What Is Negligent Security And When Can You Sue?
Posted March 28, 2026 in Personal Injury
Most people understand that a property owner can be held liable when someone slips on a wet floor or trips over a broken step. What’s less well known is that property owners can also face liability when someone is assaulted, robbed, or otherwise harmed by a third party on their premises — if the owner failed to take reasonable steps to prevent it.
This is the core of negligent security law. It’s a branch of premises liability that holds businesses, landlords, and property managers responsible not just for physical hazards, but for foreseeable criminal ones. Below, our friends at Warner & Fitzmartin – Personal Injury Lawyers explain when you might be able to sue for negligent security.
What Negligent Security Actually Means
Property owners aren’t expected to stop every crime that could possibly happen on their property. That would be an impossible standard. What the law does require is that owners take reasonable precautions against foreseeable criminal activity — and that when they fail to do so, they can be held accountable for injuries that result.
The key word is foreseeable. A crime is foreseeable when the circumstances reasonably suggest it could happen. Prior incidents on or near the property, the property’s location in a high-crime area, the nature of the business, and even complaints from tenants or guests can all establish that a reasonable owner should have anticipated the risk and done something about it.
According to the Bureau of Justice Statistics, there were 22.5 violent victimizations per 1,000 persons age 12 or older in the United States in 2023. A significant portion of those incidents occur in or around commercial and residential properties — places where negligent security claims arise most often.
Where These Cases Typically Happen
Negligent security claims come up in predictable settings. Apartment complexes and rental properties are among the most common — tenants and guests expect that common areas, parking lots, laundry rooms, and building entrances will have basic security measures in place. When those measures are absent or inadequate and someone is attacked, the landlord may bear responsibility.
Hotels and motels face similar exposure. A guest who is assaulted in a poorly lit parking area, through an unsecured exterior door, or in a room with a broken lock has a potential claim against the property. Bars and nightclubs are another frequent source of negligent security litigation, particularly when a fight escalates to serious injury and the venue failed to employ adequate security staff or ignored obvious warning signs of escalating tension.
Shopping centers, convenience stores, parking garages, and college campuses also generate these claims regularly. Anywhere that large numbers of people congregate — especially late at night or in areas with documented crime history — creates a context where the foreseeability question becomes important.
What A Plaintiff Has To Prove
To succeed in a negligent security claim, an injured person generally needs to establish four things. First, that the property owner owed them a duty of care — which typically means they were a lawful visitor, tenant, or customer. Second, that the owner breached that duty by failing to provide reasonable security measures. Third, that the breach was a cause of the injury. Fourth, that actual damages resulted.
The foreseeability of the crime is usually where these cases are won or lost. Plaintiffs look for evidence like prior police reports of crimes at the location, prior complaints made to management, documented incidents that went unaddressed, or specialist testimony about security standards for that type of property. Defendants argue that the crime was random, unforeseeable, or that the victim’s own actions contributed to what happened.
What “Reasonable Security” Looks Like
There’s no universal checklist, because what’s reasonable depends heavily on the property type and circumstances. A convenience store open late at night in an area with documented robbery history faces different expectations than a suburban office building. Courts evaluate what security measures were in place and compare them to what a reasonably careful property owner in similar circumstances would have done.
Common security measures that come up in these cases include working locks on exterior doors and gates, functioning lighting in parking areas and common spaces, security cameras in visible locations, security personnel during high-risk hours, and policies for responding to known threats or complaints. The absence of any of these — especially when prior incidents suggested the need — can form the basis of a negligent security claim.
The Third-party Criminal Act Defense
Property owners frequently argue that they can’t be held responsible for the independent criminal acts of a third party — that the real cause of the injury was the criminal, not any failure on the owner’s part. This argument has some legal force, but it doesn’t automatically defeat a negligent security claim.
Courts recognize that when a property owner’s failure to act creates or significantly increases the opportunity for crime, that failure is a contributing legal cause of the resulting injury — even if a third party actually committed the act. The criminal doesn’t eliminate the owner’s liability; they share in it.
If You Were Injured On Someone Else’s Property
The evidence in negligent security cases tends to disappear quickly. Surveillance footage gets overwritten. Maintenance logs get discarded. Witnesses move on. If you were assaulted, robbed, or otherwise harmed on a property where inadequate security may have played a role, preserving evidence as early as possible matters enormously.
Consulting with a qualified personal injury lawyer promptly gives you the best chance to investigate the property’s security history, obtain relevant records, and understand whether you have a viable claim.