My sidewalk is blocked by tree pits. I pile the snow up between the cars and cover the sidewalk to the width of the tree pit, although I am generous towards the tree pit.

Some professionals will clear every inch and throw everything into the street. First the sidewalk is nice and clear, but doesn't actually let pedestrians walk any more freely than if the piled it up against the lamp post or along the curb. In heavy storms, this clear every inch and pile it in the street prevents people leaving the building from going out into the street (our street has light traffic and is better for walking than the sidewalk all year round). Personally I think the professionals have no clue how to clear a walkway that it is good for everyone or even the people in the building they are clearing for.