Yes, whoever has control of a building, whether it is the owner, a lessee, a tenant, or another occupant of the building, generally has four hours after the snow stops falling to remove snow and ice. If they cannot remove the ice without damaging the sidewalk, the person in control must put ice melt, sand, or another medium to prevent people from slipping on the ice. This rule does not apply to nighttime hours. If you injure yourself by slipping on ice, you may have a claim if the person in control did not abide by the New York City Administrative Code.