In California criminal law, arrest warrants and search warrants serve entirely different legal functions.
While both require judicial approval based on probable cause, an arrest warrant authorizes law enforcement to take a specific person into custody, whereas a search warrant authorizes officers to search a specific location, vehicle, or person for evidence of a crime.
Understanding the constitutional distinctions between these warrants—and how law enforcement executes them—is critical if you or a loved one is under investigation, facing charges, or has had property seized by police.
Direct Comparison: Arrest Warrants vs. Search Warrants
While both require judicial authorization based on probable cause, arrest warrants and search warrants differ in their primary function, scope, and rules of execution under California law:
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Primary Purpose: An arrest warrant authorizes law enforcement to take a specific person into legal custody. A search warrant authorizes officers to search a specified location, vehicle, or item to locate and seize evidence of a crime.
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Constitutional Basis: Arrest warrants are governed by the Fourth Amendment and California Penal Code § 814. Search warrants are governed by the Fourth Amendment and California Penal Code § 1524.
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Required Legal Showing: To issue an arrest warrant, a judge needs probable cause showing that a specific individual committed an offense. To issue a search warrant, a judge needs probable cause showing that evidence of a crime currently exists at a specific location.
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Time Expiration Rules: An arrest warrant generally remains active until the individual is arrested, appears in court, or the warrant is recalled. A search warrant has strict time limits and must be executed within 10 calendar days of issuance under California Penal Code § 1534.
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Residential Entry Rules: An arrest warrant permits officers to enter the suspect's primary residence if they reasonably believe the suspect is inside. A search warrant permits officers to enter and search the specific premises, structure, or vehicle expressly identified in the warrant order.
What Is an Arrest Warrant in California?
An arrest warrant is an official court order signed by a judge or magistrate authorizing police officers to arrest a named individual.
How Arrest Warrants Are Issued
To obtain an arrest warrant under California law, law enforcement must submit a sworn declaration or affidavit establishing probable cause—a reasonable belief based on factual evidence that a specific individual committed an offense.
A valid California arrest warrant must explicitly state:
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The defendant's name (or a description clear enough to identify them)
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The alleged criminal offense
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The issuing court and county
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The signing judge's signature and date
When Is an Arrest Warrant Required?
Officers generally must secure an arrest warrant when:
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The alleged crime occurred outside the officer's immediate presence.
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A prosecutor files charges after a lengthy police investigation.
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A grand jury returns a formal indictment against an individual.
Note: If law enforcement officers personally observe a misdemeanor or felony being committed, they may make a warrantless arrest on the spot.
Can Police Enter Your Home to Execute an Arrest Warrant?
Under California Penal Code § 844, officers with a valid arrest warrant may enter the suspect's residence if they have reasonable grounds to believe the suspect is inside.
However, if officers suspect you are inside a third party's home (such as a friend or family member's house), an arrest warrant alone is usually insufficient—they must also obtain a separate search warrant for that residence absent exigent circumstances (Steagald v. United States).
What Is a Grand Jury Indictment?
A grand jury is a group of citizens selected to review evidence prosecutors present in secret proceedings. If the grand jury finds probable cause, it issues a "true bill" or indictment, which prompts the court to issue an arrest warrant automatically.
Grand jury indictments are most frequently utilized in complex felony or white-collar cases.
What Is a Search Warrant in California?
A search warrant is a judge's written order commanding law enforcement to search a specific place, person, or object for instrumentalities, contraband, or evidence of a crime.
Under the Fourth Amendment and California Penal Code § 1524, a valid search warrant must meet strict legal standards:
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Probable Cause: Supported by a sworn affidavit proving evidence is currently present at the target location.
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Particularity: Must specifically describe the exact address or area to be searched and detail the specific items to be seized.
Execution Window and Expiration
Search warrants do not last indefinitely. In California, police must execute a search warrant and return it to the court within 10 calendar days of issuance. If it is not executed within 10 days, the warrant expires and becomes void.
The Probable Cause Statement (Affidavit)
The foundation of any search warrant is the police officer's written affidavit. This document must set forth specific facts establishing three elements:
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A specific crime was committed.
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Evidence of that crime exists.
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The evidence is currently located at the specific place to be searched.
If the affidavit contains false statements made knowingly or with reckless disregard for the truth, the warrant can be challenged via a Franks hearing.
Knock-and-Announce Rules vs. No-Knock Warrants
California law generally requires officers executing a search warrant to knock, identify themselves, state their purpose, and allow a reasonable amount of time for occupants to open the door.
If officers face immediate danger, risk of evidence destruction, or futile conditions, a judge may approve a no-knock warrant or allow nighttime service (between 10:00 PM and 7:00 AM).
The Plain View Doctrine
If police are executing a lawful search warrant and discover illegal items or contraband not explicitly listed in the warrant, they may seize those items under the Plain View Doctrine—provided the officers were legally in a position to view the item and its incriminating nature was immediately apparent.
How to Challenge Unlawful Warrants: Penal Code 1538.5
If law enforcement executes an invalid warrant, exceeds the scope of a warrant, or searches without probable cause, your defense attorney can file a Motion to Suppress Evidence under California Penal Code § 1538.5.
Common Grounds for a Motion to Suppress:
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Lack of Probable Cause: The supporting affidavit failed to present sufficient facts.
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Overbroad Warrant: The warrant failed to describe items or places with adequate specificity.
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Improper Execution: Officers searched areas outside the warrant's scope or violated knock-and-announce rules.
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Stale Information: The facts supporting the warrant were too old to justify a current search.
Consequences of a Successful Warrant Challenge
If the court grants a PC 1538.5 motion:
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The illegally seized evidence is excluded under the Exclusionary Rule (often called "fruit of the poisonous tree").
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Without key evidence, prosecutors often must reduce or dismiss criminal charges entirely.
Frequently Asked Questions (FAQs)
What is the main difference between an arrest warrant and a search warrant?
An arrest warrant targets a person to take them into legal custody. A search warrant targets a physical location, vehicle, or property to search for and seize evidence related to a crime.
Can police arrest me without a warrant in California?
Yes. Police can make a warrantless arrest if they personally observe a crime, have probable cause to believe you committed a felony (even outside their presence), or under emergency (exigent) circumstances.
Do search warrants expire in California?
Yes. Under California Penal Code § 1534, police must execute a search warrant and return it to the court within 10 days of issuance. After 10 days, the warrant is legally void.
What happens if police enter the wrong address during a search?
If officers search the wrong address because of an unreasonable error or an overly vague warrant, the search may violate the Fourth Amendment. Courts can typically suppress any evidence seized during an improper entry.
Can I challenge a warrant after being charged with a crime?
Yes. Your defense attorney can challenge the validity of the warrant affidavit (a motion to traverse) or the lawfulness of the search (a motion to quash) through a Penal Code § 1538.5 hearing prior to trial.
Speak with an LA Criminal Defense Attorney
Warrant challenges involve technical constitutional arguments and strict court deadlines. Strategic pre-filing intervention by experienced legal counsel can prevent formal charges from being filed or result in key evidence being excluded.
If you or a family member are subject to an ongoing investigation, an active arrest warrant, or an unlawful search, contact Cron, Israels & Stark for a legal evaluation.
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Office Location: Los Angeles, CA
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Phone: (424) 372-3112
