Rock Hill, SC Building Setbacks & Zoning: Structure Height Limits (2026)

5(A) defines building height as 'the vertical distance measured from the established grade at the corner of a front of a building to' the roof's highest point for a flat roof, the deck line for a flat mansard or Bermuda roof, or the mean height level between eaves and ridge for gable, hip, cone, gambrel and shed roofs, with established grade meaning the finished grade after grading or excavation. 1 sets the SF-3 district's primary-structure height cap at 35 feet for single-family detached homes. 5(B) then lists narrow allowances above that base: clerestories, chimneys and elevator shaft enclosures may extend up to one additional story over the roofline; steeples, spires and belfries may extend up to twice the height of the principal building; cupolas, clerestories, skylights, water tanks and ventilators may extend up to 10% of the building height; and parapets may exceed the limit by up to 10 feet or 30% of the building height, whichever is less, so long as none of these features are intended for human occupancy or exceed FAA height limits.

For industrial uses, the Planning Commission can allow additional height up to 100 feet if the added height is necessitated by a specific site or building function and the structure is set back at least one foot per foot of height, doubling to two feet per foot where the site adjoins a residential district.