Simpsonville, SC Outdoor Lighting: Dark Sky Rules (2026)
Key Facts
- Governing rule
- Zoning Ord. Section 4.8
- Full cut-off required
- Fixtures over 100 watts
- Max color temperature
- 3000K max (Zoning Sec. 4.8.3.I)
- Single-family homes
- Exempt (Sec. 4.8.2)
- Holiday lighting
- Exempt
Summary
Simpsonville's Zoning Ordinance includes dark-sky-style lighting standards (Section 4.8) intended to minimize light pollution and sky glow. Fixtures must be shielded or recessed, lights over 100 watts must be full cut-off, and color temperature may not exceed 3000K. Single-family homes and holiday displays are exempt.
Light sources shall be shielded or recessed within opaque housing... Each light fixture in excess of 100 watts or equivalent shall meet ISENA definition of full cut-off fixtures or hoods to prevent glare or spillover onto adjacent lands and streets and into the sky.
Full Breakdown
Section 4.8.1 states the intent to minimize light pollution, preserve nighttime quality by curbing 'sky glow,' and reduce light trespass. Standards in 4.8.3 require light sources to be shielded or recessed within opaque housing; each fixture over 100 watts (or equivalent) must meet the IESNA definition of full cut-off to prevent glare, spillover, and uplight into the sky. Color temperature must not exceed 3000K at the source (Sec. 4.8.3.I). Fixtures must be aimed so the light source or cone of light is not directed at or beyond a property line, and support poles cannot exceed 30 feet and must be set back 5 feet from property lines.
Violations & Fines
Non-compliant lighting on regulated (non-residential) development is a zoning violation; the City may withhold permits or certificates of occupancy until the photometric plan complies. Penalties follow Code section 1-9.
Frequently Asked Questions
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Sources & Official References
Other rules in Simpsonville
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