If you slip and fall on ice or snow that was never removed from a sidewalk, parking lot, or store entrance, you might assume the property owner is automatically responsible. That assumption is wrong. The law does not require property owners to clear every flake of snow the instant it falls. Instead, courts look at whether the owner had a reasonable amount of time to remove the snow after the storm ended. This “reasonable time” rule is the single most important concept in ice-and-snow premises liability cases. Understanding it can mean the difference between winning compensation and walking away with nothing.

Premises liability is the legal principle that property owners must keep their premises reasonably safe for visitors. But when it comes to natural accumulations of ice and snow, most states give property owners a break. The general rule is that a property owner does not have to clear snow while it is still falling. You cannot expect someone to shovel a sidewalk during a blizzard because that would be pointless and unsafe. The duty to remove snow only begins after the storm has stopped. At that point, the owner must act within a reasonable period of time. What counts as reasonable depends on several factors, and that is where cases get complicated.

Courts weigh the severity of the storm, the time of day, the type of property, and whether the owner had actual or constructive notice of the dangerous condition. For example, a light dusting of snow that stops at 7 a.m. on a weekday in a busy commercial district should be cleared by the time the store opens at 9 a.m. Failing to do so could make the owner liable if someone slips. On the other hand, a two-foot blizzard that ends at midnight might give the owner until mid-morning to clear the parking lot, especially if the owner has to wait for plow trucks. The key is that the owner cannot simply ignore the snow and hope nobody falls. If the snow remains for days after the storm, the owner has had more than enough time and will almost certainly be liable.

Notice is another critical element. Even if snow has been on the ground for hours, the owner is not automatically liable if they did not know about it. But the law says that if the snow has been there long enough that a reasonable person would have known about it, then the owner is considered to have “constructive notice.” For example, if a sidewalk has not been shoveled for three days after a storm, the owner cannot claim ignorance. A judge or jury will say they should have known. The same logic applies to melting and refreezing. If the sun melts snow during the day and the runoff refreezes into ice at night, the owner has a duty to address that ice within a reasonable time after it forms.

Different types of properties face different standards. Commercial property owners, like stores, shopping malls, and office buildings, are held to a higher standard than residential homeowners because they invite the public onto their property for business purposes. A grocery store that does not salt its walkway during business hours is risking a lawsuit. A homeowner who does not shovel their front steps might face liability if a mail carrier or guest slips, but the standard is usually more forgiving. Some states even have “natural accumulation” laws that protect homeowners from liability for snow and ice that falls naturally, unless they somehow made the condition worse, like by shoveling snow into a pile that then melts and refreezes into a dangerous ice patch.

Local ordinances can override common law rules. Many cities and towns have specific laws requiring property owners to clear sidewalks within a certain number of hours after a snow event, often 12, 24, or 48 hours. Violating that ordinance does not automatically mean you win a lawsuit, but it is strong evidence that the owner was negligent. If a city ordinance says snow must be removed within 24 hours, and the owner waits 48 hours, a court will likely find that the owner failed in their duty.

There is also the “storm in progress” rule. As long as the storm is still active, the property owner has no duty to remove snow or warn about it. Once the storm ends, the clock starts ticking. But what if the storm is intermittent, stopping for a few hours and then starting again? Courts look at whether there was a genuine break in the storm that gave the owner a window to clear the snow. Usually, if snow resumes within a short period, the owner is not expected to clear during the lull.

If you are injured on ice or snow that was not removed, you need to prove that the owner had a reasonable amount of time to deal with it and failed to do so. Document the date and time of the fall. Check weather records for when the snow or ice formed. Take photos showing that the surrounding area was cleared but the spot where you fell was not. Look for any witnesses who saw the condition before you fell. Most importantly, check whether the property owner followed any local snow removal ordinances. The stronger your evidence, the better your chance of holding the owner accountable.