From Howard County Government
“The owner of property abutting a sidewalk in a public right-of-way is responsible for removing snow from the sidewalk within 48 hours after the snow has fallen. In the event of a multi-unit building with more than one occupant, it shall be the duty of the lessor to remove the snow unless the lessor has obligated a tenant who is actually occupying the property to do so. (Howard County Code, Section 18.402(h). This applies to public streets and is applicable to sidewalks adjacent to public property“