What Is the Lanterman Developmental Disabilities Services Act?

The Lanterman Developmental Disabilities Services Act is a 1969 California law that gives people with developmental disabilities a legal right to the services and supports they need to live in their own communities instead of in institutions.¹ It set up California’s statewide network of Regional Centers to coordinate those services, and it made nearly all of them free regardless of age or income.²

If you or a family member may qualify, the Act is the document behind every service decision a Regional Center makes. It tells the agency what it must offer, how quickly it must act, and what you can do if you disagree.

What the Law Guarantees

Welfare and Institutions Code Section 4502 functions as a bill of rights for people with developmental disabilities. The baseline is equal treatment: no one can be shut out of a publicly funded program or activity because of a developmental disability.³

On top of that, the statute protects specific rights that shape day-to-day service delivery. Services must be provided in the least restrictive setting that still meets the person’s needs, with community placements preferred over institutional ones. Every person is entitled to dignity, privacy, and freedom from harm, including unnecessary restraint, isolation, excessive medication, abuse, and neglect. People have the right to make their own choices about where and with whom they live, how they spend their day, their relationships, and their education and work. The law also guarantees social and recreational opportunities, religious freedom, publicly supported education regardless of the degree of disability, and prompt medical care.

Regional Centers must explain these rights to each person in a way they can understand, both at intake and at every planning meeting that follows.³

Who Qualifies

Eligibility turns on the definition in Welfare and Institutions Code Section 4512. A “developmental disability” has to meet three tests: it started before age 18, it’s expected to continue indefinitely, and it causes a substantial disability.⁴

Four conditions are named in the statute: intellectual disability, cerebral palsy, epilepsy, and autism. A fifth category covers conditions closely related to intellectual disability or requiring similar treatment. Purely physical conditions don’t qualify.⁴

For anyone five or older, “substantial disability” means significant functional limitations in at least three of seven major life areas: self-care, receptive and expressive language, learning, mobility, self-direction, capacity for independent living, and economic self-sufficiency.⁵

Children under five face a lower bar. A child qualifies provisionally with significant limitations in just two major life activities, and the disability doesn’t have to fit one of the four named diagnoses, so long as it isn’t solely physical. That matters because many young children only receive a firm diagnosis after years of observation.⁵

You have to be a California resident to receive Regional Center services. Immigration status is not a factor.

Infants and Toddlers: Early Start

Children from birth through 36 months are served under a separate program called Early Start, not the general eligibility rules above. A child may qualify with a developmental delay of at least 25 percent in one or more areas (cognitive, language, social-emotional, adaptive, or physical), an established condition with a high probability of causing delay, or a combination of biomedical risk factors. Anyone can make a referral, including parents, doctors, and child care providers, and the Regional Center or local education agency has 45 days to assign a service coordinator, complete an evaluation, and develop an Individualized Family Service Plan if the child is eligible.⁶

How You Get Services

The path from first phone call to funded services runs through two statutory deadlines and one planning document.

After you request assistance, the Regional Center has 15 working days to complete initial intake. In that window, staff provide information about available services and either decide eligibility or move you into a full assessment. If the agency denies eligibility or declines to assess further, it must send written notice explaining why and informing you of your appeal rights.⁷

If assessment is needed, the standard deadline to complete it is 120 days from initial intake. That shortens to 60 days when delay would create unnecessary risk to health or safety, significant further delay in development, or imminent risk of placement in a more restrictive setting. Assessment can draw on existing diagnostic records (intelligence testing, adaptive functioning testing, neurological and psychiatric evaluations, medical records) or require new evaluations. All communication during intake and assessment must be in the family’s native language.⁸

The Individual Program Plan

Once someone is found eligible, the Regional Center develops an Individual Program Plan (IPP) with them. The IPP identifies the person’s life goals and spells out which services and supports the Regional Center will fund to help reach those goals.⁹

Services vary with the person’s situation. Common ones include respite care for family caregivers, behavioral therapy, supported living, vocational training and supported employment, transportation, day programs, and adaptive equipment. The planning team includes the person receiving services, their legal representative if any, Regional Center staff, and anyone else the person wants in the room. Every service in the plan has to connect to a specific goal that promotes the person’s well-being and community inclusion.

The IPP must be reviewed by the planning team at least once every three years, and the Regional Center has to hold an in-person meeting or visit at least every 12 months. You can also request a review any time. The agency then has 30 days to hold the meeting, or 7 days if the issue involves health and safety or keeping the person in their home.¹⁰

Choosing Who Delivers Your Services

Under the traditional model, the Regional Center selects and contracts with the providers who deliver your services. California’s Self-Determination Program offers an alternative. Instead of the agency choosing providers for you, you receive a personal budget and buy the services and supports in your IPP yourself.¹¹

The program is open to all eligible Regional Center consumers. Participants work with an independent facilitator to build a spending plan, then use a Financial Management Service to handle payroll, taxes, and billing for the workers and vendors they hire. The tradeoff is real: more freedom and flexibility, more active management on your end. For families frustrated by limited provider choices or rigid scheduling, the control is often worth the extra work.

If You Disagree With a Decision

The Act gives you two different appeal routes depending on what the dispute is about.

Fair Hearings for Eligibility and Service Disputes

If your application is denied, or you disagree with the type or amount of services in your IPP, you can request a fair hearing through the Department of Developmental Services. Appeals are available to anyone age 3 or older who has applied for or is receiving Regional Center services.¹² The written notice of the decision you’re challenging must tell you how to file. Once requested, a fair hearing has to be completed and a final decision issued within 90 days.¹³

The request form lets you choose an informal meeting, mediation, a formal fair hearing, or any combination. Mediation can resolve things faster and with less friction, but a formal hearing produces a binding administrative decision if mediation doesn’t work.

Complaints About Rights Violations

A separate process exists when you believe a right guaranteed by the Act has been violated, withheld punitively, or unreasonably denied. You start by filing a written complaint with the director of the Regional Center, who has 20 working days to investigate and send a written proposed resolution. If that doesn’t satisfy you, you have 15 working days to escalate in writing to the Director of Developmental Services, who then has 45 days to issue a written administrative decision. If you don’t escalate, the Regional Center’s proposed resolution takes effect on the 20th working day after you receive it.¹⁴

This Section 4731 process is for rights violations only. Disputes about what services should be in your IPP or about provider rates go through the fair hearing route instead. Regional Centers have to notify you in writing, in your preferred language, of your right to file a complaint when you first apply and at every regularly scheduled planning meeting.¹⁴

1
Department of Developmental Services. A Consumer’s Guide to The Lanterman Act
2
Department of Developmental Services. Regional Center Eligibility and Services
3
California Legislative Information. California Welfare and Institutions Code 4502
4
California Legislative Information. California Welfare and Institutions Code 4512
5
California Legislative Information. California Welfare and Institutions Code 4512
6
Department of Developmental Services. What is Early Start?
7
California Legislative Information. California Welfare and Institutions Code 4642
8
California Legislative Information. California Welfare and Institutions Code 4643
9
California Legislative Information. California Welfare and Institutions Code 4646
10
California Legislative Information. California Welfare and Institutions Code 4646.5
11
Department of Developmental Services. Self-Determination Program
12
Department of Developmental Services. Lanterman Act Eligibility and Service Appeals
13
California Legislative Information. California Welfare and Institutions Code 4701
14
California Legislative Information. California Welfare and Institutions Code 4731