In expansion of the declaration of legislative intent contained in Article I, § 475-2, of this chapter and the statement of community development objectives contained in Article I, § 475-4, of this chapter, it is hereby declared to be the intent of this Article XII with respect to the O-R Office-Residence District to provide appropriate locations for office and limited commercial usage where the proliferation of unrestricted commercial development would be undesirable. Further, it is the intent of this Article XII to encourage the formation and maintenance of a quiet, compatible, and uncongested environment for business and professional offices intermingled harmoniously with dwellings and limited commercial uses; to discourage any encroachment by industrial establishments, large-scale commercial development, or other uses which might adversely affect the residential character of surrounding neighborhoods, to allow for conversion of existing dwellings to office or limited commercial use in order to encourage the preservation of sound residential structures; to give consideration to vehicular circulation and parking; and to encourage the orderly, well-planned development of offices within the district.