Understanding the Lanterman-Petris-Short Act

The Lanterman-Petris-Short (LPS) Act is a California law that regulates when and how someone can be involuntarily treated in a psychiatric setting because of a mental health condition. It was passed to end indefinite institutionalization and to protect the civil rights of people living with mental illness.

At the same time, the LPS Act created a pathway to intervene when a person is at immediate risk of harm to self, others, or is “gravely disabled,” meaning they cannot meet basic needs like food, clothing, or shelter due to a mental health disorder. This balance between safety and personal liberty still guides how mental health care works today in Novato and across Marin County.

For individuals and families in Novato, California, understanding the LPS Act can make crisis situations feel less confusing and help you advocate for yourself or a loved one.

The LPS Act defines specific types of involuntary holds and conservatorships. These processes affect what happens during a crisis, who can make decisions, and how long a person can be kept in a hospital or locked setting.

A “5150 hold” refers to a section of the California Welfare and Institutions Code that allows certain professionals to place a person in a 72-hour involuntary psychiatric hold for evaluation and crisis stabilization.

Under a 5150 hold, a person may be detained if, because of a mental health disorder, they are assessed as:

This hold allows mental health professionals to complete an assessment, begin treatment, and determine whether someone can safely step down to voluntary care or needs continued involuntary treatment.

A 5150 hold is a civil mental health intervention, not a criminal arrest. For Novato residents, this means that a crisis response focused on safety and treatment does not automatically become a criminal issue.

If, after the initial 72 hours, providers believe the person still meets criteria for involuntary treatment, they may initiate a 14‑day intensive treatment hold, commonly called a 5250. During this time, the individual has rights to notice, hearings, and advocacy to challenge the hold.

Organizations like Disability Rights California outline these protections, emphasizing that people on LPS holds retain important rights around treatment decisions, privacy, and due process.

For some individuals with long-term, severe mental health disorders who remain gravely disabled, the county may seek an LPS conservatorship. Under an LPS conservatorship, a county public guardian can be appointed to make decisions about treatment and placement when a person is unable to do so safely.

Only the county’s Public Guardian can initiate an LPS conservatorship, and this usually comes after the person has already gone through the 5150/5250 pathway. In Marin County, these decisions involve coordination between behavioral health services, the courts, and medical providers.

California has revisited the LPS Act to respond to changes in behavioral health needs, homelessness, and substance use. Senate Bill (SB) 43, passed in 2023, is one of the most significant updates in decades.

SB 43 broadens how “grave disability” is defined and modernizes when someone can be considered unable to care for themselves due to serious mental illness or severe substance use disorders. According to the Los Angeles County Department of Mental Health, the goal is to make it easier to connect people with necessary treatment and conservatorship when they are clearly unable to stay safe on their own.

For people living in Novato and Marin County, these statewide changes influence how crisis teams and hospitals assess risk and when the county considers conservatorship for chronically unstable situations.

The LPS Act is a statewide framework, but its impact is felt locally through Marin County Behavioral Health and Recovery Services, local clinics, and nearby hospitals that serve Novato residents.

If you or someone you care about in Novato is in immediate danger due to a mental health crisis, you can:

Resources like Marin Community Clinics and MarinHealth Psychiatry coordinate with county services when someone meets criteria for an LPS hold or needs step‑down care after a hospitalization. The Marin County District Attorney’s office also provides a public listing of mental health and crisis resources for residents.

For families, schools, and employers in Novato, this network means that when someone is placed on a 5150 hold, there are clear pathways to follow‑up care, outpatient therapy, and community-based support.

The LPS Act emphasizes patient rights, including access to information, the ability to contest holds, and the right to humane treatment. Advocacy organizations in California provide guidance on how to navigate hearings, request patient rights advocates, and understand documentation during an involuntary stay.

In Novato, community agencies such as North Marin Community Services support youth and families with mental health screenings, counseling, and education, which can reduce the likelihood of reaching the point of an involuntary hold. These services help people seek help earlier and more voluntarily.

When you or someone you care about is struggling with emotional, psychological, or behavioral challenges, it can be overwhelming to navigate both the clinical and legal sides of care. The LPS Act adds important protections, but it can also feel complex in the middle of a crisis.

At Hope Therapy Center in Novato, California, our licensed mental health professionals provide evidence‑based, compassionate therapy for children, teens, adults, and families. We understand how California’s mental health laws, including the LPS Act, intersect with everyday concerns like anxiety, depression, school or work stress, relationship strain, and life transitions.

If you have questions about how the Lanterman-Petris-Short Act might affect your care, or you want to focus on getting help early—well before a crisis reaches the level of a 5150—we are here to support you in a respectful, collaborative, and trauma‑informed way.

To learn more or schedule an appointment, you can reach out directly through our contact page at Hope Therapy Center.