Building Permits in York County, SC

SC, a small accessory concrete slab (walkway, patio pad, small equipment pad) of 200 square feet or less at grade is exempt from a building permit. Larger slabs that will support a future structure or are part of a building foundation fall under the building permit. Impervious surface counts toward zoning lot-coverage limits.

SC, a freestanding deck not more than 30 inches above grade and not more than 200 square feet is exempt from a building permit under 2021 IRC R105.2. County zoning setbacks still apply. If the parcel is inside the Town of Fort Mill (verify via 803-547-2034), use the town building department instead. Lake Wylie waterfront parcels: Duke Energy Lake Services permit may apply if any portion crosses the regulated shoreline.

SC, fences 7 feet or less are exempt from a state building permit under 2021 IRC R105.2. County zoning regulates fence height, material, and setback; HOA covenants in many Lake Wylie subdivisions further restrict materials and color. Lakefront fences extending toward the regulated shoreline may need Duke Energy review.

SC, an at-grade uncovered concrete or paver patio is exempt from a building permit. Adding a cover, roof, or screen enclosure turns the covered area into an accessory structure requiring a building permit. Impervious surface coverage counts toward zoning lot-coverage limits.

SC, a retaining wall 4 feet or less measured from bottom of footing to top of wall, without surcharge, is exempt from a building permit under 2021 IRC R105.2. Drainage and erosion control remain the owner's responsibility. Walls within Duke Energy's Lake Wylie regulated zone require Duke Energy permit regardless of height.