Requirements for development plan review may be waived where there is a change in use or occupancy, and no extensive construction of improvements is sought. The waiver may be granted by a decision by the administrative officer or by the Planning Board following a referral from the administrative officer after a finding that the use will not affect existing drainage, circulation, relationship of buildings to each other, landscaping, buffering, lighting and other considerations of development plan review, and that the proposed change in use or occupancy will not require upgraded or additional site improvements.