The Town Board hereby finds that excessive uniformity, dissimilarity, or inappropriateness with respect to existing neighborhood character and/or context or poor quality of design in the exterior appearance of buildings erected in any area in the Town adversely affects the desirability of the immediate area and the neighboring areas for residential and business purpose or other purposes and, by so doing, impairs neighborhood character, impairs the benefits of occupancy of existing property in such areas, impairs the stability and value of both improved and unimproved real property in such areas with attendant deterioration of conditions affecting the health, safety and general welfare of the community and destroys a proper relationship between the taxable value of real property in such areas and the cost of the municipal services provided therefor. It is the purpose of this article to prevent these and other harmful effects of such exterior appearance of buildings erected or altered in any area in the Town and thus to promote the health, safety and general welfare of the community, conserve the value of buildings and encourage the most appropriate use of land with the Town.