Also known as:warrantless searches · search without warrant
Written by attorneys · grounded in primary & secondary sources — see below
A search by government agents that proceeds without a judicial warrant when an established exception to the Fourth Amendment warrant requirement justifies the intrusion.
Sources & Authorities
How it applies
Common Examples
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Roommate Consent to Shared Apartment
Wanda Williams and Warren Woods share an apartment. Warren answers the door when officers arrive with a tip about stolen goods. Warren invites the officers inside and points them to a closet containing the items. The evidence is later offered against Wanda at trial.
Housing Code Inspection Without Warrant
Winona Walsh owns a rental building. City inspectors arrive unannounced to check for code violations after a tenant complaint. They enter common areas and several units without a warrant or consent. Walsh later challenges the inspection results in court.
Select any source to read its text and confirm it supports the definition.
Cases
Casebooks
Dictionaries
Camara v. Municipal Court of City and County of San Francisco387 U.S. 523, 87 S.Ct. 1727, 18 L.Ed.2d 930 (1967)
Vehicle Search for Weapons
Wyatt Wilson is stopped for speeding late at night. Officers see a knife on the floorboard and notice he appears nervous. They search the passenger compartment and find a firearm under the seat. Wilson moves to suppress the gun.
Michigan v. Long463 U.S. 1032 (1983)
Public Phone Booth Conversation
Whitney Washington places a call from a glass phone booth on a public street. Officers attach a listening device to the outside of the booth and record her statements. Washington later seeks to exclude the recording from her trial.
Katz v. United States389 U.S. 347, 361 (1967)
Extended Homicide Scene Search
Wren Wallace's apartment is the site of a fatal shooting. Officers remain after the victim is removed and conduct a multi-hour search of every room and drawer. Wallace moves to suppress items found hours after the initial response.
Mincey v. Arizona437 U.S. 385 (1978)
Reliance on Invalid Warrant
Warren Woods's home is searched pursuant to a warrant later found to lack probable cause. Officers had relied in good faith on the warrant issued by a neutral magistrate. Woods moves to suppress the evidence seized during the search.
United States v. Leon468 U.S. 897 (1984)
Common questions
Frequently Asked
4
When does third-party consent justify a warrantless search of shared premises?+
Consent is valid if the third party has common authority over the premises. The consent permits officers to search and use the evidence against a non-consenting co-occupant. This rule rests on the reduced expectation of privacy that cohabitants share.
Does the automobile exception allow a warrantless search of containers inside a vehicle?+
Yes. When officers have probable cause to believe a vehicle contains contraband, they may search the entire vehicle and any containers that could hold the object of the search. The rule applies even when probable cause focuses on a particular container.
Is there a general exception for warrantless searches of homicide scenes?+
No. The seriousness of the crime alone does not create a broad exception. Officers may search without a warrant only while emergency conditions persist. Once the scene is secured, a warrant is required for further investigation.
When may officers conduct a warrantless search of an impounded vehicle?+
A search incident to arrest must occur substantially contemporaneously in time and place with the arrest. A later search at an impound lot hours after the arrest falls outside the exception and requires a warrant or another justification.
389 U.S. 347 (1967)White Collar Crime Law
…searching homes and seizing personal belongings withoutwarrants. The Amendment has been construed liberally to protect against warrantless searches of buildings and seizures of tangible effects, but until recently the Court refused to say eavesdropping fell within its restrictions. The first major case involving wiretapping, Olmstead…