Furniture assembly in Vaughan often happens in rooms taller than the furniture. Woodbridge and Maple houses from the last twenty years have nine and ten-foot main floors, so a standard bookcase or wardrobe leaves a band of bare wall floating above it.
That is fixable with extension units, a taller frame, or a run built in two heights that reads as one piece. I plan the layout with you before the first screw goes in, then level the run, anchor it back to the wall and clear away the packaging.