The municipal legislative body finds that excessive uniformity, dissimilarity, inappropriateness or poor quality of the design and location of buildings and appurtenant structures, including signs, adversely affects the desirability of the immediate and neighboring areas and thereby impairs the benefits of occupancy of existing property and the stability and value of both improved and unimproved real property in such areas, prevents the most appropriate development of such areas, produces degeneration of property and destroys the proper relationship between the taxable value of real property in such areas and the cost of municipal services provided therefor. It is the intent of this Article to establish procedures and design criteria necessary to avoid such results and to preserve and enhance the character, historical interest, beauty and general welfare of the municipality and to ensure that the location and design of buildings, structures and open spaces in the municipality shall aid in creating a balanced and harmonious composition of the whole as well as in the relationship of its several parts.