John J. Gilsenan has extensive criminal defense experience as an Assistant Federal Public Defender and as a state public defender. His New York State criminal-defense experience includes representing people facing serious felony charges, including gun and drug prosecutions. He has special expertise in representing people charged in complex drug/gun conspiracy cases.
What Is a Search Warrant in New York?
A search warrant is a court order authorizing police to search a specifically identified place, vehicle, or person and seize specified evidence. In New York State criminal cases, search-warrant procedure is principally governed by Article 690 of the Criminal Procedure Law (CPL). A warrant can authorize police to look for stolen or unlawfully possessed property, property used to commit or conceal a crime, and evidence tending to show that a crime occurred or that a particular person participated in it.
For someone whose home, car, phone, or other property has been searched, the fact that police had a warrant does not necessarily end the legal inquiry. A Rochester criminal defense lawyer may examine how the warrant was obtained, exactly what it authorized, and how police executed it.
What Must Police Show to Obtain a New York Search Warrant?
Police generally do not simply decide for themselves that they may search a home or other protected location. An authorized public servant applies to a judge and provides sworn factual allegations supporting the request.
Under CPL 690.35 and 690.40, the application must establish reasonable cause to believe that the property described in the application may be found in the particular place, vehicle, or person to be searched. New York courts commonly describe the constitutional standard as probable cause: information sufficient to support a reasonable belief that evidence of criminal activity will be found at the place to be searched.
The warrant must also identify with sufficient particularity what police may search and what they may seize. These requirements are important because a search warrant is not supposed to operate as unlimited permission for police to search wherever they choose.
What Happens When Police Execute the Warrant?
New York law regulates when and how a search warrant may be executed. Under CPL 690.30, a warrant generally must be executed within ten days after it is issued. Unless the judge specifically authorizes otherwise, execution generally occurs between 6:00 a.m. and 9:00 p.m.
CPL 690.50 ordinarily requires police executing a premises or vehicle warrant to give, or make a reasonable effort to give, notice of their authority and purpose before entering. A judge can authorize entry without notice when the statutory requirements for that authorization are established.
The exact terms of the warrant matter. The document should describe the location or person to be searched and the property sought, and it may contain special authorization concerning nighttime execution or entry without notice.
Can a New York Search Warrant Be Challenged?
Yes. A defendant may seek to challenge—or “controvert”—a search warrant and request suppression of evidence obtained through an unlawful search.
A defense attorney may examine whether the warrant application established probable cause, whether the information was sufficiently connected to the specific place searched, whether the warrant adequately described the search and items to be seized, and whether police remained within the warrant's lawful scope.
Search-warrant litigation can be especially important in New York gun and drug prosecutions because firearms, narcotics, phones, records, money, and other physical evidence recovered during a search may become central evidence in the prosecution's case. In appropriate circumstances, successful suppression litigation can prevent unlawfully obtained evidence from being used against the accused.
Cell Phones and Digital Search Warrants
Search warrants increasingly involve cell phones and other electronic devices. These cases can raise additional questions about what information police were authorized to search and whether the warrant established a sufficient connection between the alleged crime, the device, and the particular data sought.
New York courts continue to address these issues. In 2026, for example, courts considered challenges involving probable cause for cell-phone warrants and the timing of forensic examinations of seized devices. Digital-search issues therefore deserve careful review rather than an assumption that seizure of a phone automatically authorizes an unlimited examination of everything stored on it.
Why Early Review by a Rochester Criminal Defense Lawyer Matters
If police executed a search warrant in connection with a New York State investigation, the warrant and supporting materials may become an important part of the defense investigation. Counsel can determine what was authorized, identify the factual basis presented to the issuing judge, compare that authorization with what police actually searched and seized, and evaluate whether a suppression motion is appropriate.
This can be particularly significant for people facing felony gun charges, drug charges, possession offenses, or other cases built around evidence recovered from a home, vehicle, or cell phone. Search-warrant issues are often fact-specific, and the legality of a search should be evaluated from the actual warrant papers and circumstances rather than from the fact that police announced they had a warrant.
About the Author: John J. Gilsenan
John J. Gilsenan is a criminal defense attorney with extensive experience representing accused people as both a state public defender and an Assistant Federal Public Defender. His New York State practice has included serious felony matters, including gun and drug charges. That experience informs his approach to search-warrant review, suppression litigation, discovery, motion practice, and trial preparation.
For people searching for a Rochester criminal defense lawyer, criminal defense attorney in Rochester, NY, New York search warrant lawyer, gun charge lawyer Rochester NY, drug charge lawyer Rochester NY, or Monroe County criminal defense attorney, early review of the search warrant and the circumstances surrounding the search can be an important part of developing the defense.
This article provides general information about New York law and is not legal advice. Reading it does not create an attorney-client relationship, and every search-warrant issue requires an individualized assessment.