Lancaster County Unincorporated

These provisions shall apply to all privately and publicly owned lands within the jurisdiction of Lancaster County and identified as areas of special flood hazard identified by the community or shown on the flood insurance rate map (FIRM) or included in the flood insurance study (FIS) that are provided to Lancaster County by FEMA.

Within any floodway area, no encroachments, including fill, new construction, substantial improvements, or other development shall be permitted unless it has been demonstrated through hydrologic and hydraulic analysis performed in accordance with standard engineering practice that the proposed encroachment will not result in any increase in flood levels within the community during the occurrence of the base flood discharge.

Until a regulatory floodway is designated, no new construction, substantial improvements, or other development (including fill) shall be permitted within the areas of special flood hazard, designated as Zones A1-30, AE, or AH on the FIRM, unless it is demonstrated that the cumulative effect of the proposed development, when combined with all other existing and anticipated development, will not increase the water surface elevation of the base flood more than one foot at any point within Lancaster County.

The Approximated Floodplain District shall be that floodplain area for which no detailed flood profiles or elevations are provided, but where a one percent annual chance floodplain boundary has been approximated. Such areas are shown as Zone A on the maps accompanying the FIS.

All new construction and substantial improvements of residential structures shall have the lowest floor, including basement, elevated to or above the flood depth specified on the FIRM, above the highest adjacent grade at least as high as the depth number specified in feet on the FIRM. If no flood depth number is specified, the lowest floor, including basement, shall be elevated no less than two feet above the highest adjacent grade.

Buildings and structures within this zone shall have the bottom of the lowest horizontal structural member of the lowest floor elevated to or above the base flood elevation plus 18 inches of freeboard, and must comply with the provisions in subsection 23-3-1.A.2 and subsections 23-4-2 and 23-4-3.

All new construction and substantial improvements in Zones V and VE, including manufactured homes, shall be elevated on pilings or columns so that: (1) The bottom of the lowest horizontal structural member of the lowest floor (excluding the pilings or columns) is elevated to or above the base flood level plus 18 inches if the lowest horizontal structural member is parallel to the direction of wave approach or elevated at least two feet above the base flood level if the lowest horizontal structural member is perpendicular to the direction of wave approach; and, (2) The pile or column foundation and structure attached thereto is anchored to resist flotation, collapse, and lateral movement due to the effects of wind and water loads acting simultaneously on all building components.

In all identified flood hazard areas where base flood elevations have been provided in the FIS or generated by a certified professional in accordance with subsection 23-3-1.A.3 the following provisions shall apply: A. Residential Construction. New construction or substantial improvement of any residential structure (including manufactured homes) in Zones A1-30, AE, AH, and A with detailed base flood elevations shall have the bottom of the lowest horizontal structural member of the lowest floor, including basement, elevated to or above the base flood level.

All proposed wireless telecommunications facilities shall be set back from abutting parcels, recorded rights-of-way and road and street lines by the greater of the following distances: A distance equal to the height of the wireless telecommunications facility or the existing setback requirements of the underlying zoning district, whichever are greater.

Reconstruction, relocation, or elimination of access points shall be required under any of the following circumstances.

Red maple - Acer rubrum; River birch - Betula nigra; Red or green ash - Fraxinus pennsylvanica; Sweet gum - Liquidambar styraciflua; Tulip tree - Liriodendron tulipifera; Black gum - Nyssa sylvatica; White oak - Quercus alba

No building exterior that is visible from any residential, agricultural, or office district, or from any public right-of-way, shall be constructed of unadorned concrete block or corrugated/sheet metal.

Private boathouse: A structure or device, floating or temporary fixed, that encloses a boat and, in so doing, increases the profile of the boat by any amount. Placement of private boathouses is prohibited.

Boat ramp, private: ... located no closer than five feet to the side property line.

Boat pier, private: A pier six feet wide or less, not to exceed one-fourth the width of its waterway, ... elevated no less than four feet above wetland substrate, with up to 400 square feet for an "L" or "T" or other structural configuration

Outdoor Shooting Range: ... on parcels of land 25 acres or greater in size.

Private heliport: ... Such parcel must be greater than four acres in size.

Sales platform, temporary, with zoning administrator's approval: ... structures shall be constructed to local building codes, shall meet all applicable Zoning Ordinance setbacks, shall not be covered, shall be less than 150 square feet in size, shall be no higher than six feet above natural grade, and shall be removed before the transfer of property.

Short-term rental, unhosted: ... Unhosted short-term rentals will require a Special Exception approved by the Board of Supervisors.

Short-term rental, hosted: ... The maximum number of rented nights shall not exceed 240 per calendar year.