By Todd Duncan, NIRMA Law Enforcement and Safety Specialist
The Fourth Amendment draws a firm constitutional line at the entrance to a person’s home. Understanding where that line exists and what deputies can lawfully do at that boundary is critical when making warrantless arrests.
The “Threshold” Rule
The U.S. Supreme Court’s decision in United States v. Santana, 427 U.S. 38 (1976) is the leading case on doorway arrests. In Santana, officers approached a suspect who was standing in her doorway partially exposed to public view. The Court held that the doorway (or threshold) is a public place for Fourth Amendment purposes. Because the suspect was in a public place, officers could lawfully arrest her without a warrant based on probable cause.
When Santana retreated into her home, officers followed and completed the arrest. The Court upheld this entry under the doctrine of hot pursuit, an exigent circumstance.
Key Takeaways
- A person standing in the doorway/threshold may be arrested without a warrant if probable cause exists.
- The threshold is a “bright line” demarcation between public and private space.
What Deputies Cannot Do
While Santana allows arrests at the threshold, it does not authorize deputies to enter a home without a warrant. The Supreme Court has consistently held that the home is the most protected area under the Fourth Amendment.
If a suspect is inside the home, even slightly, deputies may not:
- Reach into the residence to grab or pull the suspect out
- Cross the threshold, even minimally, without legal justification
Courts have emphasized that any physical intrusion into the home, “even a fraction of an inch,” is a search and seizure requiring Consent, a Recognized Exception to the warrant requirement (i.e. exigent circumstances), or a Warrant, easily remembered as “C.R.E.W.”
Required Justifications for Entry
Deputies may only enter a home to make an arrest if one of the following applies:
- Consent
- Voluntary and valid consent from an occupant with authority over the premises
- Recognized Exception (i.e. exigent circumstances)
- Hot pursuit of a fleeing suspect. Caution- There is no automatic rule authorizing home entry during hot pursuit of a misdemeanant. Deputies must be able to articulate additional exigent circumstances. (Lange v. California, 141 S. Ct. 2011 (2021)
- Risk of escape
- Threat to safety (deputies or others)
- Imminent destruction of evidence
- Warrant
- Deputies may enter the home of a suspect named in an arrest warrant in accordance with NRS § 29-411 if there is probable cause to believe the suspect is home at the time of the entry/search.
Practical Guidance for Deputies
- Position matters: If the suspect is in the doorway (threshold), a warrantless arrest is generally lawful with probable cause.
- Inside means protected: If the suspect steps back inside, stop and reassess, do not reach in.
- When in doubt, get a warrant: Courts strongly favor warrants for in-home arrests.
- Avoid “body snatching”: Pulling a suspect out of a home without legal justification will likely violate the Fourth Amendment.
Bottom Line
Santana permits warrantless arrests at the doorway because the threshold is treated as a public place. However, the Constitution draws a strict boundary at the home itself. Crossing that line, even slightly, without a warrant, consent, or exigent circumstances will likely render the arrest unconstitutional and expose the county to potential civil rights litigation and potential liability.
Deputies should treat the threshold as a legal line they can approach but not cross without proper authority.
Stay professional. Stay accountable. Protect the badge.
