2 rules for unincorporated Horry County, South Carolina.
Verified from official government sources
Horry County has no dedicated dark-sky or sea-turtle lighting ordinance, but Zoning Ordinance Section 410 requires brighter fixtures to be full-cutoff or shielded so light is not aimed skyward, onto roadways, or into neighbors' windows. Grand Strand residents are also urged to keep beachfront lights out during turtle season.
Horry County Zoning Ord. Sec. 410 (Light and glare)
Light fixtures in excess of one hundred (100) watts or two hundred (200) lumens shall be full-cutoff or directionally shielded and shall be aimed and controlled so that light ... does not project into the windows of neighboring residences, adjacent uses, past the object being illuminated, skyward, or onto a public roadway.
Horry County Zoning Ordinance Section 410 caps light spillover: no activity may cause illumination exceeding one (1) footcandle across any residential lot line in a residential district. Lighting that substantially interferes with a neighbor's use of their property is prohibited.
Horry County Zoning Ord. Sec. 410 (Light and glare)
In all districts, any operation or activity which produces light or glare, except for cars, trucks, and other vehicles traveling on highways, streets, or railways, shall not cause illumination in excess of one (1) footcandle across any residential lot line in any residential district.
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