There should be a balanced and harmonious relationship among the structures on the site, between the structures and the site itself, and between the structures and those on adjoining properties. All new buildings or additions constructed on sloping land should be designed to relate to the natural land forms and step with the slope in order to minimize the building mass and bulk and to integrate the structure with the site. (Ord. 90-5 § 2, 1990; Ord. 181 NS § 1, 1972; prior code § 25-12(c).)