Certification of Trust Requirements in California

At a glance

Requirements one by one

Availability and listed contents are different questions

California Probate Code § 18100.5(a) lets a trustee present a certification to any person instead of the trust instrument to establish the trust's existence or terms. The trustee may do so voluntarily or at the other person's request.

The content list in § 18100.5(b) uses “may,” not “shall.” It permits the certification to confirm the trust's existence and date, the settlor and acting trustees, trustee powers, revocability, cotrustee authority, the trust identification number, title format, and a legal description of trust-held real property. Those listed facts are not all mandatory fields merely because they appear in the statute.

The certification itself has mandatory execution statements

Section 18100.5(c) supplies the mandatory core. It says the certification “shall contain” a statement that the trust has not been changed in a way that makes the certification incorrect and a statement that all currently acting trustees are signing. It must be “an acknowledged declaration signed by all currently acting trustees.”

That rule applies to the certification even when the trust instrument lets fewer than all trustees exercise a particular trust power. The document may describe that internal power arrangement under subsection (b)(5), but all acting trustees still sign the certification under subsection (c).

Dispositive terms stay out, but targeted excerpts may be required

Under § 18100.5(d), the certification need not contain the provisions distributing the trust estate. It may attach trust or amendment excerpts and documents about successor- trustee succession.

Section 18100.5(e) lets a person whose interest may be affected require excerpts that identify or establish the trustee's succession or confer power for the pending transaction. The same subsection says this does not create an obligation to provide the dispositive provisions or the entire trust and amendments.

Reliance turns on actual knowledge

Section 18100.5(f) protects a person who relies without actual knowledge that the certification is wrong and permits that person to assume the stated facts without inquiry. A transaction and any lien created through it are enforceable against trust assets unless the recipient actually knows the trustee is acting outside the trust's scope. Beneficiaries retain their rights against the trustee.

The statute does not infer actual knowledge merely because the recipient already holds some or all of the trust instrument. It also does not draw a good-faith inference merely because a person failed to demand a certification under § 18100.5(g).

Real-property recording is optional and public

Section 18100.5(i) allows recording in any county containing all or part of the trust real property and makes the recorded certification a public record of that property. It expressly says the section does not require recording the certification together with a trust-related transfer of title.

The subsection does not say that recording the certification itself transfers title or creates constructive notice of every stated fact. Those are separate property-law questions outside this certification rule.

What trips people up

• The statute's optional fact list is not the same as the mandatory execution core. Subsection (b) says the certification “may” contain listed facts; subsection (c) separately says what it “shall” state and how all acting trustees execute it.
• Internal cotrustee authority does not reduce the certification's signer count. A trust may allow one trustee or a majority to conduct a transaction, but California still requires all currently acting trustees to sign this certification.
• Permission to record is not a command to record. Subsection (i) makes recording optional and expressly rejects a universal certification-with-transfer filing rule.

Common questions

Must the certification disclose the trust's Social Security number or EIN?

Not as a universal statutory requirement. Section 18100.5(b)(6) says the certification may contain the trust identification number. A lawful transaction-specific request is a separate question.

Can the recipient demand the complete trust instrument?

Section 18100.5(e) permits targeted trustee-designation, succession, and transaction- power excerpts. Outside a beneficiary request or trust litigation, a bad-faith demand for additional trust documents can produce damages, including attorney's fees, under § 18100.5(h). The remedy depends on a court's bad-faith finding; the statute is not a blanket rule that every request automatically creates liability.

May one trustee sign when the trust lets one trustee act alone?

No, not for a certification governed by § 18100.5(c). The certification must say that all currently acting trustees are signing and must be an acknowledged declaration signed by all of them.

Does a California certification have to be recorded?

No. Section 18100.5(i) permits recording for a certification related to real property but expressly says it does not require recording alongside a trust-related title transfer.

Statutes and sources

• Cal. Prob. Code § 18100.5(a)–(c) — availability, permissive contents, mandatory statements, all-trustee signatures, and acknowledged-declaration form. Official 2004 California Statutes, chapter 136 (accessed 2026-07-31).
• Cal. Prob. Code § 18100.5(d)–(e) — omitted dispositive terms and permitted trustee-succession and transaction-power excerpts. Official 2004 California Statutes, chapter 136 (accessed 2026-07-31).
• Cal. Prob. Code § 18100.5(f)–(h) — actual-knowledge reliance, enforceability, and bad-faith demand liability. Official 2004 California Statutes, chapter 136 (accessed 2026-07-31).
• Cal. Prob. Code § 18100.5(i) — optional real-property recording and public-record effect. Official 2004 California Statutes, chapter 136 (accessed 2026-07-31).