Master The Supreme Court recognized a limited "protective sweep" of a home incident to an in-home arrest, allowing cursory inspections for dangerous persons under defined standards. with this comprehensive case brief.
Maryland v. Buie is a foundational Fourth Amendment decision that created and cabined the doctrine of a home "protective sweep"—a brief, cursory search for dangerous persons that officers may conduct incident to an in-home arrest. Building on the officer-safety rationale that undergirds Terry v. Ohio and the spatial limits derived from Chimel v. California, the Court established a two-tier framework. Officers may, as a precaution and without additional justification, look in spaces immediately adjoining the arrest site from which an attack could be launched. To go further, they must possess specific, articulable facts giving rise to a reasonable suspicion that another person posing a danger is present.
For law students, Buie is a staple of Criminal Procedure because it tests mastery of multiple Fourth Amendment concepts at once: the special sanctity of the home, the search-incident-to-arrest exception, officer-safety balancing, reasonable suspicion, scope and duration limits, and the interaction with plain view. It is frequently examined through nuanced hypotheticals involving multi-room dwellings, simultaneous arrests, and the presence (or absence) of facts suggesting an accomplice, all of which probe the boundaries of what Buie permits.
Maryland v. Buie, 494 U.S. 325 (1990)
Police investigating an armed robbery obtained arrest warrants for several suspects, including respondent Buie. A team of officers went to Buie's residence to execute the warrant. After entering the home, officers shouted into the basement for Buie to come out. Buie emerged from the basement and was arrested on the first-floor landing. Concerned about officer safety and the possibility of an accomplice still in the house, another officer descended into the basement to conduct a quick check for persons. During this cursory inspection—limited to places where a person could hide—the officer observed in plain view a red running suit consistent with eyewitness descriptions of the robber's clothing and seized it. At trial, Buie moved to suppress the running suit, arguing the basement sweep violated the Fourth Amendment because it was not supported by a warrant or probable cause. The trial court denied the motion and Buie was convicted. The Maryland Court of Appeals reversed, holding that the sweep was not justified under the Fourth Amendment. The State sought and obtained certiorari.
Does the Fourth Amendment permit officers, incident to executing an arrest warrant inside a suspect's home, to conduct a limited protective sweep of the premises without a search warrant, and if so, what quantum of suspicion and scope govern such a sweep?
Incident to an in-home arrest, officers may conduct a protective sweep of the residence under a two-tier standard: (1) Without probable cause or reasonable suspicion, officers may, as a precautionary matter, look in closets and other spaces immediately adjoining the place of arrest from which an attack could be immediately launched. (2) To extend the sweep beyond immediately adjoining spaces, officers must have specific, articulable facts, which, taken together with rational inferences from those facts, would warrant a reasonably prudent officer in believing that the area to be swept harbors an individual posing a danger. The sweep is a cursory inspection only of places where a person might hide and may last no longer than is necessary to dispel the reasonable suspicion of danger and to complete the arrest and depart the premises. Items observed in plain view during a lawful protective sweep may be seized.
Yes. The Fourth Amendment permits a limited protective sweep of a home incident to an in-home arrest under the standards above. The Supreme Court reversed the judgment of the Maryland Court of Appeals and remanded for further proceedings consistent with this rule.
The Court balanced the significant privacy interest in the home against the compelling governmental interest in officer safety during arrests. Arrests in residences expose officers to particular risks because accomplices may be nearby and capable of launching an attack. Drawing from Chimel v. California, the Court acknowledged that the search-incident-to-arrest doctrine authorizes limited intrusions tied to safety and control concerns. It also analogized to Terry v. Ohio and Michigan v. Long, which allow minimally intrusive searches for weapons based on reasonable suspicion of danger. From those principles, the Court crafted a narrow, safety-based exception: officers can, as a precaution without additional justification, check places immediately adjoining the arrest site (such as nearby closets or hallways) from which an attack could be launched. Beyond those spaces, however, the heightened sanctity of the home demands more: specific, articulable facts supporting a reasonable belief that a dangerous person is present. The scope must remain strictly limited to a quick, cursory inspection of areas where a person might hide (not drawers or containers), and its duration must not exceed the time necessary to dispel suspicion and complete the arrest. Because items seen in plain view during a lawful sweep are not the fruit of an unlawful search, they are admissible. The Court rejected a probable-cause requirement as inconsistent with the officer-safety rationale and the minimal nature of the intrusion, but it equally rejected any open-ended authority to scour a house. By setting a calibrated standard and scope, the Court preserved the privacy of the home while recognizing the practical dangers that officers face during in-home arrests.
Buie is central to the law of search and seizure because it defines a discrete, limited safety search within the most protected space—the home. It operationalizes the officer-safety rationale in a way that coexists with the strong presumption against warrantless home searches by demanding articulable facts for sweeps beyond immediately adjoining spaces and by sharply limiting scope and duration. For students, Buie often appears alongside Chimel and Terry to test whether one can parse distinct justifications (incident-to-arrest versus protective sweep), apply tiered suspicion thresholds, and police the boundary between permissible person-locating sweeps and impermissible evidence-gathering searches.
It is the area directly abutting the arrest location from which a person could launch an immediate attack—e.g., an adjacent closet, bathroom, hallway, or room opening directly onto the arrest site. It does not authorize a sweep of the entire floor or distant rooms; moving beyond the adjoining spaces requires specific, articulable facts that another person posing a danger is present.
Facts may include credible information about accomplices, observations of movement, sounds suggesting another person, partially opened hiding places, the violent nature of the offense, time of day, number of officers, and the layout of the home—provided they combine to suggest a reasonably prudent officer would believe someone dangerous may be present. Generalized hunches or the mere seriousness of the crime, without more, are insufficient.
The sweep is strictly limited to a quick, cursory inspection of spaces where a person could hide (e.g., behind curtains, under beds, in closets or large containers). Officers may not search drawers, small containers, or areas too small to hide a person. The sweep must last no longer than necessary to dispel the reasonable suspicion of danger and to complete the arrest and depart; it is not a license for a prolonged or thorough search.
Yes, if the sweep is lawful and the evidence is in plain view—meaning officers are lawfully present, the item's incriminating nature is immediately apparent, and officers have lawful access to it—they may seize it. The protective sweep does not convert into an evidence-gathering search, but plain-view seizures are permitted when those conditions are satisfied.
Buie addressed sweeps incident to in-home arrests, and many courts tie the doctrine to that context. Some jurisdictions have extended Buie's safety rationale to other lawful in-home entries (e.g., consent or exigent circumstances) upon reasonable suspicion that a dangerous person is present. On exams and in practice, identify the basis for entry and whether officer-safety concerns are supported by specific, articulable facts.
Maryland v. Buie creates a carefully bounded doctrine that acknowledges the unique risks of in-home arrests while respecting the home's constitutional sanctity. By authorizing a limited, tiered protective sweep—automatic for immediately adjoining spaces and suspicion-based for anything further—the Court harmonized officer safety with the Fourth Amendment's core protections.
For practitioners and students alike, Buie is indispensable: it supplies the analytical framework for separating permissible, safety-driven, person-directed sweeps from impermissible, evidence-seeking searches. Mastery of Buie's thresholds, scope, and duration limits is essential to evaluating home search problems and to ensuring that the protective sweep remains a narrow exception rather than a broad license to search.
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