California Conservatorship for Down Syndrome, Intellectual Disability, and Non-Verbal Adults

The Diagnosis Does Not Determine the Outcome

California law is explicit on this point: a diagnosis of Down syndrome, intellectual disability, autism, or any other developmental condition does not by itself justify a conservatorship. Under Probate Code § 1800.3, the court cannot grant a conservatorship unless it finds that the arrangement is the least restrictive alternative necessary to protect the individual — and that finding requires evaluating the person's actual functioning, not their diagnostic label.

This principle reshapes the conversation. The question is not "my child has Down syndrome — do they need a conservatorship?" It is "what specific decisions can my child make with support, and where does that support fall short?"

Limited Conservatorship Is the Tailored Option for Developmental Disabilities

If court authority is warranted for an adult with a developmental disability, the tailored mechanism is generally a limited conservatorship. A general conservatorship uses a different statutory framework.

A limited conservatorship under Probate Code § 2351.5 is tailored specifically for adults with developmental disabilities — a category defined by the Lanterman Act that includes intellectual disability, cerebral palsy, epilepsy, autism, and conditions closely related to intellectual disability. The proposed conservatee must be a Regional Center client or consent to the required Regional Center assessment.

Under a limited conservatorship, the conservatee retains all civil and legal rights except those the judge explicitly transfers to the conservator through the seven powers. The statutory purpose is to promote the limited conservatee's maximum self-reliance and independence.

Evaluating Capacity Across the Seven Powers

Courts do not treat capacity as an on/off switch. A person with Down syndrome might have excellent capacity to choose their residence and maintain social relationships, but need support with financial contracting and medical decisions. A non-verbal individual might communicate preferences through assistive technology, picture boards, or behavioral indicators — and those preferences carry legal weight.

The Regional Center assessment evaluates each of the seven powers separately:

1. Where the person lives
2. Access to confidential records
3. Marriage and domestic partnership
4. Contracting authority
5. Medical treatment decisions
6. Social and sexual relationships
7. Education decisions

Courts commonly grant the powers over records access, contracting, and medical consent — the areas where institutional gatekeeping creates the most friction. They are far more reluctant to grant authority over residence, marriage, and social relationships, and require strong evidence of specific risk before doing so.

Non-Verbal Adults and Decision-Making Capacity

Being non-verbal does not mean being unable to make decisions. California courts and the AB 1663 framework recognize that decision-making capacity must be evaluated with the inclusion of current supports. If a person uses sign language, an augmentative communication device, picture exchange systems, or behavioral indicators to express preferences, those forms of communication count.

That said, courts face genuine challenges when assessing the capacity of a non-verbal individual. The court-appointed PVP attorney has a legal duty to represent the proposed conservatee's expressed wishes — but determining those wishes requires communication access. If the attorney cannot meaningfully communicate with their client, they must rely on behavioral observations, collateral interviews, and the Regional Center's assessment.

For families of non-verbal adults, assembling strong documentation of how your child communicates preferences — what they choose, what they refuse, how they indicate comfort or distress — is critical. This evidence shapes both the Regional Center assessment and the court's analysis.

When Alternatives Work

Many adults with Down syndrome and intellectual disabilities live fulfilling lives under Supported Decision-Making Agreements, with healthcare directives, financial powers of attorney, and Representative Payee arrangements covering their practical needs. The research literature and advocacy community increasingly show that people previously assumed to need conservatorships can thrive under less restrictive frameworks.

The key variables are not the diagnosis, but the person's support network, living situation, vulnerability to exploitation, and the availability of willing and trustworthy supporters.

The California Adult Guardianship & Alternatives Guide walks families through a capability assessment organized around each of the seven powers, with specific adaptations for non-verbal individuals and people with significant support needs.

The "Safety Net" Approach

Some families file for limited conservatorship with the explicit intention of requesting only two or three powers — the minimum needed to handle institutional gatekeeping (typically records access and medical consent) — while preserving the maximum autonomy their adult child can exercise. This approach treats conservatorship as a narrow safety net rather than a comprehensive framework. Courts may consider this model, and the Regional Center report must make recommendations on each requested power; those recommendations are not binding.

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