Most probate mistakes aren’t dramatic, they’re small procedural slips that turn into real delays, disputes, or personal liability for whoever’s running the estate. Here are seven that come up again and again in California probate cases, and how to avoid each one.
Quick answer: The most costly California probate mistakes are missing the 30-day will-lodging deadline, skipping required notices to heirs and creditors, selling property without proper notice to beneficiaries, mixing estate funds with personal funds, skipping a professional appraisal, distributing assets before the creditor claim window closes, and misjudging whether the estate actually qualifies for a simplified process. Several of these can create personal liability for the executor, not just delay.
1. Missing the 30-Day Will-Lodging Deadline
Whoever holds the original will has 30 days from learning of the death to lodge it with the probate court, under Probate Code Section 8200, whether or not a petition for probate has been filed yet. It’s an easy deadline to miss simply because no one realizes it exists until it’s already passed.
2. Skipping Required Notices
Executors have to notify heirs, beneficiaries, and known creditors, but California also requires notice to specific state agencies in certain situations: the Department of Health Care Services if the decedent received Medi-Cal, the Victim Compensation Board if an heir has a corrections record, and, as of a change effective January 1, 2026, the Department of Child Support Services if the decedent had a child support order. All three fall under Probate Code Section 9202 and carry a 90-day window from when letters are issued. Missing one of these isn’t just an oversight, the statute exposes the executor to potential liability.
3. Selling Estate Property Without Proper Notice
Under independent administration, an executor generally can’t sell real property, grant an option on it, or complete other major transactions without first sending beneficiaries a Notice of Proposed Action (Form DE-165), giving them at least 15 days to object. Skipping this step, even with good intentions, can force the transaction into full court supervision or expose the executor to a challenge later. See our full breakdown of what an executor cannot do for the complete list of restrictions.
4. Mixing Estate Funds With Personal Funds
Every estate needs its own bank account, separate from the executor’s personal finances, opened as soon as Letters are issued. Commingling funds, even briefly or with no bad intent, makes an accounting harder to prove and is one of the fastest ways to draw a beneficiary’s suspicion or a court’s scrutiny.
5. Skipping a Professional Appraisal
A certified probate referee has to appraise non-cash assets like real estate, vehicles, and valuable personal property, using the values you personally think an item is worth doesn’t satisfy the court’s requirements. Skipping this step, or using outdated values, can throw off the entire inventory and delay distribution while it gets corrected.
6. Distributing Assets Before the Creditor Claim Window Closes
Creditors have until the later of four months after Letters are issued, or 60 days after they’re personally notified, to file a claim against the estate, per Probate Code Section 9100. Distributing assets to heirs before that window closes is one of the riskier mistakes on this list: if a valid claim comes in afterward, a beneficiary who already received a distribution can be required to pay back their share to cover it, up to the amount they received.
7. Misjudging Whether the Estate Qualifies for a Simplified Process
Under AB 2016 and the small estate affidavit rules, some estates can skip formal probate entirely, a primary residence worth $750,000 or less, or personal property worth $208,850 or less. But applying these shortcuts to an estate that doesn’t actually qualify, or missing that it does and going through unnecessary full probate, both cost time and money. Confirm eligibility against current figures before assuming either way.
If a Mistake Has Already Slowed Things Down
Even a well-run estate can run into delays from one of these issues, and fixing them takes time the court’s calendar doesn’t always accommodate quickly. If you’re an heir and the wait is creating financial pressure regardless of the cause, a probate advance can get you access to part of your inheritance now, independent of when the estate actually closes.
FAQ: Common California Probate Mistakes
What’s the most common mistake executors make?
Missing a required notice deadline, whether to heirs, creditors, or a state agency under Probate Code Section 9202, is one of the most frequent and most consequential, since it can expose the executor to personal liability, not just delay the case.
Can an executor be personally liable for mistakes?
Yes, in specific situations: distributing assets before the creditor claim window closes, missing statutory notice requirements, or selling property without required notice to beneficiaries can all create personal exposure for the executor.
How long do creditors have to file a claim against an estate?
The later of four months after Letters are first issued, or 60 days after the creditor is personally notified, under Probate Code Section 9100. Distributing assets before this window closes carries real risk.
Does skipping a probate referee appraisal really matter?
Yes. The court requires a certified appraisal for non-cash assets, not an executor’s personal estimate. Skipping it, or using an outdated value, can delay the inventory approval and push back the whole timeline.
What happens if I distribute assets too early and a creditor claim comes in later?
A beneficiary who already received a distribution can be required to pay back their share, up to the amount they received, to cover a later valid claim. This is exactly why the creditor claim window matters before any distribution happens.
The Bottom Line
Most of these mistakes are avoidable with the right checklist, not extra legal complexity. If one of them has already slowed your case down and you need cash before it resolves, visit ProbateLend to see if a probate advance can help.
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