After a parent dies, a will appears that no one expected. It is a do-it-yourself form printed from the internet, or a page signed in a hospital room during the final weeks, and it hands a substantial estate to one person. When you look closely, the formalities are off. Maybe only one person witnessed it. Maybe the witnesses signed on different days and were never in the room together. Maybe no one witnessed it at all. In California, those are not just technicalities. A will that was not executed the way the law requires can be denied probate, and a large inheritance can turn on whether the signing was done correctly.
Improper execution is one of the most common and most overlooked reasons a California will fails. A missing witness, witnesses who signed on different days, or a signature that was never actually the testator’s can each be enough to take a defective will off the table entirely and redirect a substantial estate to someone else.
A California will can be denied probate if it was not executed the way the law requires. Under Probate Code Section 6110, a typed will must be in writing, signed by the testator, and signed by two witnesses who were present at the same time and understood the document was the will. If those formalities were missed, the will may be invalid, although two rules can sometimes save it, the harmless error rule, which lets a court honor the will on clear and convincing proof the testator intended it, and the holographic will rule, under which a handwritten will needs no witnesses. You challenge a defective will through a will contest, generally within 120 days after it is admitted to probate. If it is thrown out, the estate passes under the last valid will or under California’s intestacy laws.
What Does California Require for a Will to Be Properly Executed?
The execution requirements for a typed or printed will are set out in Probate Code Section 6110. All of them have to be met, and a failure on any one of them is what opens the door to an improper-execution challenge.
| Requirement | What California law requires |
| In writing | A formal will must be a written document. California does not recognize oral wills. |
| Signed by the testator | Signed by the testator, or in the testator’s name by another person at the testator’s direction and in their presence, or by a conservator under a court order. |
| Two witnesses | Signed by at least two witnesses who were present at the same time and saw the signing or the testator’s acknowledgment of the signature or the will. |
| Witness awareness | The witnesses must understand that the document they are signing is the testator’s will. |
What Counts as Improper Execution?
Most improper-execution cases come down to a problem with the signature or the witnesses. The defects below are the ones that most often surface after death, when it is too late to fix them.
- The testator never signed. The document was prepared but the testator’s signature is missing, or someone else signed without the testator’s direction and presence.
- There were not two witnesses. Only one person witnessed the will, or no one did.
- The witnesses were not present at the same time. The witnesses signed separately, on different occasions, rather than together when the testator signed or acknowledged the will.
- The witnesses did not know it was a will. The people who signed did not understand that the document was the testator’s will.
- The witnesses signed too late. The witnessing has to happen during the testator’s lifetime, not after death.
When Can an Improperly Executed Will Still Be Valid?
A defect in execution does not always end the matter. California provides three routes that can save a will the signing of which was not perfect, and any one of them can defeat an improper-execution challenge.
The Harmless Error Rule
Under the harmless error rule in Probate Code Section 6110, a will that was not properly witnessed can still be admitted if the person offering it establishes, by clear and convincing evidence, that the testator intended the document to be their will. Courts look at both the words of the document and the circumstances surrounding its creation, and the Court of Appeal applied this rule in Estate of Berger (2023) to honor a will despite an execution problem. The rule has real limits. It applies to defects in witnessing, not to a will the testator never signed at all, and clear and convincing evidence is a demanding standard.
A Valid Holographic Will
Even if a typed will fails, the document may still qualify as a holographic will. Under Probate Code Section 6111, a handwritten will is valid without any witnesses if the signature and the material provisions are in the testator’s own handwriting. A poorly witnessed will that happens to be handwritten and signed can sometimes be admitted on this basis instead.
A Will Validly Executed in Another State
A will does not have to satisfy California’s formalities if it satisfied another jurisdiction’s. Under Probate Code Section 6113, a written will is validly executed if it complied with California law, with the law of the place where it was signed, or with the law of the testator’s domicile. A will signed correctly under another state’s rules can be honored in California even if it would not meet Section 6110 on its own.
What About Electronic or Remotely Witnessed Wills?
Many people assume a will can be signed and witnessed online the way other documents are. In California, that assumption is risky. The state generally still requires a physical written will signed by the testator and witnessed in person, and it has not adopted the broad electronic-will legislation that some other states have. A will that exists only in electronic form, or that was witnessed only over video, may be challenged as improperly executed. This area of the law is evolving, so anyone relying on a nontraditional signing should expect close scrutiny in probate court.
The Interested Witness Problem
A common and confusing situation arises when one of the witnesses is also a beneficiary. This does not make the will invalid. Under Probate Code Section 6112, a will is not void simply because an interested witness signed it. Instead, the law presumes that the gift to that witness was procured by duress, menace, fraud, or undue influence. If the witness cannot rebut that presumption, and there were not two other disinterested witnesses, the gift to the witness is reduced to no more than what that person would have received if there were no will at all. The document survives, but the suspect gift may not.
How Do You Challenge an Improperly Executed Will?
Improper execution is raised through a will contest in the probate court. The person offering the will carries the burden of proving it was properly executed under Probate Code Section 8252, and at trial the available subscribing witnesses are produced and examined about how the signing actually happened. Only an interested person, generally someone who would inherit if the will were set aside, has standing to bring the challenge, and the contest is usually filed before the will is admitted to probate or within 120 days afterward under Probate Code Section 8270.
Improper execution is its own ground, separate from questions about whether the testator had mental capacity or was subjected to undue influence. In practice these issues often appear together, because a will that was rushed through without proper witnesses is frequently a will that someone wanted signed quickly and quietly.
Will a No Contest Clause Penalize Me for Challenging the Will?
If the will contains a no contest clause, challenging it can feel dangerous, but the risk is limited. Lack of due execution is one of the grounds California treats as a direct contest, and a no contest clause is only enforced against a direct contest that is brought without probable cause. A good-faith challenge to a will that appears to have been signed or witnessed improperly, supported by real evidence, generally does not put an existing inheritance at risk, even if the challenge does not ultimately prevail.
Key Takeaways
- A California typed will must be in writing, signed by the testator, and signed by two witnesses present at the same time who understood it was the will, under Probate Code Section 6110.
- Common execution defects include a missing signature, fewer than two witnesses, witnesses who were not present together, and witnesses who did not know the document was a will.
- The harmless error rule can save a defectively witnessed will if the proponent proves by clear and convincing evidence that the testator intended it, but it does not excuse a will the testator never signed.
- A flawed will may still be valid as a holographic will under Probate Code Section 6111, or under Probate Code Section 6113 if it was validly executed in another state.
- California generally does not recognize electronic or video-witnessed wills, so a nontraditional signing carries a real risk of being found improperly executed.
- An interested witness does not void the will, but under Probate Code Section 6112 the gift to that witness may be reduced unless the presumption of wrongdoing is rebutted.
- Improper execution is challenged through a will contest, generally within 120 days after the will is admitted to probate under Probate Code Section 8270.
Frequently Asked Questions
Q: What are the requirements for a valid will in California?
A: Under Probate Code Section 6110, a typed will must be in writing, signed by the testator (or in the testator’s name by another person at their direction, or by a conservator under a court order), and signed by at least two witnesses who were present at the same time and understood the document was the testator’s will. A handwritten will can be valid without witnesses under Probate Code Section 6111.
Q: Does a missing witness automatically make a will invalid in California?
A: Not always. California’s harmless error rule allows a court to treat a defectively witnessed will as valid if the person offering it proves by clear and convincing evidence that the testator intended the document to be their will. It is a high standard and far from guaranteed, which is why proper execution still matters.
Q: Is a notarized will valid in California?
A: Notarization alone does not satisfy California’s execution requirements. A typed will still needs two witnesses present at the same time. Notarization can add a layer of authenticity, but it does not replace the witness requirement.
Q: Can a will signed in another state be valid in California?
A: Often yes. Under Probate Code Section 6113, a written will is validly executed if it complied with California law, the law of the place where it was executed, or the law of the testator’s domicile. A will properly signed under another state’s rules can be honored here.
Q: What happens if a beneficiary served as a witness?
A: The will is not invalid, but Probate Code Section 6112 creates a presumption that the gift to the witness who is also a beneficiary was procured by wrongdoing. Unless that witness rebuts the presumption, or two other disinterested witnesses also signed, the gift can be reduced to what the witness would have received without the will.
Q: Are electronic or video-witnessed wills valid in California?
A: California generally still requires a physical written will signed by the testator and witnessed in person, and it has not adopted broad electronic-will legislation. An electronic-only or video-witnessed will may be challenged as improperly executed, and this area of the law is still developing.
Q: How long do I have to challenge an improperly executed will?
A: Generally 120 days after the will is admitted to probate under Probate Code Section 8270, and you can also object before it is admitted. Acting quickly matters because the deadline runs from admission, not from the date of death.
Challenge a Defective Will Before the Deadline
If a will that controls a significant estate appears to have been signed or witnessed improperly, the right to challenge it does not last long, and the witnesses’ memories and the surrounding evidence are easiest to secure early. Whether you are trying to set aside a defective will or defend a valid one, the execution details matter enormously, and they are exactly the kind of facts that get harder to prove with time.
The Casiano Law Firm handles will contests and high-stakes estate disputes throughout San Diego County, Orange County, Los Angeles County, Riverside County, and San Bernardino County. If you have concerns about how a will was executed, contact the Casiano Law Firm today before the 120-day window closes and the execution defect becomes permanent.
