Great question! In the student apartment industry this two week gap is known as "turn." This is a crucial time for the management because they have to inspect, clean, and prepare every single room before all the new residents move in. Some communities will allow a handful of residents to move in early or move out late, so addressing this issue with the leasing office early is ideal. In the future consider renewing you lease because not only will you not be homeless and have to worrry about packing and moving, but you can also take advantage of some great renewal specials.