Trust Administration in Hidden Hills

Serving as successor trustee of a Hidden Hills estate means answering to beneficiaries who can afford to dispute how you did it. Hidden Hills estates are complex, with multiple properties, business interests, entertainment industry assets, intellectual property and investment portfolios. A trustee who missteps can face personal liability that is financially devastating, so each step of the administration is worth doing in a way you can document.

I am an estate planning attorney serving Hidden Hills and the surrounding area. I do this work over Zoom or phone, and a mobile notary comes to you for the signing. Hidden Hills is in Los Angeles County, and trust disputes go to the LA County Superior Court. I keep trustees out of that courthouse. For the planning side, see the Hidden Hills estate planning page.

The 60-day notice starts the contest clock

Cal. Prob. Code §16061.7 requires notice to every beneficiary and statutory heir within 60 days of the settlor’s death. The notice starts a 120-day contest window. If it isn’t sent, that shortened period never begins, so the general limitation rules apply instead and a beneficiary may be able to challenge the trust after distribution is complete.

In Hidden Hills estates with prior marriages, children from different relationships, and beneficiaries in different states, identifying every required notice recipient correctly matters. I make sure the notice is prepared correctly and sent to everyone who is required to receive it.

The 150-day county filing sets the property tax bill on the house

When the settlor of a trust dies, the trustee also files a change in ownership statement with the county recorder or assessor within 150 days after the date of death (Rev. & Tax. Code § 480(b)). For a Hidden Hills home that’s the Los Angeles County recorder or assessor. If the assessor mails a written request and the statement isn’t filed within 90 days, the penalty is the greater of $100 or 10% of the taxes on the new base year value, capped at $5,000 for a home with the homeowners’ exemption and $20,000 without it, when the failure isn’t willful (§ 480(c)).

The filing also decides what the house is taxed on. A child who moves into the parent’s home within one year and files for the homeowners’ exemption within a year can claim the exclusion under § 63.2. The new taxable value is then the parent’s taxable value plus the amount by which market value exceeds the parent’s taxable value plus $1,044,586 (the cap for transfers from February 16, 2025 to February 15, 2027). This table uses a parent taxable value of $1,800,000, which is my example, for illustration only, and not a Los Angeles County figure or a prediction.

Scenario	Parent’s taxable value plus the cap	Value added	New taxable value
Child moves in, home worth $5,134,415	$2,844,586	$2,289,829	$4,089,829
Home isn’t the child’s principal residence	Exclusion doesn’t apply	Full reassessment	$5,134,415

The Proposition 19 calculator and the guide to filing the exclusion take it from there.

Selling or holding the house inside the gate

The Hidden Hills Community Association governs the whole community from its office at 24549 Long Valley Rd. Before a trustee lists the house or distributes it to a beneficiary, ask the association for its governing documents and any approval or transfer steps. I don’t assume what they say.

A buyer’s title company will ask for proof that the trustee can sign. A certification of trust does that without handing over the trust: the trustee presents it in place of the trust instrument, it can confirm the trustee’s powers and the legal description, and it doesn’t have to include the dispositive terms (Prob. Code § 18100.5). A signed certification can be recorded with the county recorder. Three gatehouses control access to the community, so plan appraiser, broker, and inspector access with the association ahead of time. Certification of trust in California explains what goes in it.

Production company interests, royalties and horses need decisions you can document

A Hidden Hills estate may include an interest in a production company, royalty rights from intellectual property, or other assets that require active management decisions during administration. The trustee must make those decisions prudently, document them carefully, and avoid any self-dealing or favoritism. At Hidden Hills estate values, beneficiaries have the financial incentive to pursue the trustee personally if they believe decisions were made improperly.

I help trustees understand what they can and cannot do, when they need court approval, and how to document each major decision as you make it, including decisions about business interests and royalty streams. This connects to high-net-worth estate planning for ongoing structural questions. For assets outside the trust, see probate.

Informing beneficiaries and accounting to them build the record that answers a removal petition

Beyond the initial notice, Cal. Prob. Code §16060 requires the trustee to keep beneficiaries reasonably informed of the trust and its administration on an ongoing basis. Cal. Prob. Code §16062 requires the trustee to account to beneficiaries at least annually, and again on a change of trustee or termination of the trust. For a Hidden Hills trust holding production company interests, real estate, and investment accounts, the accounting has to reflect all of it accurately, with supporting documentation the trustee can produce if questioned.

A beneficiary who thinks the trustee has failed at either duty can file the petition Cal. Prob. Code §15642 authorizes, to remove a trustee for breach of trust. A trustee who administers the trust properly under §16060 and §16062 has the paper trail to meet it.

What a trustee can be paid, and what the probate schedule would have allowed

A trust administration has no statutory fee schedule and no court order approving fees. If the trust doesn’t set the trustee’s pay, the trustee is entitled to reasonable compensation under the circumstances (Prob. Code § 15681). That’s a flexible standard, so it helps to know the number the probate schedule would have produced for the same asset.

On the Zillow Home Value Index for August 2026, the typical Hidden Hills home is worth $5,134,415. The schedule in §§ 10800 and 10810 would allow $64,344 to the executor and the same to the attorney, or $128,688 together.

Slice of the estate	Rate	Fee for each of the executor and the attorney
First $100,000	4%	$4,000
Next $100,000	3%	$3,000
Next $800,000	2%	$16,000
Remaining $4,134,415	1%	$41,344
Total, each		$64,344

These figures assume an estate of only the typical home, figured on gross value with no deduction for a mortgage (§ 10810(b)). A trustee isn’t bound by them. The comparison still helps: a trustee who bills far above it should have a reason written down. See trustee compensation in California for how the reasonableness standard works.

Questions Hidden Hills clients ask

The estate includes production company interests. How do I manage those as trustee?

The trustee steps into the settlor’s ownership position in the company. You have whatever rights the ownership interest carries. Major decisions about the company may require coordination with other owners and may have implications for the company’s operations. Business counsel familiar with entertainment company governance is important alongside the trust attorney.

There are horses on the property. Who is responsible for them immediately?

The trustee has immediate authority and responsibility for trust assets, including horses. Decisions about their care cannot wait for probate proceedings. Document all care decisions and expenses from day one. If the horses are a business asset, additional considerations apply.

A beneficiary is threatening to challenge the trust. What do I do?

Call an attorney before making any distributions and before responding to threats. Threats of challenge do not by themselves stop administration, but they need to be taken seriously and handled correctly. Making the wrong distribution in response to a threat can create problems. Making a wrong distribution that triggers the actual challenge is worse.

How often do I actually have to account to the beneficiaries, and what happens if I do not?

Under §16062, an accounting is required at least annually, and also when the trust changes trustees or terminates. A trustee who fails to account or provide information under §16060 gives beneficiaries grounds to petition for removal under §15642, and can be held personally liable for losses the failure caused.

Can a beneficiary actually get me removed as trustee, and on what grounds?

Yes. Under §15642, a beneficiary can petition the court to remove a trustee for breach of trust, including failure to account, self-dealing, or mismanagement of trust assets. Documented, prudent administration under §16060 and §16062 is the trustee’s strongest protection against such a petition succeeding.

How much can the trustee charge on a $5 million estate?

If the trust doesn’t set the compensation, the trustee is entitled to reasonable compensation under the circumstances (Prob. Code § 15681). The probate fee schedule doesn’t govern a trust. On a $5,134,415 home, though, it would allow $64,344 to each of the executor and the attorney, which makes a useful comparison point.

How long after the death do we have to tell the county assessor?

The trustee files a change in ownership statement within 150 days after the date of death (Rev. & Tax. Code § 480(b)). Missing it after the assessor’s written request can add a penalty. If a child wants the Proposition 19 exclusion for a parent’s home, a separate claim is required under § 63.2.

Will the title company make me hand over the whole trust?

Not if you give it a certification of trust. Prob. Code § 18100.5 lets the trustee present a certification in place of the trust instrument, and it doesn’t have to include the terms that say who gets what. All currently acting trustees sign it.