All buildings within a luxury apartment development shall be totally covered by a true and complete gable, hip, gambrel or mansard roof, provided, however, that where roof mounted equipment is proposed for the operation of the building, a facade roof treatment exhibiting the appearance of such pitched roofs may be permitted and approved by the Planning Board during site plan review. However, regardless of the style of the roof treatment, the elevation of the building shall have a roof height extending above the building wall equivalent to at least one-quarter (i.e., twenty-five (25%) percent) of the total height of the building, and this measurement of roof height shall not include any eave projecting below the building wall.