Dorchester County limits how much of a lot may be built on or paved through district standards in Ordinance 04-13, and Lowcountry stormwater rules add impervious-surface limits to protect the Ashley River and flood-prone ground.
Dorchester County controls lot coverage two ways. Zoning Ordinance 04-13 sets density and dimensional standards by district that cap the building footprint, and the county's stormwater and land-development rules limit impervious surface on new construction. This matters in the Lowcountry, where flat terrain, wetlands, and tidal drainage near the Ashley River make runoff a real concern. Coverage counts the house, accessory buildings, driveways, and patios. Highly paved lots trigger stormwater detention and water-quality review. Exceeding a district's standard requires a variance. Summerville applies its own coverage and stormwater rules inside town limits.
Building or paving past the district or stormwater standard fails site-plan review. Enforcement includes permit denial, stop-work orders, and required removal of excess impervious area or added drainage controls.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
Dorchester County, SC
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See how Dorchester County's lot coverage limits rules stack up against other locations.
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