
Marchman Act Petitions | South Florida & Statewide
Understanding the Marchman Act Petition Process for Involuntary Commitment for Addiction
Robinson Casey focuses on Marchman Act petitions and guardianship matters. Learn how the process works, what families can expect, and how to take the next step with Richard J. Casey III, Esq.
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By Richard J. Casey III, Esq. · Published October 20, 2026
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How to Have Someone Involuntarily Committed in Florida
If you want to know how to have someone involuntarily committed in Florida, start with the right law. Florida uses the Baker Act for mental illness and the Marchman Act for substance use. Each law has its own steps, filing rules, and standards.
This guide explains both paths. It covers who can start each one, what the court looks at, and where guardianship fits.

Two Florida Laws Behind Involuntary Commitment
The Baker Act covers involuntary examination for mental illness. The Marchman Act covers involuntary assessment and treatment for substance use. Both laws sit in the Florida Statutes, the Baker Act in Chapter 394 and the Marchman Act in Chapter 397.
The Marchman Act is Florida’s law for involuntary assessment and treatment of substance use. The criteria for involuntary treatment under the Marchman Act are set out in Florida Statute § 397.675.
The Marchman Act handles substance use. Its criteria appear in Florida Statutes § 397.675, which covers involuntary admission for substance abuse impairment.
The two laws don’t always line up neatly. The Baker Act’s definition of mental illness leaves out intoxication and substance abuse, as set out in Florida Statutes § 394.455. A person with both a mental health disorder and a substance use problem may fall under the Marchman Act’s co-occurring language. That overlap is why the facts matter more than the label.
What Counts as a Mental Health Crisis Under the Baker Act
A Baker Act crisis starts with reason to believe a person has a mental illness. The person must also refuse voluntary examination or be unable to decide whether one is needed. It also asks whether the harm can be avoided through the help of willing, able, and responsible family members or friends or the provision of other services (§ 394.463).
Mental illness has a specific legal meaning. The law describes it as an impairment of mental or emotional processes that substantially interferes with the ordinary demands of living (§ 394.455).
A family member might notice threats of self-harm, refusal to eat or sleep for long stretches, or actions driven by beliefs that aren’t based on reality. These are the facts that matter. A label like “unstable” tells a responder very little.
Write down what you saw, when you saw it, and who else was there. Responders, clinicians, and courts work from observed behavior. Dated, specific details give them something concrete to review.
How a Baker Act Involuntary Examination Begins
If someone is in immediate danger, call 911 first.
The Florida Courts Baker Act guide explains the ways an involuntary examination can start, including an order based on a sworn statement (Florida Courts Baker Act guide). Keep copies of any papers you receive or sign.
Under Florida Statutes § 394.463, a physician, physician assistant, clinical psychologist, psychiatric nurse, advanced practice registered nurse, mental health counselor, marriage and family therapist, or clinical social worker may execute a certificate stating they examined the person within the preceding 48 hours and that the person appears to meet the criteria for involuntary examination. A designated receiving facility provides, at a minimum, emergency screening, evaluation, and short-term stabilization (§ 394.455). It is not a place for long-term care.
The examination leads to a decision. The person may be released, released for voluntary outpatient treatment, or held for further proceedings.
How a Marchman Act Petition Works for Substance Use
The Marchman Act lets certain people ask a court to order assessment and treatment for a person with substance abuse impairment. A written petition starts the case. Here’s how to have someone involuntarily committed in Florida under this law.
For an adult, the petition may be filed by a spouse or legal guardian, any relative, a service provider, or an adult with direct personal knowledge of the impairment and prior treatment (§ 397.68112).
The petition must name the respondent and the petitioner. It must state their relationship and lay out facts showing why the respondent is substance abuse impaired, has lost self-control, and either has inflicted or is likely to inflict physical harm on himself, herself, or others unless the court orders the involuntary services, or refuses care because impaired judgment prevents appreciating the need for it (§ 397.68141). A professional report from an exam within 30 days before filing may be attached.
The petition goes to the clerk of the court in the county where the person is located. The clerk may not charge a filing fee for the petition (§ 397.681). If a petition lands in the wrong county, the case is not automatically lost. In J.P. v. J.N., the court held that filing in the wrong county did not take away the circuit court’s jurisdiction. However, the filing of the petition in the wrong county did not divest the circuit court in Putnam County of jurisdiction. J.P. v. J.N., 225 So. 3d 410 (Fla. 5th DCA 2017)
The respondent has the right to counsel at every stage of the court case, which the respondent may waive if present and the court finds the waiver is made knowingly, intelligently, and voluntarily (§ 397.681). The Second District has also held that due process supports that right in Marchman Act proceedings (Hillsborough County v. Albrechta).
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What the Court Needs to Decide Involuntary Commitment
The court may order involuntary treatment only when the conditions are proved by clear and convincing evidence. A court order for treatment from a publicly funded licensed service provider can last up to 90 days, and renewal may be requested before that period ends (§ 397.697).
The court hears all relevant evidence. That can include testimony from family members who know the person’s history and how it relates to the current condition. The clinical assessment is part of the record (§ 397.6957). A respondent generally cannot be ordered into treatment without a clinical assessment, unless they are present in court and expressly waive it.
The petitioner carries the burden of proof. In J.C. v. State, the Fifth District reversed an order where the trial court questioned the only witness while the petitioner was absent. That rule comes from the Fifth District. The Fourth District reached a different result in J.J.J. v. D.G., so the point is not settled across the state. The court stated: “we certify conflict with R.S., J.W., and C.W.R.K., for the reasons stated above. Affirmed; conflict certified.” J.J.J. v. D.G., No. 4D2023-2185 (Fla. 4th DCA July 24, 2024)
The judge makes the findings. Each case turns on its own facts and record.
Preparing Your Information Before Anyone Acts
Learning how to have someone involuntarily committed in Florida is easier with clear notes. Start a dated timeline now, before a crisis forces you to reconstruct events from memory.
- Write each incident with the date, time, place, and what happened.
- List any substances or medications involved, if you know them.
- Note prior treatment, assessments, or hospital stays.
- Record who else saw the behavior, with names and phone numbers.
- Describe the current living situation and who can help.
Keep these notes private and organized. Add new entries as they happen, and never change old ones.
These details matter because a petition must set out specific factual allegations (§ 397.68141). Testimony from people familiar with the history also carries weight (§ 397.6957).
Gathering information never replaces emergency care. If someone faces immediate danger, contact emergency services first, then organize your notes.
When Guardianship Is the Better or Additional Route
Guardianship is a separate court process. It applies to an adult who cannot make some or all decisions alone. It is different from an involuntary examination or an involuntary treatment order, which respond to a crisis.
Robinson Casey handles several guardianship forms:
- Emergency temporary guardianship for urgent situations
- Plenary guardianship for broad decision-making authority
- Limited guardianship for decisions in specific areas
- Mental health guardianship tied to mental health needs
Whether involuntary commitment, guardianship, or both fit your situation turns on the facts. Some families pursue them in sequence. A lawyer can review the facts and explain which route fits.
What Happens After an Involuntary Commitment Begins
After an examination or court order, the person may be released, admitted voluntarily, or kept in treatment as the law allows. For an individual involuntarily admitted to a licensed service provider, release without further court order may come only from a qualified professional in a hospital, a detoxification facility, an addictions receiving facility, or any less restrictive treatment component; for a minor, the release must also be to a parent, legal guardian, or legal custodian or their authorized designee, the Department of Children and Families, or the Department of Juvenile Justice (§ 397.6758).
When a court ordered the treatment, the petitioner and the court must receive notice of release (§ 397.6758). The court keeps jurisdiction to monitor compliance and change the treatment approach (§ 397.697).
Under Baker Act rules, a patient generally may communicate freely with people outside the facility. Under Florida Statutes § 394.459, each facility must establish reasonable rules on visitors, visiting hours, and telephone use in the least restrictive possible manner. Patients may contact their attorneys at any reasonable time.
What does the Baker Act mean?
The Baker Act is Florida’s Mental Health Act. It allows involuntary examination of a person who has a mental illness and meets the statute’s criteria.
Who can file a Marchman Act petition?
For an adult respondent, a spouse, legal guardian, any relative, a service provider, or an adult who has direct personal knowledge of the respondent’s substance abuse impairment and prior course of assessment and treatment can file. The petition goes to the clerk in the county where the person is located.
Does the person have a right to a lawyer?
Yes. A respondent has the right to counsel at every stage of a Marchman Act court case, although the respondent may waive that right if present and the court finds the waiver is knowing, intelligent, and voluntary.

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Talk Through Your Situation with Robinson Casey
If you’re trying to protect someone you love, you’re probably under real pressure. You may be weighing legal steps you never expected to face, and you may not know yet which law applies.
Robinson Casey focuses on Marchman Act petitions and guardianship matters. The firm serves families in Miami-Dade, across South Florida, and statewide. Richard J. Casey III, Esq. is the responsible lawyer. Baker Act matters may be handled differently. If another lawyer or firm fits your matter better, we will tell you so.
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