Aiken County, SC Building Setbacks & Zoning: Setback Rules (2026)

Aiken County Code Section 24-2.5(a) states that "Table 2 establishes lot area, yard, setback, height, density, and impervious surface requirements for all uses, by zone district," and the table spells out separate front, side, and rear minimums for each of the county's primary zoning districts. Front setbacks scale with street classification: 50 feet from an arterial street, 40 feet from a collector street, and 30 feet from a local street apply uniformly across the RC, RD, RM, RH5, OR, NC, UD, LD, RUC, HCO, RH5B, and RRC Districts. The Industrial (IND) District requires a deeper 100-foot arterial setback, 75 feet from a collector, and 50 feet from a local street, reflecting the heavier truck traffic and larger buildings typical of that district. The Rural District (RUD) carries a split standard under the table's asterisk note, reading "100' industrial only; 50' other uses," so a non-industrial RUD use only needs the lower figure.

Side setbacks for residential uses hold at 10 feet in most districts but drop to 5 feet in the UD, LD, and IND Districts, where lots run smaller and more compact. Rear setbacks for residential uses are a flat 20 feet across every district shown in the table, from RC through AP. Non-residential side and rear setbacks are generally larger, running from 10 to 40 feet depending on the district, because Table 2 applies stricter separation where commercial or industrial uses sit next to homes. A 50-foot buffer setback also applies along the banks of any water body, stream, or river under Table 2 note (E), regardless of the base district setback.