriate.

The core contents typically include:

• The trust's name and date, and the identity of the settlor or settlors
• How the vacancy arose and when
• What the instrument says about succession, and why that mechanism failed or does not apply
• The proposed successor trustee, why that person or institution is qualified, and confirmation of willingness to serve
• The specific orders requested

Supporting papers usually include a copy of the trust instrument and amendments, the declaration or records establishing the vacancy, and a declaration from the proposed successor consenting to serve.

Some petitions also ask for a temporary trustee while the case is pending. Section 17206 gives the court authority to appoint one as part of the orders necessary to dispose of the petition. Whether that request fits a particular trust depends on its assets and the circumstances, which an attorney reviewing the file can address.

Step 3: Serve Notice on Interested Parties

If a petition were heard without the beneficiaries knowing about it, the people with the most at stake would have no chance to speak. Probate Code section 17203 prevents that. At least 30 days before the hearing, the petitioner must cause notice of the hearing to be delivered under section 1215 to all trustees, to all beneficiaries (subject to the provisions beginning at section 15800), and to the Attorney General if the petition relates to a charitable trust within the Attorney General's jurisdiction.

Section 17203(b) adds a second group. Any person who is not a trustee or beneficiary, whose right, title or interest would be affected by the petition, and who does not otherwise receive notice must be served with notice of the hearing and a copy of the petition, in the manner the Code of Civil Procedure provides beginning at section 413.10, at least 30 days before the hearing. The court may not shorten that period. Section 17203(c) addresses a person entitled to notice who has been deceased for at least 40 days with no personal representative appointed.

Notice matters because it is what allows beneficiaries and other interested persons to appear at the hearing and object, either to the proposed successor or to the petition itself. The manner of service must also meet the California Rules of Court.

A separate notice duty may follow the appointment. Under Probate Code section 16061.7(a), a trustee must serve a notification in listed events, including when a revocable trust becomes irrevocable because of a settlor's death and whenever there is a change of trustee of an irrevocable trust; the list is partial. That duty belongs to the continuing or successor trustee, and any one cotrustee may serve it. Where that notification is served, it can start the deadline for contesting the trust, described in the guide on how to contest a trust: 120 days from service of the notification, or 60 days from delivery of a copy of the trust's terms during that 120-day period, whichever is later.

Step 4: Attend the Hearing and Obtain the Court's Order

On the hearing date, the court considers the petition, any written objections, and the evidence supporting the proposed appointment. In an uncontested matter the hearing may be brief. When someone objects, the court may set the matter for further briefing, allow discovery (the formal exchange of documents and testimony), or schedule a contested evidentiary hearing.

Under section 17206, the court in its discretion may make any orders necessary or proper to dispose of the matters presented. The outcome is not fixed in advance: the court may appoint the nominee, may consider another candidate, or may issue different orders, including a temporary trustee appointment while disputed questions are resolved.

The signed order is the document that establishes the new trustee's authority. Banks, title companies and other institutions holding trust property typically look to that order before dealing with the successor.

A contest at this stage usually takes one of a few shapes: a beneficiary disputes that a vacancy exists at all, two family members each nominate themselves or a preferred candidate, or the departing trustee resists the change. Each turns on evidence, and the court weighs it rather than accepting either side's account.

Step 5: What Happens After the Order — Transition of Trust Administration

The appointment order places the successor in the office with the duties and powers the trust instrument and California law provide. For beneficiaries who have gone months without clear information, these duties are often the first real lever they have.

Under Probate Code section 16060, the trustee has a duty to keep the beneficiaries reasonably informed of the trust and its administration. Under section 16061, except as section 16069 provides, the trustee must report requested information relating to the administration of the trust and relevant to the beneficiary's interest on a beneficiary's reasonable request.

Accounting is narrower than many beneficiaries assume. Under section 16062(a), except as that section and section 16064 provide, the trustee must account at least annually, at the termination of the trust, and upon a change of trustee, to each beneficiary to whom income or principal is required or authorized in the trustee's discretion to be currently distributed. Not every beneficiary is owed that account. Section 16064 lets a trust instrument, or a beneficiary in writing, waive it, but regardless of either waiver the court may compel the trustee to account upon a showing that it is reasonably likely that a material breach of the trust has occurred.

If the predecessor trustee committed or threatened a breach of trust, Probate Code section 16420(a) allows a beneficiary or cotrustee to bring a proceeding for whichever purpose is appropriate: to compel the trustee to perform duties; to enjoin a breach; to compel redress by payment of money or otherwise; to appoint a receiver or temporary trustee; to remove the trustee; subject to section 18100, to set aside the trustee's acts; to reduce or deny compensation; subject to section 18100, to impose an equitable lien or constructive trust on trust property; and, subject to section 18100, to trace wrongfully disposed property and recover it or its proceeds. A constructive trust is a court order treating property as held for its rightful owner. Section 16420(b) preserves any other appropriate remedy.

Timing on those claims is governed by section 16460(a). If a beneficiary received a written interim or final account or other written report that adequately discloses the existence of the claim, the claim is barred unless a proceeding is commenced within three years after receipt. If no account or report adequately disclosed it, or none was received, the claim is barred unless a proceeding is commenced within three years after the beneficiary discovered, or reasonably should have discovered, the subject of the claim.

Typical timeline

The sequence is consistent even though the calendar is not: gathering documents, preparing and filing the petition, giving notice, the hearing, and the order. The only fixed interval set by section 17203 is the minimum of 30 days between notice and the hearing, which the court may not shorten for persons served under section 17203(b). Beyond that, time depends on the county court's calendar, whether every person entitled to notice was properly noticed, and whether anyone objects. An uncontested petition can move to an order at the first hearing. A contested one may continue across several hearings with briefing and discovery in between. Where trust assets need management before the matter is decided, section 17206 allows the court to appoint a temporary trustee in the interim.

When the Process Gets Complicated: Contested Appointments and Removal

When removal and appointment are sought together

Probate Code section 15642(a) allows a trustee to be removed in accordance with the trust instrument, by the court on its own motion, or on petition of a settlor, cotrustee or beneficiary under section 17200. The grounds in section 15642(b) include a breach of trust; insolvency or other unfitness to administer the trust; hostility or lack of cooperation among cotrustees that impairs administration; the trustee failing or declining to act; excessive compensation; and, with stated exceptions, a sole trustee who is a person described in section 21380(a). Removal and a successor appointment are often addressed in one section 17200 proceeding, with section 17206 allowing interim orders, including a temporary trustee. The broader context is covered in the overview of California trust litigation.

When the vacancy follows alleged self-dealing

Section 16004(a) bars a trustee from using trust property for the trustee's own profit or any purpose unconnected with the trust, and from taking part in a transaction in which the trustee has an interest adverse to the beneficiary. Under section 16004(c), a transaction during the trust between the trustee and a beneficiary, by which the trustee obtains an advantage from the beneficiary, is presumed to violate the trustee's fiduciary duties. That presumption shifts the burden of proof, and it does not apply to agreement terms about the trustee's hiring or compensation. An allegation is not a finding; the court decides whether the facts support it.

When a surcharge is sought

A surcharge is a court order making a trustee pay for harm caused by a breach. Under section 16440(a), a trustee who commits a breach is chargeable, as appropriate, with any resulting loss or depreciation with interest, any profit the trustee made through the breach with interest, or any profit that would have accrued to the trust estate. Under section 16440(b), the court in its discretion may excuse a trustee who acted reasonably and in good faith under the circumstances as known to the trustee, in whole or in part, if equitable. A surcharge is not automatic.

When property has been taken or hidden

Under Probate Code section 859, if a court finds that a person in bad faith wrongfully took, concealed or disposed of trust property, or took, concealed or disposed of it by undue influence in bad faith or through elder or dependent adult financial abuse as California law defines it, that person is liable for twice the value of the property recovered in the action, and may, in the court's discretion, be liable for reasonable attorney's fees and costs. Both depend on the court's finding, and the fee award is discretionary.

Talking Through a Disputed Trustee Vacancy

A successor-trustee petition looks procedural on paper, but when the vacancy grew out of a family disagreement or questions about the last trustee's conduct, it often becomes the opening move in a larger dispute over accounts, property and removal. A consultation with an attorney would typically look at the trust instrument and amendments, how and when the vacancy arose, any accounts or reports already received, and the dates that bear on notice and limitation periods. For readers who are still deciding whether a dispute exists at all, the trust's own succession terms may answer the question first.

To discuss a situation like this with an attorney, you can contact California Trust Litigation Lawyers to request a consultation about your dispute.