Slipping on an icy New York City sidewalk can lead to severe injuries, including broken bones, herniated discs, or head trauma. Many hurt pedestrians assume property owners are automatically responsible, or conversely, that winter weather makes falls unavoidable.

In reality, New York law balances a strict 4-hour clearing deadline against the storm in progress defense. Knowing when precipitation stopped and whether a landlord improperly piled or cleared snow determines who is legally accountable for your medical bills and lost earnings.

The Four Hour Rule, Stated Precisely

The requirement is in the New York City Administrative Code at § 16-123, which sets out property owners’ duties for the removal of snow, ice, and dirt from sidewalks.

Every owner, lessee, tenant, occupant, or other person having charge of any building or lot of ground in the city that abuts a street where the sidewalk is paved must remove snow or ice from the sidewalk and gutter within four hours after the snow ceases to fall, with the time between 9:00 PM and 7:00 AM not included in the four-hour period.

The exclusion of the overnight window is the part that people get wrong, so it is worth working through what it actually produces.

How the NYC 4-Hour Snow Removal Clock Operates

Calculating the clearing deadline requires factoring in the overnight pause between 9:00 PM and 7:00 AM under NYC Administrative Code Section 16-123:

  • Snow stops at 1:00 PM: Standard 4-hour countdown applies. The removal deadline is 5:00 PM the same day.
  • Snow stops at 3:00 PM: Standard countdown applies. The removal deadline is 7:00 PM the same day.
  • Snow stops at 8:00 PM: 1 hour passes before 9:00 PM, pausing the clock overnight. The remaining 3 hours resume at 7:00 AM, making the deadline 10:00 AM the next morning.
  • Snow stops between 9:00 PM and 7:00 AM: The clock does not begin until 7:00 AM. Adding 4 hours sets the mandatory deadline at 11:00 AM the following morning.

The general rule that follows is easy to remember: if snow stops any time between 9:00 PM and 7:00 AM, the sidewalk must be cleared by 11:00 AM.

That single rule explains a great many morning falls. A person walking to the subway at 8:30 AM on an uncleared sidewalk after an overnight snowfall has fallen on a sidewalk that the Administrative Code did not yet require anyone to have cleared. The same fall at noon is a very different case.

The Queens and Staten Island Provision

There is a specific accommodation worth knowing. In Queens and Staten Island, an owner, lessee, tenant, or occupant in charge of ground abutting a paved street for a linear distance of five hundred feet or more is considered to have complied if they began removing the snow or ice before the four hours expired and then continued and completed the removal within a reasonable time.

That applies to large frontages in those two boroughs. It is not a general extension, and it does not apply in Manhattan, Brooklyn, or the Bronx.

The Storm in Progress Doctrine

Now the rule that runs the other way.

Under New York common law, a property owner is not required to clear snow and ice while a storm is still in progress. The owner is entitled to a reasonable time after the storm ends to take corrective action, and a fall that occurs during the storm, or before that reasonable period has run, generally does not support liability.

The reasoning is practical rather than generous. Clearing a surface while precipitation continues to fall on it accomplishes nothing, and the law does not demand a futile act.

This is the defense raised in nearly every snow case, and it succeeds often. Which is why the timing evidence matters more than almost anything else.

The Limit That Matters Most

Storm in progress is not a complete shield, and there is an important exception that decides a significant share of these cases.

An owner who chooses to clear during or shortly after a storm must not make the condition worse. Where the owner’s own snow removal efforts created a hazard that would not otherwise have existed, the storm in progress doctrine does not excuse it.

The classic version is a partial or negligent shoveling job. Snow is cleared, a thin layer of packed snow or meltwater is left behind, temperatures drop, and the result is a sheet of ice on a surface that now looks cleared and safe. That is worse than untouched snow, because untouched snow is visible and a pedestrian adjusts to it.

Common landlord actions that create actionable sidewalk hazards include:

  • Incomplete Shoveling: Clearing surface snow while leaving a thin, packed layer that melts and freezes into a hidden sheet of ice.
  • Mound Thaw and Refreeze: Shoveling snow into high piles along curb cuts or sidewalk edges, which melt during warmer daylight hours and refreeze across pedestrian paths overnight.
  • Snow Displacement: Shoveling snow off private stoops, driveways, or commercial lots directly onto public walking paths.
  • Narrow or Inconsistent Paths: Clearing a path so narrow that pedestrians must walk on untreated ice, or applying salt to isolated patches while leaving surrounding areas slick.
  • Defective Drainage Discharge: Directing meltwater from clogged roof gutters, downspouts, or awning runoffs onto the sidewalk where it freezes, turning a maintenance issue into a severe drainage hazard.

The Core Legal Distinction: The storm in progress defense only addresses whether a property owner had sufficient time to clear falling snow. It provides zero legal shield if an owner’s own negligent clearing efforts created a dangerous condition.

Old Ice Is a Different Case

There is a further limit. Where the ice a person fell on is not the product of the current storm, but of an earlier one, storm in progress does not apply to it.

Layered ice, refrozen meltwater from days earlier, or a persistent patch in the same spot after every snowfall are all conditions that predate the storm being invoked as a defense. Proving that requires weather history and, ideally, evidence of the condition before the current storm.

The Rule the Code Does Not Create

This is a technical point that matters a great deal, and it is worth being accurate about rather than overstating the four-hour rule.

Section 16-123 is a Sanitation provision. It creates a duty owed to the City, enforced by summons and fine.

Civil liability to an injured pedestrian runs through a different provision. New York City Administrative Code § 7-210 places the duty to maintain the sidewalk in a reasonably safe condition on the owner of the abutting property and makes that owner liable for injuries proximately caused by a failure to maintain it.

So a violation of the four-hour rule is not, by itself, an automatic finding of liability. What the four-hour rule does is supply a benchmark. It is the City’s own written statement of how long is too long, and it is powerful evidence on the question of whether an owner acted reasonably. A property owner who left a sidewalk untouched for eighteen hours after the snow stopped is arguing against the City’s own standard.

Used properly, § 16-123 frames the reasonableness question. It does not replace it.

Who Owes the Duty

Section 7-210 places the duty on the abutting property owner, expressly including the intersection quadrant for corner properties. It contains one exception: it does not apply to one-, two-, or three-family residential property that is, in whole or in part, owner-occupied and used exclusively for residential purposes, and where the exception applies, liability remains with the City.

The word exclusively does a lot of work. A small building with a ground floor store is not used exclusively for residential purposes, so the exception does not apply to it.

Note also that § 16-123 reaches a broader group than § 7-210: the owner, lessee, tenant, occupant, or other person having charge of the property. In a commercial context, that frequently means both the building owner and the ground floor tenant have obligations, and both may be proper defendants.

Where You Fell Changes the Law That Applies

This is the distinction that gets missed most often, and it can change the analysis completely. The four-hour rule and § 7-210 both govern the public sidewalk. A great many winter falls do not happen on the public sidewalk.

On the public sidewalk. Section 7-210 and the four-hour rule apply as described above. The abutting owner has the duty.

At a building entrance, in a vestibule, or in a lobby. This is not the public sidewalk. It is the property owner’s premises, governed by ordinary premises liability principles: the owner owes a duty of reasonable care, and the question is notice of the condition rather than compliance with a snow removal deadline. The four-hour rule does not apply, and neither does its protection.

That matters because tracked-in water in a building entrance is one of the most common winter falls there is, and the analysis is entirely different. The relevant questions become whether mats were placed, whether they were adequate for the conditions, how often the floor was inspected and dried, whether warning signs were used, and whether the owner had a written inclement weather procedure and actually followed it. Porter logs and cleaning schedules become the central documents.

On a stoop, steps or a landing. Also the premises rather than the sidewalk. Steps raise their own issues: handrails, tread condition, and whether the surface was treated.

In a parking lot or on a private walkway. Premises liability again, with the added question of whether a snow removal contractor was engaged and what its contract required.

Subway Stairs, Transit Platforms, or Bus Stops: Slips occurring on transit property involve public entities such as the MTA or NYCTA. These claims require a formal Notice of Claim served within 90 days under New York Public Authorities Law Section 1212, followed by a lawsuit commenced within 1 year and 90 days.

NYCHA Housing Development or City-Owned Property: If you fell on walkways managed by the New York City Housing Authority (NYCHA) or municipal buildings, General Municipal Law Section 50-e mandates serving a Notice of Claim within 90 days of the accident. Failing to meet this strict 90-day window permanently terminates your right to recover damages.

The practical instruction is simple: fix the exact location before anything else. A few feet can move a case from the sidewalk framework to the premises framework, or into a claim against a public authority with a deadline measured in weeks.

Who Owes the Duty, and Who Actually Did the Work

Winter cases frequently involve more parties than an injured person expects, and identifying all of them early protects the claim.

The owner carries the § 7-210 duty for the sidewalk, and it is not escaped by delegating the work.

The commercial tenant is reached by § 16-123, which applies to the owner, lessee, tenant, occupant or other person having charge of the property. In a commercial building, the ground floor tenant is very often the party that actually shovels, and its lease may make it responsible for doing so.

The managing agent may have operational responsibility under its management agreement.

A snow removal contractor may be the party that actually created the hazard, and a contractor that plowed snow into a pile that later melted and refroze across the walkway is a proper defendant. The contract is the document that establishes what was supposed to happen: how many inches triggered a visit, whether salting was included, and how often the site was to be revisited.

A superintendent or porter whose clearing work created the condition implicates the employer.

The reason to identify all of them is not to widen the net for its own sake. It is that the party who created the hazard and the party with the statutory duty are frequently different, insurance sits in different places, and a commercial tenant can be gone by the time a case is ready.

Time-Sensitive Evidence Needed to Prove Liability

Success in a snow or ice injury claim depends on gathering objective, verifiable evidence before conditions thaw or records disappear:

  • Certified Climatological Reports: National Weather Service hourly precipitation and temperature records pinpoint the exact minute snowfall stopped, legally disproving invalid storm in progress defenses.
  • Immediate Scene Photography: High-resolution photographs showing close-ups of the ice, nearby snow piles, untreated areas, and cleared adjacent sidewalks. Proving that neighboring property owners successfully cleared their walkways demonstrates that the defendant failed to meet standard maintenance obligations.
  • Surveillance Camera Preservation: Video footage from storefront cameras, residential doorbell systems, and municipal feeds captures the exact timeline of events. Because security systems frequently overwrite footage within days, sending immediate spoliation and video preservation notices to property owners and nearby businesses is critical.

Records

The City’s snow operations records, 311 complaints for the address, any Sanitation summonses issued for failure to clear, and the property’s own maintenance or vendor records if a snow removal contractor was engaged. A snow removal contract is a useful document: it establishes who was supposed to do what, and when.

The Department of Sanitation publishes information about snow operations and property owner responsibilities.

If You Have Fallen on Snow or Ice

The steps that matter most are the ones taken in the first day or two.

Photograph the surface before anyone clears it or before it melts, because the condition will be gone within hours. Note the exact time and location. Report the fall to the property owner or business and ask for an incident report. Seek medical attention the same day. Identify witnesses. Keep your footwear. Send or have counsel send preservation demands for video quickly.

And write down what you remember about the weather that day, including when it had stopped snowing, because that recollection will be compared against the official record and it is useful to have it fixed early.

A note of caution about insurers. The first questions in a recorded statement in a snow case are almost always about what you were wearing, whether you were looking down, whether you saw the ice, and whether you were in a hurry. Those questions exist to build a comparative fault argument. It is reasonable to decline to give a recorded statement until you have spoken with a lawyer.

Comparative Fault Grounded in NY CPLR Section 1411

Under New York CPLR Section 1411 (Article 14-A), New York operates under a pure comparative negligence standard. An injured pedestrian’s own potential share of responsibility reduces their financial recovery proportionally rather than barring a claim entirely.

Insurance adjusters routinely attempt to lower payout amounts by arguing that a winter hazard was open and obvious, that a pedestrian walked too quickly, or that inappropriate footwear was worn. While defense teams use these arguments to shift blame, an open and obvious condition does not eliminate a property owner’s primary legal duty to maintain a reasonably safe walkway under Section 7-210.

Black Ice, and Why It Is Treated Differently

One condition deserves separate mention because it produces a disproportionate share of serious winter injuries and because the usual defense arguments fit it badly.

Black ice is thin, transparent ice that takes on the color of the surface beneath it. On grey concrete in flat winter light, it is effectively invisible, which is exactly why people walk onto it at full stride and fall hard.

Two key legal factors distinguish black ice claims from standard snow cases:

  • Defeating the Open and Obvious Defense: Defense attorneys cannot credibly argue that a pedestrian should have seen and avoided a hazard that is, by definition, transparent and invisible. Close-up photographs taken in ambient winter lighting serve as vital evidence to refute this defense strategy.
  • Proving Thaw and Refreeze Mechanics: Black ice rarely forms directly from actively falling snow. It typically develops when snow piled on ledges, stoops, or curb lines melts during daytime hours, trickles across the walkway, and refreezes as night temperatures drop. Proving a prior thaw-and-refreeze cycle converts an active storm defense into a straightforward property maintenance failure.

Establishing that sequence takes temperature data rather than precipitation data. Hourly temperature records showing a daytime thaw followed by an overnight freeze, combined with photographs of where snow had been piled, can convert what looks like an unavoidable winter hazard into an ordinary case about how a property was maintained.

Talk With Our Firm About a Snow and Ice Fall

These cases are decided on timing, on the condition of the surface, and on whether someone’s own clearing efforts made things worse. All three are provable, and all three depend on evidence that starts disappearing the moment the temperature rises.

Mark E. Seitelman Law Offices has handled snow, ice, and sidewalk falls throughout New York City for decades. We know how to establish when the snow stopped, how to obtain video before it is overwritten, and how to meet a storm in progress defense. If you were injured on an icy sidewalk, we can review what happened and explain your options. You can also read more about our work on sidewalk accidents and about what to do after a slip and fall on someone’s property.

References

  • New York City Administrative Code § 16-123, Removal of snow, ice and dirt from sidewalks; property owners’ duties
  • New York City Administrative Code § 7-210, Liability of real property owner for failure to maintain sidewalk in a reasonably safe condition
  • New York City Department of Sanitation, snow operations and property owner responsibilities
  • National Weather Service climatological records

This article provides general information about New York law and is not legal advice for any specific situation.