Cleared area is only the starting point.
The size of the parking lot matters, but layout changes the work too. Narrow access lanes, multiple entrances, tight turning areas, parked vehicles and loading docks can affect how a site is cleared. Share the area that actually requires service, not only the total size of the parcel.
Sidewalks, steps and pedestrian crossings should be identified separately. A proposal for parking lot plowing alone should not be compared directly with one that includes building approaches and common walkways. Ask each contractor to identify the same surfaces.
