Agenda - 02-18-2016 - E1 - Review of Minimum Lot Size and Density Allowances for Subdivisions

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73 Watershed Orange County Density Limits — Residential State Allowances Overlay District University Lake — 1 dwelling unit for every 5 acres of property. ' Low Density Option: 1 dwelling unit for every 2 Critical acres of property.Minimum lot size for single-family Certain parcels in existence prior to October 2, residential development is 80,000 sq.ft. except in a (STATE 1989 qualify for a density bonus of a maximum of 5 cluster subdivision. Classified WS-II dwelling units for every 2 acres of property with any z Watershed Area) future development being held to the 1 unit for 5 High Density Option : Appears to be same density acre density limit. limit(s)with an allowance for more impervious surface area. University Lake — SAME AS UNIVERSITY LAKE PROTECTED Low Density Option: 1 dwelling unit for every acre Protected ABOVE of property with an impervious surface limit of 12%. (STATE High Density Option4: If new development exceeds Classified WS-II low density option, engineered stormwater controls Balance of required with development limited to either 24% to Watershed 30% impervious surface area Area)3 A maximum of 10%of the watershed outside of a Critical Area can be developed up to 70% impervious with a structural BMP. Cane Creek — 1 dwelling unit for every 5 acres of property. SAME AS UNIVERSITY LAKE CRITICAL ABOVE Critical Certain parcels in existence prior to October 19, (STATE 1999 qualify for a density bonus of a maximum of 5 Classified WS-II dwelling units for every 2 acres of property with any Watershed Area) future development being held to the 1 unit for 5 acre density limit. Cane Creek — SAME AS CANE CREEK PROTECTED ABOVE SAME AS UNIVERSITY LAKE PROTECTED Protected ABOVE (STATE Classified WS-II Watershed Area) 1 Property within the University Lake Protected and Critical Watershed Protection Overlay Districts is also located within the Rural Buffer(RB)general use zoning district. Development within this area is subject to the Joint Planning Land Use Plan and Land Use Plan Agreement between the County and the Towns of Chapel Hill and Carrboro. This Plan/Agreement establishes the density limits currently enforced by the County as detailed within this chart. There was a conscious decision made by the participating entities to keep this area at the low density option. 2 High Density option requires control of runoff from the first 1 inch of rainfall through the use of engineered stormwater controls. Local government must assume ultimate responsibility for operation and maintenance of said controls. 3'Balance of watershed area' is a term contained within State regulations referring to the area located outside of the defined critical area. 4 There was a conscious decision made as reflected in the Joint Planning Land Use Plan,Joint Planning Land Use Plan Agreement,and adopted 2030 Comprehensive Plan to keep the area within the RB zoning district at the low density development option. 5 Critical areas, under high density,are limited to 24%while protected areas are limited to 30%impervious surface.