{"id":15124,"date":"2026-10-29T04:28:01","date_gmt":"2026-10-29T04:28:01","guid":{"rendered":"https:\/\/robinsoncasey.com\/guides\/marchman-act-attorney\/marchman-act-attorney-sibling-florida\/"},"modified":"2026-10-29T05:02:52","modified_gmt":"2026-10-29T05:02:52","slug":"marchman-act-attorney-sibling-florida","status":"publish","type":"page","link":"https:\/\/robinsoncasey.com\/guides\/marchman-act-attorney\/marchman-act-attorney-sibling-florida\/","title":{"rendered":"Marchman Act Attorney for Siblings in Florida"},"content":{"rendered":"\n
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Marchman Act Petitions | South Florida and Statewide<\/p>

When a Brother or Sister Needs Help, Florida Law Can Help Your Family Act<\/h1>

Robinson Casey focuses on Marchman Act petitions and guardianship matters for families across South Florida and statewide. Speak with a Marchman Act attorney about your sibling's situation.<\/p>

Schedule Your Free Consultation<\/a><\/div>
Schedule Your Free Consultation<\/a><\/div><\/div>\n<\/div><\/div>\n\n\n

By Richard J. Casey III, Esq. \u00b7 Published October 29, 2026<\/p>\n\n

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Your Brother or Sister Is in Crisis: What a Marchman Act Petition Is<\/h2>\n

A Marchman Act petition asks a Florida court to order assessment, stabilization, and treatment for an adult whose substance use has left them unable to keep themselves safe. If you’re looking into a Marchman Act for your brother or sister in Florida, you may have already tried everything you can think of. There may have been emergency visits, refused help, or dangerous choices.<\/p>\n

The law runs through the court and focuses on substance use impairment. It is not a general mental health process. Most families reach this point after a long stretch of trying to help on their own. This page explains each stage so you can bring sharper questions to a consultation.<\/p>\n\n

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If your brother or sister is in danger right now, you don't have to work out the court process alone. Our team can review your facts with you. Talk it through with our team — the first consultation is free, confidential, and carries no obligation.<\/p>

Get a free consultation<\/a><\/div>
Get a free consultation<\/a><\/div><\/div>\n<\/div>\n\n
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Can a Sibling File a Marchman Act Petition in Florida?<\/h2>\n

Yes, a sibling can file. A sibling is a relative, and the statute lets “any relative” petition for an adult respondent. The law also lists a spouse or legal guardian, a service provider, and an adult with direct personal knowledge of the person’s impairment and treatment history (\u00a7 397.68112<\/a>).<\/p>\n

It must also state the facts behind it (\u00a7 397.68141<\/a>). Those facts should explain why you believe the person is impaired. They should show how the impairment has cost them self-control over substance use. At the hearing, the petitioner must prove by clear and convincing evidence that the person is substance abuse impaired and has a history of not complying with treatment. The petitioner must also prove that, because of the impairment, the person is unlikely to voluntarily participate in recommended services or cannot determine whether services are necessary. Finally, the petitioner must prove either that without services the person is likely to suffer neglect or refuse self-care, posing a real and present threat of substantial harm, with a substantial likelihood of serious bodily harm to self or others in the near future as shown by recent behavior; or that the person’s refusal of care rests on judgment so impaired by substance abuse that the person cannot appreciate the need for care or make a rational decision about it.<\/p>\n

General worry is not enough. Dates, incidents, prior treatment attempts, and refusals give the court something concrete. A petition may include an assessment by a qualified professional done within 30 days before filing. If there was no assessment, or the person refused one, the petition must say so.<\/p>\n

Filing location matters. The clerk may not charge a filing fee (\u00a7 397.681<\/a>). In J.P. v. J.N.<\/a>, a Fifth District court held that filing in the wrong county was a venue defect, not a loss of jurisdiction. However, the filing of the petition in the wrong<\/a> county did not divest the circuit court in Putnam County of jurisdiction. Confirm where your brother or sister is physically located before you file.<\/p>\n

Families asking who else can start a petition for a partner can read our guide on spouses and partners<\/a>. Whether your facts support a petition turns on the details, and a consultation is where those details get reviewed.<\/p>\n

Marchman Act, Baker Act, and Guardianship: How They Differ<\/h2>\n

The Marchman Act addresses substance use impairment. The Baker Act is a separate Florida law for involuntary examination related to mental illness, with its own rules. Guardianship addresses who has legal authority to make decisions.<\/p>\n

A guardianship is a court appointment. It gives a guardian authority over decisions about medical care, money, housing, or daily life when a person cannot make safe decisions. Robinson Casey handles plenary, limited, emergency temporary, and mental health guardianship matters.<\/p>\n

A family may need more than one tool. A Marchman petition asks for assessment and treatment. A guardianship asks for authority over specific decisions. Which path fits depends on your loved one’s condition and on which decisions need legal authority.<\/p>\n

What the Court Must Find Under the Marchman Act<\/h2>\n

The court may order treatment only when the conditions are proved by clear and convincing evidence (\u00a7 397.697<\/a>). That is a high bar, and the petitioner has to meet it.<\/p>\n

The person must then also meet one of several further tests. Fla. Stat. \u00a7 397.675<\/a> reads: “(b) Without care or treatment, is likely to suffer from neglect or refuse to care for himself or herself; that such neglect or refusal poses a real and present threat of substantial harm to his or her well-being; and that it is not apparent that such harm may be avoided through the help of willing, able, and responsible family members or friends or the provision of other services, or there is substantial likelihood that the person has inflicted, or threatened to or attempted to inflict, or, unless admitted, is likely to inflict, physical harm on himself, herself, or another.” The statute also says a mere refusal of services is not, by itself, evidence of lack of judgment. Fla. Stat. \u00a7 397.675<\/a> reads: “(b) Without care or treatment, is likely to suffer from neglect or refuse to care for himself or herself; that such neglect or refusal poses a real and present threat of substantial harm to his or her well-being; and that it is not apparent that such harm may be avoided through the help of willing, able, and responsible family members or friends or the provision of other services, or there is substantial likelihood that the person has inflicted, or threatened to or attempted to inflict, or, unless admitted, is likely to inflict, physical harm on himself, herself, or another.”<\/p>\n

The respondent must be present at the hearing on the petition unless the court finds he or she knowingly, intelligently, and voluntarily waives the right to be present, or that presence is inconsistent with his or her best interests or likely to be injurious to self or others (\u00a7 397.6957<\/a>). The court hears family members who know the person’s history. Testimony is under oath.<\/p>\n

In J.C. v. State<\/a>, the Fifth District reversed an order where the trial court questioned the only witness while the petitioner was absent. The appellate court said the judge was functioning as the absent petitioner. The judge decides the case, but the petitioner must present it.<\/p>\n

How the Marchman Act Process Works, Step by Step<\/h2>\n

The process moves from petition to court review, to possible emergency assessment, to a hearing, and then to a treatment order if the court finds the criteria met.<\/p>\n

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  1. Fact review.<\/strong> Gather dates, incidents, medical history, prior treatment, and refusals of care.<\/li>\n
  2. Filing.<\/strong> The petition goes to the clerk in the county where the person is located.<\/li>\n
  3. Emergency review.<\/strong> When emergency circumstances exist, the court may rely on the petition alone and enter an ex parte order for assessment and stabilization (\u00a7 397.6818<\/a>). The provider may hold the person for up to 72 hours of observation, unless a listed exception applies.<\/li>\n
  4. Hearing.<\/strong> The court must schedule a hearing within 10 court working days, unless a continuance is granted (\u00a7 397.68151<\/a>). The respondent has the right to counsel at every stage, although the respondent may waive that right if the respondent is present and the court finds the waiver is made knowingly, intelligently, and voluntarily (\u00a7 397.681<\/a>).<\/li>\n
  5. Treatment order.<\/strong> If the criteria are proved, the court may order involuntary treatment services for up to 90 days (\u00a7 397.697<\/a>). A renewal may be requested before that period ends, for up to an additional 90 days (\u00a7 397.6975<\/a>).<\/li>\n<\/ol>\n

    Timing varies by county, the court’s calendar, and the facts. Plan for a process with several stages, not a fixed date.<\/p>\n

    How Robinson Casey Represents Families on Marchman Act Matters<\/h2>\n

    Robinson Casey focuses exclusively on Marchman Act petitions and guardianship matters, serving families across South Florida and statewide. Richard J. Casey III, Esq. is the responsible lawyer for this page. Our attorneys and our team handle the petitioner’s side of these matters.<\/p>\n

    For a sibling petitioner, that work includes:<\/p>\n