Environmental Rules in North Charleston, SC (2026)
4 verified environmental rules for North Charleston, South Carolina, sourced directly from the municipal code and official government pages.
Verified from official government sources
Stormwater Management
New subdivision lots 200 feet deep or less must drain to an approved swale, ditch or gutter at a minimum eight-tenths of one percent slope so water doesn't pool.
North Charleston Lot Drainage Standard
Some RestrictionsNorth Charleston Code of Ordinances § 18-54(f)
All lots not exceeding two hundred (200) feet in depth shall be provided with means for positive drainage and shall have a slope of not less than eight-tenths of one per cent (0.8 of 1%) to an approved swale, ditch, gutter or other type of approved drainage facility. Larger tracts of land shall be properly drained.(g)Fire hydrants. In all subdivisions of over five (5) lots, fire hydrants shall ...
Erosion Control
A grading or land-disturbing permit is required before excavation begins, and the application must meet South Carolina's Stormwater Management and Sediment Reduction Regulations, adopted into city code by reference.
North Charleston Grading Permit Requirements
Some RestrictionsNorth Charleston Code of Ordinances, Appendix A (Zoning Regulations) § 7-2.2
Requirements for a grading permit are contained in the South Carolina Stormwater Management and Sediment Reduction Regulations and are hereby adopted by reference.
Flood Zones
North Charleston requires a development permit before any construction, land alteration, or structural change in FEMA-mapped special flood hazard areas, under Sec. 5-406, which adopts the city's current flood insurance study maps and applies to every zone they cover.
North Charleston Floodplain Development Rules
Significant RestrictionsNorth Charleston Code of Ordinances § 5-406(a)-(c)
(a)Lands to which this chapter applies. This chapter shall apply to all areas of special flood hazard within the jurisdiction of North Charleston as identified by the Federal Emergency Management Agency (FEMA) in its flood insurance study(ies), dated on or after January 29, 2021 with accompanying maps and other supporting data, all of which are hereby adopted by reference and declared to be a p...
Flood Elevation Requirements
New and substantially improved homes in North Charleston's mapped flood zones must have their lowest floor built at least 2 feet above the base flood elevation under Sec. 5-409(b)(1), a freeboard margin that also bars basements outright.
North Charleston Base Flood Elevation Rule
Significant RestrictionsNorth Charleston Code of Ordinances § 5-409(b)(1)
(1)Residential construction. New construction and substantial improvement of any residential structure (including manufactured homes) shall have the lowest floor elevated no lower than two (2) feet above the base flood elevation. No basements are permitted. Should solid foundation perimeter walls be used to elevate a structure, flood openings sufficient to automatically equalize hydrostatic flo...
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County ordinances apply to unincorporated areas and may supplement North Charleston city rules.
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