A California blended-family cautionary tale about incapacity, control, and the decisions a spouse may no longer be able to make.

The call usually begins with a sentence that sounds simple:

“We need to get our trust done.”

Then comes the fact that changes everything: one spouse has recently suffered serious cognitive decline or received a diagnosis affecting memory and judgment. The other spouse is frightened. There is a home, savings, perhaps retirement accounts, and a child from an earlier relationship who has been estranged for decades. The couple always meant to put an estate plan in place. They knew what they wanted. They simply never signed anything.

Now the well spouse wants to act quickly. Create the trust. Protect the home. Make sure the estranged child does not inherit. Put the right people in charge.

But an estate-planning attorney cannot manufacture legal capacity, borrow one spouse's capacity for the other, or treat marriage as permission to sign another adult's estate plan. If the affected spouse can no longer understand and communicate the decisions involved, the planning window may already have closed—at least for that spouse and that spouse's property rights.

This is how a family can get caught unprepared: not because no solution ever existed, but because the decisions were postponed until the person who needed to make them might no longer be legally able to do so.

A Diagnosis Is Not Automatically Incapacity

California law begins in the right place: adults are presumed capable. Under Probate Code section 810, a person is not deemed incapable merely because of age, illness, dementia, or another mental or physical disorder. Capacity is not an all-or-nothing label.

The inquiry is functional and specific to the act. Probate Code section 811 requires evidence of a deficit in a mental function—and a connection between that deficit and the decision at issue. Probate Code section 812 asks whether the person can communicate a decision and understand its rights, duties, probable consequences, significant risks, benefits, and reasonable alternatives.

A person may therefore have capacity to make one relatively simple decision but lack capacity for a complicated transaction involving a trust, real estate, tax consequences, competing beneficiaries, and property-characterization questions.

A will has its own standard. Under Probate Code section 6100.5, a person must be able to understand the nature of making a will, recollect the nature and situation of the person's property, and remember and understand the person's relationships with those whose interests are affected. Certain delusions may also defeat testamentary capacity when they cause the disposition.

California decisions reinforce that capacity depends on the act's content and complexity. In Andersen v. Hunt (2011) 196 Cal.App.4th 722, the court explained that a will-like trust amendment may be evaluated using the testamentary-capacity standard. In Lintz v. Lintz (2014) 222 Cal.App.4th 1346, a substantially more complex trust plan required analysis under the decision-making framework of sections 810 through 812.

The practical point is not that a diagnosis ends planning. It is that a late diagnosis can make planning slower, narrower, more heavily documented, and more vulnerable to a later contest. The attorney must assess the individual client, the exact decisions, and the complexity of the proposed plan. When the person cannot meet the applicable standard, the attorney must stop.

Marriage Does Not Give One Spouse Two Signatures

The well spouse may say, “But we are married. These are our assets.” That does not solve the capacity problem.

California marriage creates important property rights, but it does not authorize one spouse to execute the other spouse's will or trust. Each spouse has a separate legal voice. A competent spouse may generally plan with that spouse's own separate property and property interests, subject to California's community-property management rules and any existing agreements. The competent spouse cannot simply disinherit the other spouse's child from the other spouse's estate, redirect the other spouse's beneficiary designations, or sign the other spouse's estate-planning documents.

Even an existing power of attorney may not be enough. Probate Code section 4264 provides that powers such as creating, modifying, revoking, or terminating a trust; making gifts; changing survivorship interests; and changing beneficiary designations require express authorization. Section 4265 goes further: a power of attorney may not authorize an agent to make, amend, or revoke the principal's will.

That distinction is devastating when there is no plan. The well spouse may be able to address that spouse's own share, but the impaired spouse's interests can remain frozen. The family home may be jointly held. Bank and investment accounts may have different ownership forms. Retirement accounts and life insurance may pass under old beneficiary designations. Separate property may follow intestacy. What felt like “our estate” becomes a collection of assets governed by different titles, contracts, statutes, and signatures.

In other words, half the planning may remain suspended—not necessarily a mathematical half of every asset, but the portion that the competent spouse has no legal authority to redirect.

Why Blended Families Face a More Dangerous Default

The problem becomes more acute in a second marriage or blended family.

Suppose one spouse has an adult child from a prior relationship. That child has been estranged for many years. The married couple may sincerely agree that the child should receive nothing. But an intention is not an estate plan, and estrangement is not an automatic disinheritance.

If the child's biological parent dies without an effective disposition, California's intestacy statutes—not the couple's unrecorded wishes—determine the result. Under Probate Code section 6401, the surviving spouse receives the decedent's half of community property, but the division of the decedent's separate property depends on which relatives survive. When the decedent leaves one child, the surviving spouse generally receives one-half of the intestate separate property. Under Probate Code section 6402, the remaining portion generally passes to the decedent's descendants.

Thus, an estranged biological child may inherit from the incapacitated or deceased parent even if the marriage has lasted decades and even if the spouses verbally agreed otherwise. Conversely, a stepchild ordinarily does not inherit from a stepparent merely because the child's parent married the stepparent, although California has narrow statutory exceptions.

This asymmetry surprises families. The surviving spouse may feel that the child abandoned the family years ago. The child may believe the parent was isolated or influenced. The home and investment accounts may contain both community and separate-property components. What began as delayed planning can become a dispute over title, tracing, capacity, undue influence, and inheritance.

The family is no longer designing an outcome. It is litigating a default.

“We Will Just Get a Conservatorship” Is Not an Estate Plan

When private planning is no longer possible, a conservatorship may be necessary to manage an incapacitated person's affairs. But a conservatorship is not a convenient substitute for timely planning.

California's substituted-judgment procedure allows a conservator or another interested person to ask a court to authorize certain transactions. Probate Code section 2580 identifies possible actions, including creating or revoking a revocable trust, making a will, changing property interests, making gifts, and taking steps that may benefit the conservatee or the estate.

The word that matters is “ask.” The conservator does not automatically receive a blank check to recreate the plan the family says the conservatee once wanted.

Under Probate Code section 2582, the court must make required findings before authorizing the proposed action. Section 2583 directs the court to consider all relevant circumstances, including the conservatee's wishes, known estate plan, tax consequences, changes in the estate, the likelihood of recovery of capacity, and the interests of family members, friends, and other potential beneficiaries.

That means notice, evidence, possible objections, legal fees, delay, and judicial discretion. An estranged child who might lose an inheritance can appear and object. The court must protect the conservatee, not merely approve the well spouse's preferred result. A request whose principal effect is to disinherit the conservatee's child may receive intense scrutiny—especially if there is no reliable written evidence that this was the conservatee's own settled intention while capable.

Conservatorship may be essential. It may permit useful protective steps. But it is a courtroom remedy for a problem that could often have been addressed privately, precisely, and less expensively while both spouses had capacity.

The Last-Minute Plan Is Also the Most Contestable Plan

Assume the affected spouse has moments of clarity. Could documents be signed during a lucid interval? Possibly. The existence of a diagnosis does not itself answer the legal question.

But responsible planning in that setting requires care. The attorney may need to meet privately with the client, use clear and neutral questions, reduce the proposed plan's complexity, obtain relevant medical input with permission, create a detailed contemporaneous record, and ensure that the instructions come from the client—not from the spouse or child who drove the client to the meeting.

Late changes that favor one side of a blended family invite predictable allegations:

• The signer did not understand the plan.

• The well spouse supplied the answers.

• The estranged child was excluded because of a delusion or misinformation.

• The documents were too complex for the signer's functional abilities.

• Property was wrongly characterized as community or separate.

• A beneficiary or fiduciary exerted undue influence.

Even a valid document can become expensive to defend. The cost is not merely financial. Medical records become exhibits. Family history becomes testimony. Private grievances become public allegations. The surviving spouse may spend years defending a plan that could have been created routinely before the crisis.

What Timely Planning Would Have Changed

Before incapacity, each spouse could have spoken independently with counsel and made deliberate decisions. A properly designed plan might have included:

• A revocable living trust identifying who manages trust assets during incapacity and who receives them at death.

• Pour-over wills addressing probate assets and nominating the preferred personal representative.

• Durable powers of attorney containing carefully selected express powers for trust, gifting, real-property, and beneficiary matters where appropriate.

• Advance health care directives and HIPAA authorizations.

• A documented plan for community property, separate property, the family home, retirement accounts, life insurance, and transfer-on-death assets.

• Clear provisions for children from prior relationships—including an intentional omission when legally and ethically appropriate.

• Successor trustees chosen for competence and neutrality, rather than convenience alone.

• Funding and titling work so that the documents actually control the intended assets.

The objective is not merely to “have a trust.” It is to align legal authority, asset ownership, beneficiary designations, incapacity planning, and family realities while the people whose rights are affected can still decide for themselves.

The Warning for Orange County Families

Orange County families often have substantial wealth concentrated in a residence purchased many years ago. Add a second marriage, children from prior relationships, retirement accounts, a family business, or a spouse beginning to experience memory loss, and a generic online form is not a plan.

Do not wait for a physician to deliver the sentence that forces the family to ask whether it is already too late.

If a spouse has begun repeating questions, losing track of accounts, showing unusual suspicion, forgetting close relatives, or deferring every answer to another family member, seek legal advice promptly. Those facts do not prove incapacity. They do signal that the family should not postpone an individualized capacity and estate-planning review.

The most important planning decisions are often not about death. They are about who may act during life, which assets that person may control, and what happens when only one spouse can still give legally effective instructions.

An estate plan signed at the right time preserves choice. A plan attempted after capacity is lost may become a petition, an objection, a hearing, and a result selected under default rules.

The planning window rarely closes with a loud sound. More often, it closes quietly—one postponed meeting at a time.

FAQ 

Does a dementia diagnosis automatically prevent estate planning in California?

No. California presumes adults have capacity, and a diagnosis alone does not establish incapacity. The person's functional ability to understand and communicate the specific decision controls. Different documents and transactions may require different levels of capacity.

Can a competent spouse create a trust for an incapacitated spouse?

Not simply by virtue of being married. The competent spouse may generally plan for that spouse's own property interests, but cannot sign the other spouse's will or unilaterally redirect the other spouse's assets. A valid power of attorney must expressly grant certain trust, gift, survivorship, and beneficiary powers, and it still cannot authorize the agent to make or change the principal's will.

Can a California court create an estate plan for a conservatee?

A court may authorize specified actions through a substituted-judgment petition under Probate Code section 2580, but approval is not automatic. The court considers the conservatee's wishes, existing plan, family interests, tax consequences, and other circumstances. Interested persons may receive notice and object.

Can an estranged child inherit if there is no estate plan?

Yes. Estrangement alone does not disinherit a biological child. If the parent dies without an effective plan, California intestacy law may give the child some or all of the portion not passing to a surviving spouse, depending on the property and surviving relatives.

Why is incapacity planning especially important in a blended family?

Spouses and children from prior relationships may have competing rights and expectations. Without coordinated trusts, powers of attorney, property characterization, asset titling, and beneficiary designations, the competent spouse may lack authority to carry out the couple's informal intentions.

Disclaimer

This article is provided for general educational and informational purposes only and does not constitute legal, tax, medical, or financial advice. It does not create an attorney-client relationship. Capacity is act-specific and fact-intensive, and a medical diagnosis alone does not establish legal incapacity. Laws change, and the application of California law depends on the particular facts, asset titles, beneficiary designations, marital-property rights, and documents involved. Consult qualified California counsel regarding your individual circumstances. Past results and examples do not guarantee any future outcome.

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