ARTICLE 3 ZONING DISTRICTS DIVISION 1. ESTABLISHMENT, PURPOSE AND BOUNDARIES OF ZONE DISTRICTS, AND INTERPRETATION THEREOF Sec. 46-91. Establishment . The following zone districts are hereby established in the City of Laurens: PRIMARY ZONE DISTRICTS R-1, Rural residential and agricultural district R-2, Suburban residential district R-3, Urban residential district RM, Residential manufactured/site-built housing district RP, Residential-professional district B-1, Neighborhood convenience center district B-2, Central business district B-3, Highway service center district B-4, General commercial and distribution district M, Manufacturing district SPECIAL PURPOSE DISTRICTS PUD, Planned unit development district FHO, Flood Hazard Overlay district HPO, Historic Preservation Overlay district Sec. 46-92. Purpose. Collectively, these districts are intended to advance the purpose of this chapter, as stated in section 46-3. Individually, each district is designed and intended to accomplish the following more specific objectives: PRIMARY DISTRICTS R-1, Rural residential and agricultural district. The purpose of the R-1 district is to maintain and protect open spaces and natural resources, and to permit agricultural operations in certain areas of the city, together with low-density residential development and support uses. R-2, Suburban residential district. The purpose of the R-2 district is to foster, preserve and protect areas of the community in which the principal use of land is for detached, single-family dwellings and related support facilities. R-3, Urban residential district. The purpose of the R-3 district is to accommodate higher density residential development and a variety of housing types on small lots or in project settings. RM, Residential manufactured/site built housing district. The purpose of the RM district is to accommodate manufactured home development in concert with site-built single-family housing and duplexes, or in planned parks or courts. It is further intended to foster manufactured home development as an economic alternative to conventional site-built housing. RP, Residential-professional district. The purpose of the RP district is to accommodate office, institutional and residential uses in areas whose character is neither exclusively business nor residential in nature. It is designed principally for areas in transition from residential to business, along major streets and for the purpose of ameliorating the consequences of change impacting established residential areas. B-1, Neighborhood convenience center district. The purpose of the B-1 district is to meet the commercial and service needs generated by nearby residential areas. Goods and services normally available in the B-1 district are of the convenience variety. The size of any such B-1 district should relate to surrounding residential markets and the locations should be at or near major intersections. B-2, Central business district. The purpose of the B-2 district is to promote the concentration and vitality of commercial and business uses in downtown Laurens. This B-2 district is characterized by wall-to-wall development and pedestrian walkways. B-3, Highway service center district. The purposes of this B-3 district are to serve the automobile and its passengers, to accommodate change of existing land uses precipitated by economics and major street use, and to provide services and goods outside the central business district. For these reasons, open space, off-street parking and building setbacks are prerequisite to new construction. B-4, General commercial and distribution district. The purpose of the B-4 district is to provide for the development and maintenance of commercial and distribution facilities requiring relatively large sites and buildings, outdoor storage and display area. M, Manufacturing district. The purpose of the M district is to accommodate wholesaling, distribution, storage, processing and manufacturing in an environment suited to such uses and operations while promoting land use compatibility both within and beyond the boundaries of such districts. Toward these ends, residential development is not permitted, nor is the establishment of this district on other than a collector or arterial street. SPECIAL PURPOSE DISTRICTS PUD, Planned unit development district. The intent of the planned unit development district is to encourage flexibility in the development of land in order to promote its most appropriate use; and to do so in a manner that will enhance the public health, safety, morals and general welfare. Within the PUD zones, regulations adapted to such unified planning and development are intended to accomplish the purposes of zoning and other applicable regulations to an equivalent or higher degree than where such regulations are designed to control unscheduled development on individual lots, to promote economical and efficient land use, provide an improved level of amenities, foster a harmonious variety of uses, encourage creative design, and promote a better environment. In view of the substantial public advantage of planned unit development, it is the intent of this chapter to promote and encourage or require development in this form where appropriate in location, character and timing.