Accessory buildings and uses shall not be constructed or utilized prior to construction and utilization of the principal building and use. All accessory buildings or uses, except parking areas and fences or walls, may only be located in the rear or side yard areas. Attached or detached garages may be located on a lot provided the setback from the property line along any street or other public right-of-way to the garage is a minimum of twenty (20’) feet pursuant to Section 27-27.3. This specific provision regarding garage setbacks will take precedence over any lesser setback requirement with general applicability.