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Introduction
A landlord walks into a tenant’s apartment without notice because “the lease says I can enter anytime.” A patient wakes up after surgery to find the doctor performed a procedure that was never discussed. A driver arrested for DUI refuses a breathalyzer and assumes silence protects them. All three situations hinge on the same legal concept — expressed consent — and all three get it wrong.
Florida law treats expressed consent differently depending on the context. In criminal cases, it must be intelligent, knowing, and voluntary. In real estate transactions, it almost always needs to be in writing. In medical settings, it requires a conversation about risks and alternatives. The consequences of getting it wrong range from a voided contract to a first-degree misdemeanor to a sexual battery charge.
What Counts as Expressed Consent in Florida
Florida statutes define consent most explicitly in criminal contexts. Under § 794.011(1)(a), consent means “intelligent, knowing, and voluntary consent” and specifically excludes coerced submission. The statute goes further — it clarifies that failing to physically resist does not equal consent. This definition applies primarily to sexual offenses, but Florida courts have borrowed its framework for other areas of law.
Expressed consent is not the same as implied consent. Implied consent happens when you act in a way that suggests agreement — like handing your keys to a valet or driving on Florida roads (which triggers implied consent to chemical testing under DUI law). Expressed consent requires an affirmative statement or signature. Silence is not consent. Neither is failing to object.
Florida courts have repeatedly emphasized that consent can be withdrawn at any time. If someone agrees to a medical procedure and then changes their mind before it starts, continuing anyway is battery. If a tenant gives a landlord permission to enter on Tuesday but revokes it Monday night, entering anyway is trespass. The law does not treat consent as irrevocable unless a statute explicitly says otherwise.
One detail most people miss — intoxication voids consent in criminal cases but not necessarily in contracts. A drunk person cannot consent to sex under § 794.011, but a tipsy homebuyer who signs a purchase agreement at a closing dinner is usually still bound by that contract unless they can prove incapacity rose to the level of incompetence.
DUI Refusals and the Implied Consent Trap
Florida’s implied consent law confuses people because the name suggests you already agreed to something. You did — by driving. Under § 316.1932, operating a motor vehicle in Florida means you consented to submit to chemical testing if an officer has probable cause to believe you’re impaired. But here’s the part that catches people off guard: refusing that test is a separate criminal offense.
A first refusal triggers a one-year license suspension through the Florida Highway Safety and Motor Vehicles (FLHSMV) and a second-degree misdemeanor charge. That misdemeanor carries up to 60 days in jail and a $500 fine under § 316.1939. A second refusal bumps it to a first-degree misdemeanor — up to a year in jail and a $1,000 fine — plus an 18-month suspension. About 15% of DUI arrests in Florida involve refusals, which means FLHSMV processes over 20,000 refusal suspensions every year.
The officer must read you a scripted warning outlining these consequences before you decide. If they skip that warning or botch the wording, the refusal charge often gets tossed. But officers in South Florida know this, and they almost never skip the script.
Refusing a roadside preliminary breath test (PBT) is different. That’s not an evidentiary test, so declining it does not trigger refusal penalties. The penalties only kick in when you refuse the post-arrest breath, blood, or urine test at the station or hospital. Defense attorneys across Broward and Palm Beach counties see clients who think refusing everything protects them. It does not. It just adds another charge.
One more wrinkle — if you’re unconscious, Florida law treats that as a withdrawal of your ability to refuse, not a withdrawal of implied consent. An officer can order a blood draw without a warrant. Courts have upheld this repeatedly.
You have 10 days from the date of the suspension notice to request a formal review hearing with FLHSMV. Miss that window and the suspension stands.
Written Consent in Real Estate Transactions
Florida real estate law assumes nothing. Oral agreements about property changes, lease amendments, or dual representation arrangements are nearly impossible to enforce. The statute books and DBPR regulations make this clear — if it matters, it needs to be in writing with expressed consent.
Under § 817.414, altering company property records without express written consent is a second-degree misdemeanor. That statute was written for corporate fraud cases, but real estate attorneys use the same principle in landlord-tenant disputes. Say a property management company changes the locks on a rental unit without tenant consent. The tenant’s lease is a company asset. Altering access without written authorization can trigger both civil liability and criminal exposure.
Landlord entry is another flashpoint. § 83.53 requires landlords to get tenant consent or a court order before entering a rental unit, except in emergencies. Courts interpret “consent” as expressed consent — meaning a lease clause that says “landlord may enter with 24 hours’ notice” is not blanket permission. The landlord still needs to give actual notice and get actual agreement each time. A tenant who does not respond to a text message has not consented.
Florida Realtors’ 2025 standard contract forms require express written consent for any material amendments. That includes changes to the closing date, purchase price, or inspection contingencies. Verbal agreements at the closing table do not count. Buyers and sellers who shake hands on a price reduction and then change their minds before signing an addendum can walk away with no penalty. Real estate agents who tell clients “we’ll just handle it verbally” are setting their clients up for a fight.
DBPR licensing rules go even further. Rule 61J2-10.025 requires brokers to obtain expressed client consent before disclosing material facts to third parties. A broker who tells a buyer’s agent that their seller is desperate to close without written permission from the seller can lose their license. DBPR does not treat this as a minor paperwork issue.
Medical Consent and Personal Injury Cases
Florida’s informed consent statute, § 766.103, requires healthcare providers to obtain expressed and informed consent before performing any procedure that carries material risk. “Informed” means the provider explained the risks, benefits, and alternatives in terms a reasonable patient would understand. “Expressed” means the patient affirmatively agreed, usually in writing.
Failing to get informed consent is negligence per se in Florida medical malpractice cases. The patient does not need to prove the provider was careless — just that consent was never obtained or was inadequate. About 12% of personal injury cases filed in Florida courts in 2025 involved consent disputes, according to the Florida Courts Annual Report. Most of those were medical negligence claims.
Say a surgeon performs a hysterectomy during what was supposed to be exploratory surgery, and the consent form only mentioned the exploratory procedure. That is a viable malpractice claim even if the surgery was performed flawlessly. The patient did not consent to the hysterectomy.
Consent forms in hospitals and surgical centers often bury risks in dense paragraphs of medical jargon. Florida courts have held that simply signing a form is not enough if the provider did not actually explain what the form said. Informed consent requires a conversation, not just a signature. Emergency situations are the exception — if a patient is unconscious and delaying treatment would cause serious harm, providers can proceed without consent.
Personal injury attorneys handling slip-and-fall or car accident cases run into consent issues when clients signed medical releases at the scene. Insurance adjusters show up at the hospital with a clipboard and ask injured people to sign forms authorizing release of all medical records. Most people sign without reading. Those releases are often enforceable, but not always. If the adjuster misrepresented what the form covered or the patient was heavily medicated, the release can be challenged.
When Consent Does Not Matter
Certain Florida statutes eliminate the consent defense entirely. Under § 794.011, a child under 12 cannot consent to sexual activity, period. The same is true for anyone who is mentally incapacitated to the point they cannot understand what is happening. Consent is legally impossible.
Florida’s Romeo and Juliet exception (§ 794.05) allows 16- and 17-year-olds to consent to sexual activity with partners under 24, but that is a narrow carve-out. Outside that exception, minors under 18 generally cannot give legally binding consent in criminal cases.
Contracts are different. Minors can enter contracts in Florida, but those contracts are voidable at the minor’s option until they turn 18 (or shortly after). A 17-year-old who signs a lease can walk away from it with no penalty. The landlord cannot.
Coercion voids consent in every context. If someone agrees to something because they were threatened, manipulated, or placed under duress, Florida law treats that agreement as void. The tricky part is proving coercion. “I felt pressured” is not enough. You need evidence of actual threats, economic duress, or abuse of authority.
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Documentation Beats Memory Every Time
Florida courts do not trust oral agreements about consent. Written proof wins. That applies to real estate contracts, medical releases, tenant permissions, and even criminal cases where consent is a defense.
Attorneys who handle landlord-tenant disputes keep every text message, email, and signed notice related to property access. A landlord who claims the tenant gave verbal permission to enter will lose if the tenant produces a text message saying “do not come by today.” The written record controls.
The same principle applies in personal injury cases. If a doctor claims they explained surgical risks verbally but the consent form says nothing about those risks, the form is what the jury will see. Providers who rely on “I always have that conversation” without documenting it lose those cases.
Real estate transactions in South Florida routinely fall apart because buyers and sellers think a handshake or a verbal agreement is binding. It is not. Florida’s Statute of Frauds requires real estate contracts to be in writing, and courts extend that same logic to amendments and consents. If you agreed to let the buyer move in early, put it in writing. If the seller agreed to leave the appliances, get a signed addendum.
Cases like B.B. v. State, 659 So. 2d 256 (Fla. 1995), and Jones v. State, 640 So. 2d 1084 (Fla. 1994), confirm that Florida courts apply strict scrutiny to consent claims in criminal cases. The burden is on the person claiming consent was given, and vague or inconsistent evidence does not cut it.
If you are involved in any transaction, medical procedure, or legal situation where consent matters, assume you will need to prove it later. Sign the form. Save the email. Get it in writing. Memories fade. Documents do not.
