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Article 7: Subdivisions Section 7.12: Flexible Developments Orange County, North Carolina – Unified Development Ordinance Page 7-51 (3) Both Primary and Secondary Conservation Open Space Areas shall be placed in undivided preserves which adjoin housing areas that have been designed more compactly to create larger conservation units that may be enjoyed by all residents of the subdivision and, if possible, enjoyed visually by the general public. Such undivided open space shall be accessible to the largest number of lots within the development. To achieve this, the majority of houselots should abut undivided open space to provide residents with direct views and access. Safe and convenient pedestrian access to the open space from all adjoining houselots shall be provided, except in the case of farmland or other resource areas vulnerable to human disturbance. The design must meet the criteria outlined in Section 7.1312.8 4 which sets forth conservation area design characteristics. (4) Where undivided open space is designated as separate non-contiguous parcels, no parcel shall consist of less than three acres in area, nor have a length-to-width ratio in excess of 4:1, except such areas that are specifically designed for neighborhood commons or greens; playfields; buffers adjacent to wetlands, watercourses, and rural roads; wildlife corridors; or trail links. (5) Each lot must contain a buildable area of sufficient size to accommodate a single-family detached dwelling and customary accessory uses, including, but not limited to, storage buildings and garages, patios and decks, lawns, driveways, septic systems including repair areas and well sites. A septic system and/or well site may be located in a secondary conservation open space areaSecondary Open Space Area provided it does not occupy more than one quarter of the secondary conservation areaSecondary Open Space Area. No septic system, repair area and/or well can be located in the primary conservation areaPrimary Open Space Area. (6) Provided the arrangement, design, and shape of cluster lots is such that lots provide satisfactory and desirable sites for building, and contribute to the preservation of designated Primary and/or Secondary Conservation Open Space Areas, minimum lot area, lot width, and setback requirements as specified in Article 3 of this Ordinance may be reduced as set forth below. (a) For Major Subdivisions, the mMinimum lot area requirements may be reduced by 65% of the minimum lot size permitted by the zoning district including any overlay district requirements; however, minimum lot area may not be smaller than 40,000 square feet within a watershed protection overlay district where lots are served by individual septic systems. (a)(b) For Minor Subdivisions utilizing this option, the minimum amount of open space may increase beyond amount per UDO 7.12.4 (A) (2). (b)(c) Minimum lot width requirements may be reduced to 100 feet in the AR and R1 Districts. Minimum lot width requirements may be reduced by 30% in all other zoning districts. (c) Minimum front, rear, and side setback requirements may be reduced by 25% but shall be no less than ten feet. (d) Minimum lot frontage requirements may be reduced to 20 feet for lots fronting on culs-de-sac and “T” turnarounds. (e) Minimum spacing between building envelopes and the subdivision boundary or off-site public street right-of-way shall be 100 feet and may be counted as open space. (7) Conservation-clusterConservation Cluster subdivision road(s) shall be designed to provide internal access to all lots in the subdivision. Private driveways shall access existing state maintained roads only via subdivision roads providing internal access to lots in the subdivision. 202