If you’re handling a loved one’s estate in California and there’s no will, you might need to file an affidavit of heirship. But before you draft or sign one, it matters who can legally submit it. California has specific rules not just about who qualifies as an heir, but who is allowed to sign and file the affidavit itself. Getting this wrong can delay property transfers, trigger objections from other heirs, or even make the affidavit invalid in court.

Who counts as a “qualified affiant” under California law?

In California, the person who signs the affidavit the “affiant” must meet two basic conditions: they must be at least 18 years old, and they must have personal knowledge of the decedent’s family history, marriage, children, and death. This isn’t about being related it’s about knowing the facts. A neighbor who attended the funeral and knew the decedent for 30 years may qualify. A distant cousin who’s never met the decedent does not even if they’re technically an heir.

You’ll often see people mistakenly assume only heirs can sign. That’s not true. In fact, California law explicitly allows non-heirs to serve as affiants, as long as they meet the knowledge and age requirements. What matters is reliability not bloodline.

Can more than one person sign the affidavit?

Yes and in many cases, it’s wise to have two affiants. California doesn’t require multiple signers, but courts and title companies often prefer it. Two independent witnesses with firsthand knowledge strengthen credibility. For example, if the decedent was estranged from their siblings but stayed close with a longtime friend and a former coworker, both could sign each attesting to different parts of the family story.

It’s also common for heirs to co-sign with someone outside the family. Just remember: each affiant must swear separately to what they personally know not what someone else told them. Hearsay doesn’t count.

What happens if the wrong person signs?

If someone without personal knowledge signs like a child relying solely on what their parent said the affidavit may be challenged later. Title companies routinely reject affidavits where the affiant’s relationship to the decedent isn’t clearly explained or where statements appear copied or vague. One common mistake is using boilerplate language like “to the best of my knowledge,” without adding concrete details (e.g., “I attended the decedent’s wedding in 1992 and visited their home weekly until 2020”).

Another issue arises when heirs try to file on behalf of others say, a sibling signs for both themselves and a deceased brother. That’s not allowed. Each affiant must sign their own sworn statement.

Do executors or administrators get special authority to file?

No. If there’s no probate proceeding, there’s no court-appointed executor or administrator so that role doesn’t exist yet. An affidavit of heirship is often used because there’s no formal administration. So the person filing isn’t acting under court authority. They’re simply providing factual testimony to help establish heirship informally.

If probate has already started, though, an affidavit of heirship usually isn’t appropriate. You’d instead work through the probate process. You can read more about when an affidavit fits and when it doesn’t in our overview of legal requirements.

Where do you file it and does that affect who can submit?

You don’t file the affidavit with a court in most cases. Instead, you record it with the county recorder’s office where the real property is located. That means the affiant doesn’t need special permission or credentials just the ability to appear before a notary and swear under penalty of perjury.

That said, some counties ask for additional documentation, like a certified copy of the death certificate. And title companies reviewing the affidavit for a sale or refinance may request more detail about the affiant’s connection to the decedent. That’s why it helps to choose someone whose relationship is easy to verify like a former employer with old pay stubs or a clergy member with dated service records.

Next step: Check eligibility before drafting

Before preparing an affidavit of heirship, confirm that the person signing meets California’s affiant criteria. Ask yourself:

  • Is the signer over 18?
  • Can they describe specific events or relationships involving the decedent without relying on secondhand information?
  • Are they willing to sign under oath and appear before a notary?
  • Have you reviewed the full list of eligibility conditions for filing in California?

If you’re unsure whether a particular person qualifies or whether an affidavit is the right tool for your situation you can review real examples of valid and rejected affidavits or consult a local probate attorney. For official guidance, the California Probate Code sections 216 and 217 outline the statutory framework for affidavits of heirship on the California Legislative Information site.