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Sullivan County, TN Outdoor Lighting: Dark Sky Rules (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Governing section
Zoning Resolution § 8-102.4(2)(a)
Applies to
Commercial, manufacturing districts and community facilities
Requirement
Shield fixtures so light stays on-site
Not covered
Ordinary residential lots outside these uses
Penalty
Up to $500 per day, per offense

Summary

Sullivan County's Zoning Resolution requires all site lighting in commercial and manufacturing districts, and at community facilities anywhere in the county, to be shielded so essentially all emitted light stays within the property line. The glare standard under Section 8-102.4 targets fixtures that spill light onto neighboring land or public streets.

These county ordinances apply to unincorporated areas of Sullivan County. Incorporated cities within the county may have their own rules that take precedence over county-level regulations.

1. Applicability - The standards contained within this section shall apply in all commercial and manufacturing districts and to all community facilities activities located within any district. 2. Required Performance Level a. All site lighting shall be shielded so that substantially all directly emitted light falls within the property line.

Full Breakdown

4, Glare, is one of several Performance Standards in Article VIII of the Sullivan County Zoning Resolution that regulate how a use operates once it's built, alongside noise, odor and hazardous-materials standards in the same article. The shielding rule applies in every commercial and manufacturing zoning district and to any community facility use no matter which district it sits in; it does not reach ordinary residential lots. 4(2)(a), site lighting fixtures, parking lot poles, canopy lights and similar installations must be shielded, through cutoff fixtures, shields or aiming, so that substantially all of the light they emit stays within the boundary of the lot where it's installed rather than radiating outward toward neighboring parcels or the street.

4(2)(c). 9, rather than ordered removed outright, unless it is later expanded or rebuilt. Compliance is reviewed by the Building Commissioner during site plan approval for new commercial and manufacturing development.

Violations & Fines

A lighting installation that fails the shielding standard violates the Zoning Resolution, punishable as a misdemeanor under Section 12-107.2 with a civil penalty of up to $500 per offense and each day of noncompliance counted separately. The Building Commissioner investigates complaints and can seek an injunction, mandamus action or utility-service hold to force a property into compliance.

Frequently Asked Questions

Does Sullivan County require shielded outdoor lighting?
Yes, but only for commercial and manufacturing uses and for community facilities anywhere in the county. Section 8-102.4(2)(a) of the Zoning Resolution requires site lighting to be shielded so that substantially all of the light it throws off stays within the property line instead of spilling onto neighbors or the street.
Does the shielding rule apply to residential lighting?
No. The glare standard in Section 8-102.4 applies specifically within commercial and manufacturing zoning districts and to community facility uses; the county's Zoning Resolution does not extend this shielding requirement to ordinary single-family residential lots.
What happens to lighting installed before this rule existed?
A fixture that predates the Resolution or a later amendment and doesn't meet the shielding standard is treated as a nonconforming use under Section 8-102.7, which points to Article XII, Section 12-102.9, rather than being ordered removed immediately.

Sources & Official References

Other rules in Sullivan County

All Sullivan County rules

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