The C-3 Office Commercial District is intended as a primary office district of the community for the conduct of general business. It is the objective to provide in this district sufficient space in appropriate locations for the transaction of all types of administrative and miscellaneous service activities in beneficial relationship to one another and thus strengthen the economic base of the community; to provide appropriate space, including sufficient ground area, permissible height and bulk of buildings, including room for off-street parking facilities to satisfy the needs of modern office-commercial development; and to encourage the tendency of office-commercial development to concentrate to the mutual advantage of both consumer and merchant, thus to promote public convenience, prosperity and welfare. Land in this district is intended for concentrated office-commercial development, which is not properly associated with, nor compatible with, residential and neighborhood commercial and service establishments. Therefore, residential, industrial or manufacturing uses (except when incidental to the business) are prohibited as well as any other use which would substantially interfere with the development or continuation of the office-commercial structures and uses in the district.