Drug dogs at home doors
Florida v. Jardines
In brief
The Supreme Court agreed with Florida’s highest court that police use of a drug-detection dog on Jardines’ porch was a Fourth Amendment search.
- Where it stands
- Decided
Decided 5-4 · March 26, 2013 · Opinion by Justice Kagan
- What it’s about
- The Supreme Court agreed with Florida’s highest court (affirmed its ruling) that police investigating Joelis Jardines’ home with a drug-detection dog on his front porch conducted a search under the Fourth Amendment.
- Who it affects
- For Jardines, the dog sniff on his front porch was classified as a search under the Fourth Amendment.
Summary: written with AI from the case record.

What it's about
The Court treated a home’s front porch as part of the home itself for Fourth Amendment purposes.
Question presented
Is a dog sniff at the front door of a suspected grow house by a trained narcotics detection dog a Fourth Amendment search requiring probable cause?
What the Court decided
Holding
The investigation of Jardines’ home was a “search” within the meaning of the Fourth Amendment. 73 So. 3d 34, affirmed.
- Result
- Affirmed
The Court's reasoning
The Court treated the front porch as part of the home for Fourth Amendment purposes. It decided that police using a drug-detection dog there to investigate Jardines’ home conducted a search.
The vote
From the opinions
“The law of trespass generally gives members of the public a license to use a walkway to approach the front door of a house and to remain there for a brief time.”
What's next
Lower courts must apply the ruling to the practice it addressed: using a drug-detection dog on a home’s front porch. No further step in Jardines’ case is identified.
Documents
Opinions
Audio
Docket activity
New analysis added
AI analysis generated: Case Briefing
New analysis added
AI analysis generated: Impact Analysis
AI analysis generated: Opinion Summary
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AI analysis generated: Decision Record
Case data updated: summary, question_presented, generation_metadata
Case data updated: question_presented, extraction_metadata
Audio Recording added: Oral Arguments - Jardines
Opinion added: Jardines
More questions
- Did the Court decide whether police had probable cause?
- The stated holding was that the investigation was a search; it did not separately state whether officers had probable cause.
- Why did Justice Alito disagree?
- He argued that trespass law lets members of the public, including police officers, briefly approach a home’s front door.
Sources
Primary materials plus reporting. Best-effort analysis: this explainer relies on a mix of primary materials and trusted secondary sources. Official filings and opinions remain authoritative.