Probate Litigation

California Probate Litigation Attorney — Contested Wills, Trust Disputes, and Fiduciary Accountability

Not every estate administration proceeds according to plan. When a will appears to have been executed under suspicious circumstances, when a trustee is mismanaging assets, or when an executor is favoring one beneficiary at the expense of others, the people with the most at stake often find themselves with no path forward except through the courts. A California probate litigation attorney handles exactly these disputes — the contested proceedings that arise when someone in a position of trust over an estate or trust fails to fulfill that trust, or when the documents themselves are the product of fraud, incapacity, or manipulation.

California probate litigation spans a wide range of contested matters. Will contests under Probate Code §8252 challenge the validity of a will on any of seven statutory grounds, from lack of testamentary capacity to undue influence to outright fraud. Trust disputes raise similar claims and carry their own procedural requirements and deadlines. Removal petitions under Probate Code §§8500–8505 provide a mechanism to displace an executor or administrator who is failing to administer the estate properly. Surcharge petitions hold fiduciaries financially accountable for losses caused by their mismanagement. Each of these proceedings requires a sophisticated understanding of California's Probate Code, the rules of evidence applicable in probate court, and the strategic considerations that distinguish cases that settle from cases that need to go to trial.

Bay Legal PC represents beneficiaries, heirs, trustees, and other interested persons in contested probate and trust matters throughout California. We bring the same disciplined, thorough approach to probate litigation that the most complex estates demand — analyzing the legal and factual basis for each claim, preserving key evidence, and pursuing resolution through the most efficient and effective path available, whether that means negotiated settlement, mediation, or contested hearing before the probate court.

Will Contests in California Probate Litigation — Grounds Under Prob. Code §8252

A will contest is a formal legal proceeding challenging the validity of a will — either a petition filed with the probate court before the will is admitted, or a challenge brought in the context of ongoing probate administration. Under Probate Code §8252, a will may be contested on seven distinct statutory grounds: (1) lack of due execution, meaning the will was not executed with the formalities required by California law — two witnesses, the testator's signature, and the procedural requirements of Probate Code §6110; (2) lack of testamentary intent, meaning the decedent did not intend the document to operate as a will; (3) lack of testamentary capacity, meaning the decedent did not meet the legal standard for making a will at the time of execution; (4) undue influence, meaning someone overcame the decedent's free will and caused them to execute a will they would not otherwise have made; (5) fraud, meaning the decedent was deceived into signing the will or into its contents; (6) duress, meaning the decedent was coerced; and (7) revocation, meaning the will at issue was subsequently revoked by a later will, by physical act, or by operation of law.

In practice, the most frequently litigated grounds are lack of testamentary capacity and undue influence, often alleged together. Testamentary capacity under Probate Code §6100.5 requires that the testator be at least 18 years old and, at the time of execution, be of “sound mind.” This means understanding the nature of the testamentary act, understanding and recollecting the nature and situation of their property, remembering and understanding their relationships to living descendants, spouse, and parents, and not suffering from a mental disorder with symptoms that include delusions or hallucinations that caused the person to devise property in a way they would not otherwise have done. Evidence of dementia, Alzheimer's disease, psychosis, or acute cognitive impairment at or near the time of will execution is central to capacity-based challenges.

Will contest strategy requires early attention to a critical procedural fact: under Probate Code §8004, a will contest must be filed either before the will is admitted to probate, or — if the contest is based on grounds that appear on the face of the will — within 120 days after the will is admitted. Once a will is admitted and the time for contest has passed, challenging it becomes significantly more difficult. Identifying the potential grounds for a challenge, investigating the circumstances of execution — including the identity of the drafting attorney, the presence of interested parties at signing, and any changes in estate plan near the end of life — and moving quickly are the hallmarks of effective will contest representation.

Undue Influence — California’s Statutory Framework and Presumptions

Undue influence is defined in Probate Code §86 by reference to Welfare and Institutions Code §15610.70, which identifies it as “excessive persuasion that causes another person to act or refrain from acting by overcoming that person's free will and results in inequity.” The definition is deliberately broad and fact-specific. California courts evaluate undue influence by examining four factors: (1) the vulnerability of the victim — including age, illness, diminished capacity, dependency, or isolation; (2) the influencer's apparent authority — including a position as caregiver, financial advisor, fiduciary, family member, or other trusted person; (3) the actions or tactics used by the influencer — including controlling the victim's access to information, isolating them from family, using affection or threats, or controlling the drafting of estate documents; and (4) the equity of the result — including the nature, value, and context of what was given and whether the testamentary transfer seems consistent with the decedent's prior expressions of intent.

Beyond the common law analysis, Probate Code §21380 creates a statutory presumption of invalidity for donative transfers — gifts made through wills, trusts, or other estate planning documents — in favor of certain categories of persons who had a position of trust or access over the transferor. Under §21380, a donative transfer is presumed to be the product of fraud or undue influence if the transferee is: (a) the person who drafted the instrument; (b) a person who transcribed the instrument and has a fiduciary relationship with the transferor; (c) a care custodian of a dependent adult transferor; (d) a cohabitant or employee of the care custodian; or (e) a person who had a confidential relationship with the transferor and took a leading role in procuring execution. When the presumption applies, the burden shifts to the beneficiary to rebut it — typically by obtaining a Certificate of Independent Review signed by an independent attorney who counseled the transferor. Failing to obtain such a certificate leaves a beneficiary in a presumptively invalid position that is difficult to overcome at trial.

The practical implication for beneficiaries and interested persons is significant. If you suspect that an elderly or vulnerable person changed their estate plan after coming under the influence of a new caregiver, a recently introduced companion, or a family member who isolated them from others, Probate Code §21380 may provide an avenue for challenging that transfer without needing to prove undue influence from scratch. Identifying whether the presumption applies — and building the factual record that supports it — is a core part of how Bay Legal approaches these cases.

Executor and Administrator Removal Under Probate Code §§8500–8505

The personal representative of an estate — whether called an executor (when named in a will) or an administrator (when appointed by the court in the absence of a will) — holds one of the most powerful fiduciary positions in California law. They control the estate's assets, manage its property, pay its debts, and ultimately distribute it to beneficiaries. When a personal representative abuses that power — through self-dealing, favoritism, mismanagement, or simple neglect — beneficiaries and other interested persons have a statutory mechanism to remove them.

Under Probate Code §8500, any “interested person” — a defined term under §48 that includes beneficiaries, heirs, creditors, and others with a financial stake in the estate — may petition the probate court to suspend the personal representative's powers or remove them entirely. The grounds for removal are enumerated in Probate Code §8502 and include: waste, embezzlement, or mismanagement of estate property; long-continued failure to perform the duties of the office; incapacity; conviction of a felony; gross incompetence; and fraudulent conduct or misrepresentation to the court. These grounds range from serious financial misconduct to simple but persistent failure to administer the estate in a timely manner. A personal representative who has held the estate open for years without completing administration, who has commingled estate funds with personal funds, or who has sold estate property to a related party at below-market prices may be subject to removal on multiple grounds simultaneously.

When the situation is urgent — when there is an immediate risk that the personal representative will dissipate, damage, or conceal estate assets — Probate Code §8503 authorizes the court to temporarily suspend the personal representative's powers on an expedited basis, pending a full hearing. And under §8505, if a personal representative disobeys a court order, they may be removed without further notice. These provisions provide important tools for beneficiaries facing a personal representative who is actively harming the estate while the removal petition is pending. Bay Legal regularly advises beneficiaries on whether the circumstances warrant seeking emergency relief under §8503 alongside the primary removal petition, and how to build the evidentiary record needed to support both.

Trust Contests, No-Contest Clauses, and Surcharge Petitions

Trust disputes in California are governed by many of the same substantive rules as will contests — lack of capacity, undue influence, fraud, duress, and mistake are all grounds to invalidate a trust or a trust amendment — but with a critical procedural distinction. Under Probate Code §16061.7, a trustee who is administering a trust that has become irrevocable (typically upon the settlor's death) must serve a notice on all beneficiaries and heirs. Once that notice is served, the recipient has only 120 days to file a petition contesting the trust. Missing this deadline results in the trust becoming final and uncontestable, regardless of the merits. The 120-day clock is a hard deadline — courts have consistently refused to extend it absent extraordinary circumstances. This means that anyone who receives a §16061.7 notice and has concerns about the trust's validity must act quickly and consult an attorney immediately.

No-contest clauses — provisions in wills and trusts that purport to disinherit a beneficiary who challenges the instrument — add another layer of complexity to probate litigation strategy. Under Probate Code §21310 et seq., California takes a measured approach to no-contest clauses: they are enforceable, but only for specific types of challenges and only if the challenge was brought without “probable cause.” If a beneficiary has probable cause to bring a contest — meaning a reasonable person, properly advised and informed, would consider the challenge well-grounded — the no-contest clause will not be enforced against them even if the contest ultimately fails. This framework reflects the legislature's judgment that legitimate challenges to instruments procured by fraud or undue influence should not be suppressed by the fear of disinheritance. Evaluating whether probable cause exists, and advising clients on the risk that a no-contest clause poses to their continued share of the estate, is a critical early step in any trust or will contest matter.

Surcharge petitions are a distinct but related form of probate litigation in which a beneficiary asks the court to hold a fiduciary — a personal representative, trustee, or other person with control over estate or trust assets — financially accountable for losses caused by their breach of duty. A surcharge is essentially a money judgment against the fiduciary for the difference between what the estate or trust is actually worth and what it would have been worth had the fiduciary properly performed. Common grounds for surcharge include failure to invest trust assets prudently under the Prudent Investor Rule (Probate Code §16045 et seq.), improper distributions that depleted assets, self-dealing transactions, failure to sell a depreciating asset, and excessive fees charged to the estate. Because the trustee or personal representative often has access to the assets themselves, Bay Legal evaluates whether asset-preservation remedies — including court orders freezing distributions or requiring the posting of a bond — are appropriate alongside a surcharge claim.

How Bay Legal Approaches a California Probate Litigation Matter

1. Initial case evaluation. We review all available documents: the will or trust, any prior drafts or prior estate plans, the decedent's medical records, financial records, correspondence with the person alleged to have exerted influence, and any communications between the decedent and the drafting attorney. This review establishes whether viable legal grounds exist and which theory of the case is strongest.
2. Standing and grounds analysis. Not every interested person has standing to bring every type of probate litigation. Under Probate Code §8252 and related provisions, standing to contest a will or trust requires that the contestant be an “interested person” who would benefit if the challenged instrument is declared invalid. We confirm standing and identify the strongest legal grounds before advising on whether to proceed.
3. Pre-filing strategy and deadlines. Probate litigation is deadline-driven. Will contests must be filed before or within 120 days after the will is admitted to probate under Probate Code §8004. Trust contests must be filed within 120 days after the §16061.7 notice. We map all applicable deadlines and build a litigation calendar from the outset, so no filing window is lost.
4. Petition filing and service. We prepare and file the initial petition with the probate court, serve all required parties, and comply with any notice requirements specific to the type of proceeding. For removal petitions under §8500, we assess whether a concurrent motion for emergency relief under §8503 is warranted based on the risk to estate assets.
5. Discovery and evidence development. Probate litigation involves the full range of civil discovery tools: depositions of the drafting attorney, the subscribing witnesses, the alleged influencer, and the personal representative; subpoenas for financial and medical records; document requests targeting communications and transfers made in the period leading up to the contested instrument's execution. We build the factual record through disciplined discovery.
6. Mediation and settlement negotiations. Many probate disputes resolve through mediation, which allows parties to reach practical, creative resolutions that a court cannot order — such as restructured distributions, revised fiduciary compensation, or trust modifications that all parties accept. Bay Legal represents clients in mediation with a clear-eyed view of litigation risk and a focus on durable solutions.
7. Trial. When a negotiated resolution is not achievable, we prepare and try cases in the probate court. Probate trials involve both evidentiary and procedural rules specific to the Probate Code, as well as the Code of Civil Procedure. We bring the same preparation and discipline to probate court as any civil trial — with careful attention to how judges and commissioners in probate evaluate competing factual accounts.

Scope of Bay Legal’s Probate Litigation Services

Bay Legal PC handles contested probate and trust matters throughout California — including will contests, trust contests, executor and administrator removal proceedings, breach of fiduciary duty claims, surcharge petitions, no-contest clause analysis, and spousal property disputes under Probate Code §13650. We represent beneficiaries, heirs, trustees, and other interested persons in all phases of probate litigation, from initial evaluation through trial. We do not handle criminal matters, personal injury claims, or civil litigation unrelated to estate or trust administration. Matters involving federal tax litigation, criminal charges against a fiduciary, or contested guardianship and conservatorship proceedings may be handled in consultation with specialists in those fields.

California Probate Litigation FAQs

What are the grounds to contest a will in California?

Under Probate Code §8252, a will may be contested on seven grounds: lack of due execution (the will was not properly signed and witnessed under Probate Code §6110), lack of testamentary intent (the decedent did not intend the document to be a will), lack of testamentary capacity (the decedent did not meet the legal standard under Probate Code §6100.5 at the time of signing), undue influence (someone overcame the decedent's free will), fraud (the decedent was deceived about the nature of the document or its contents), duress (the decedent was coerced), and revocation (the will was later invalidated by a subsequent will or by physical act). The most commonly litigated grounds are lack of capacity and undue influence, and they are often alleged together. A will contest must generally be filed before the will is admitted to probate, or within 120 days after admission, under Probate Code §8004.

How does California define undue influence in a probate case?

California defines undue influence in Probate Code §86 by incorporating the definition in Welfare and Institutions Code §15610.70: “excessive persuasion that causes another person to act or refrain from acting by overcoming that person's free will and results in inequity.” Courts evaluate four factors: the victim's vulnerability (including age, illness, isolation, or cognitive decline); the influencer's apparent authority (such as a caregiver, attorney, or family member with control over the decedent's affairs); the actions and tactics used by the influencer (including isolation, control of information, or manipulation); and the equity of the result (whether the transfer makes sense in context or represents an unexplained departure from the decedent's prior intentions). Additionally, Probate Code §21380 creates a statutory presumption of invalidity for gifts to certain persons in a position of trust — including the drafter of the instrument and care custodians of dependent adults — shifting the burden of proof to the beneficiary to demonstrate the transfer was not the product of undue influence.

What can I do if the executor or trustee is mismanaging the estate?

If an executor or administrator is failing to properly administer the estate, any interested person under Probate Code §48 — including beneficiaries, heirs, and creditors — may petition the probate court under Probate Code §8500 to suspend or remove the personal representative. The grounds for removal under §8502 include waste, embezzlement, or mismanagement of estate property; long-continued failure to perform duties; incapacity; felony conviction; gross incompetence; and fraud. If there is an immediate danger to estate assets, §8503 authorizes the court to temporarily suspend the personal representative's powers on an expedited basis while the removal petition is pending. For trustees of a trust (as opposed to a court-supervised estate), removal is governed by the terms of the trust itself and by Probate Code §17200, which allows any interested person to petition the court to compel a trustee to perform their duties or to remove a trustee who has breached their fiduciary obligations.

Can I contest a trust in California, and how long do I have?

Yes — a trust can be challenged on many of the same grounds as a will: lack of capacity, undue influence, fraud, duress, or mistake. However, trust contests are subject to a strict 120-day deadline triggered by the trustee's service of a Probate Code §16061.7 notice. When a revocable trust becomes irrevocable — typically upon the settlor's death — the trustee is required to notify all beneficiaries and heirs of the trust's existence and of their right to request a copy of the trust instrument. Once you receive that notice, you have 120 days to file a petition contesting the trust or any of its provisions. Failing to file within 120 days results in the trust becoming conclusively binding, regardless of the merits of any potential challenge. If you have received a §16061.7 notice and have concerns about the circumstances under which the trust was created or amended, consulting a probate litigation attorney immediately is essential.

What is a no-contest clause and will it prevent me from contesting a will or trust in California?

A no-contest clause (also called an in terrorem clause) is a provision in a will or trust that states that any beneficiary who contests the instrument will be disinherited or will forfeit their share. Under Probate Code §21310 et seq., California enforces no-contest clauses — but only under specific circumstances and only against challenges brought without “probable cause.” If you have probable cause to bring a contest (meaning a reasonable person with full knowledge of the facts, properly advised by an attorney, would consider the challenge well-founded), the no-contest clause will not be enforced against you even if the contest is ultimately unsuccessful. The practical effect is that a beneficiary who has genuine evidence of incapacity, undue influence, or fraud can pursue a contest without automatically losing their inheritance — but a speculative or poorly grounded challenge may trigger disinheritance. Evaluating whether probable cause exists is one of the first and most important analyses in any contested probate or trust matter.

What is a surcharge petition in California probate?

A surcharge petition is a legal proceeding in which a beneficiary asks the probate court to hold a personal representative or trustee financially liable for losses caused to the estate or trust as a result of their breach of fiduciary duty. The “surcharge” is the monetary amount the fiduciary must pay to make the estate whole — essentially, the difference between what the estate would have been worth had the fiduciary properly performed their duties and what it is actually worth due to the breach. Common grounds for a surcharge include imprudent investment of trust assets (in violation of the Prudent Investor Rule under Probate Code §16045 et seq.), improper distributions, self-dealing transactions that benefited the fiduciary at the estate's expense, failure to sell a depreciating asset in a timely manner, and excessive fees. A surcharge petition is typically filed as part of — or alongside — a petition to remove the fiduciary, and may be accompanied by requests for interim relief to prevent further dissipation of assets while the proceeding is pending.

How long does probate litigation take in California?

The timeline for California probate litigation varies significantly depending on the complexity of the dispute, whether the parties pursue settlement or proceed to trial, and the court's calendar in the relevant county. Simple contested matters — such as a removal petition where the grounds are well documented and relatively undisputed — may resolve in 3–6 months. Will contests and trust contests that involve significant factual disputes, competing expert witnesses on capacity or undue influence, and extensive discovery can take 1–3 years or longer to reach a final resolution. Cases that proceed to a contested trial before a probate judge typically take longer than those resolved through mediation, which can often bring matters to a close in a concentrated period of days once the parties and a skilled mediator are prepared. Bay Legal evaluates the likely timeline honestly with clients at the outset, including the costs and benefits of each path to resolution.

Related Resources

• Estate planning and probate overview
• Probate administration (full probate process)
• Trust administration
• Small estate affidavit (simplified transfer without probate)

• California Probate Code §8252 — Grounds for will contest
• California Courts — Probate Division self-help resources