Laurens County, SC Building Setbacks & Zoning: Lot Coverage Limits (2026)

Table 10.A.6 of Laurens County Code § 33-91, adopted as part of the Residential Subdivisions Ordinance by Ordinance No. 926 on October 11, 2022, governs conventional single-family detached subdivisions in the unincorporated county. The table sets a maximum impervious surface of 50 percent of gross acreage across all three water and sewer service categories the ordinance recognizes: lots with public water and sewer, lots with public water and a septic tank, and lots with well water and a septic tank. Section 33-4 defines impervious surface as any surface that substantially reduces or prevents the infiltration of stormwater, including buildings, roofs, concrete, asphalt, and other paved surfaces that do not use porous materials, so driveways, patios, and roof footprints all count toward the 50 percent ceiling along with the house itself.

Section 33-91 pairs the impervious cap with a maximum density note stating that a lot's achievable density depends on its buildable area after required buffers and this impervious limit are applied, meaning a developer cannot assume the minimum lot area alone guarantees a buildable house pad; the 50 percent figure, not the lot's raw acreage, sets the binding constraint once buffers are subtracted. The same 50 percent ceiling reappears in Table 11.A.4 for multi-family townhome, duplex, and apartment development, and a higher 60 percent ceiling applies instead to Open Space Residential Development under Table 12.C.5, reflecting that clustered layouts trade lot coverage for dedicated open space elsewhere on the tract.