Oconee County, SC Outdoor Lighting: Dark Sky Rules (2026)

Oconee County folds dark-sky protection into the design standards that come with a zoning permit. Chapter 38, Appendix A(c) opens by stating the purpose is to assure that adequate exterior lighting facilitates crime prevention, security, and safe passage, while making sure exterior lights are shielded to reduce the impact of lighting on neighboring uses, safety hazards to the traveling public, and the effect on viewsheds and nightscapes. Any project installing outdoor lighting fixtures must submit a lighting plan with its zoning permit application, prepared by a design professional licensed in South Carolina, showing the location, type, and height of every fixture, catalog data on lamps, poles, and shielding devices, and photometric data on the angle of light emission; the county will not issue the zoning permit until that plan is approved.

The operative shielding rule is short and direct: exterior lighting shall be shielded and directed to avoid illuminating the night sky. The same subsection caps every fixture's overall height at 20 feet, and separately bans blinking or flashing lights unless they're a required safety feature such as a tower beacon, along with any searchlight or laser operated for advertising or commercial purposes. On-site lighting is limited to accenting architecture and lighting walkways, entrances, and areas between buildings rather than washing entire building faces, and lighting is inspected before the county will issue a certificate of occupancy.

Because Appendix A rides on Chapter 38, these standards reach new commercial and larger residential development in the zoned areas the county council has mapped, not the unmapped Control Free District.