RES - Residential Environmentally Sensitive: (a)Purpose and intent. The principal purpose of this district is to encourage preservation of open space and natural resources while providing for very low density development in coastal, island, and marsh areas.(b)General.
(1)The maximum gross density for property shall be one dwelling unit per ten gross (uplands and wetlands, but not submerged lands) acres.
(2)The maximum net density for property shall be one dwelling unit per five acres of uplands. The minimum five acres of pre-development upland acreage used to calculate net density need not be contiguous.
(3)A minimum of at least two contiguous natural pre-development upland acres of area must be present in the area utilized for the dwelling unit.(4)No land defined as jurisdictional wetlands or sovereign, submerged lands shall be eligible for DRs.
(5)No dredging or filling of wetlands or water bodies shall be allowed in order to obtain road access or increase island areas or meet the pre-development five-acre upland minimum or two contiguous acre pre-development upland minimum for an area where the dwelling will be constructed.
(6)Parcel of record.a.Notwithstanding the density and limitations above, one single-family dwelling unit shall be permitted on any parcel of record that has at least two contiguous acres of uplands in order to preserve reasonable economic use of private property.b.No re-plats, vacation of plats, or new subdivision plats or divisions of parcels of record shall be permitted unless each parcel created complies with the requirement of a minimum of ten gross acres with five acres of uplands within each parcel.c.The boundary line of parcels of record may, however, be adjusted so long as such adjustment does not increase the total number of parcels of record and so long as each resulting new parcel of record has at least two contiguous acres of upland.
(7)All development shall provide on-site retention volume equivalent to three-fourths of an inch of depth over the entire site or lot; grassed swales may be used, as long as equivalent storage is provided.
(8)Docks and walkways shall not exceed four feet in width, and be constructed in accordance with OFW and aquatic preserve regulations.
(9)All development shall provide on-site retention volume equivalent to three-fourths of an inch of depth over the entire site or lot. As an alternative, four- to six-inch-deep grass swales may be used, so long as equivalent storage is provided.
(10)Aerobic septic tanks approved by the state department of health and rehabilitative services shall be required, if allowed by the comprehensive plan.
(11)A 50-foot buffer of native vegetation shall be retained adjacent to all water bodies and wetland jurisdiction lines, within which only shoreline access structures (docks, cat walks, or piers) shall be allowed. Maintain only native and/or Florida-friendly vegetation under such pile-supported structures in the setback zone.
(12)Islands with existing dwellings may not develop additional units, or be used for transfer of development rights.(13)All site plans shall be reviewed consistent with the known archaeological resources identified on the future land use map.