Outdoor Lighting in Tennessee (2026)
35 rules on the books across Tennessee, 15 cities and counties. Select a rule to read the full details.
Severity: Few Restrictions · Light Restrictions · Some Restrictions · Significant Restrictions · Heavy Restrictions
Dark Sky Rules
Ordinances designed to reduce light pollution, including requirements for shielded fixtures, limits on brightness, and curfews for decorative lighting.
Chattanooga
Some RestrictionsChattanooga's Exterior Lighting Controls cap outdoor light spilling onto neighboring lots. Sec. 38-47(b) sets a maximum…
Read full rule →Franklin
Some RestrictionsFranklin's 2026 Zoning Ordinance requires exterior lighting to be shielded and aimed downward, bans fixtures relying…
Read full rule →Hendersonville
Some RestrictionsNon-residential light poles and building-mounted fixtures in Hendersonville must use fully shielded luminaires, capped…
Read full rule →Knox County
Some RestrictionsKnox County has no formal dark-sky ordinance, but its Zoning Ordinance requires outdoor lighting for parking, storage…
Read full rule →Knoxville
Some RestrictionsKnoxville, Tennessee (Knox County) requires all new or altered outdoor light fixtures on nonresidential, multifamily…
Read full rule →Memphis
Some RestrictionsCommercial, multi-family and mixed-use sites across Memphis and unincorporated Shelby County must curtail light…
Read full rule →Murfreesboro
Some RestrictionsMurfreesboro's zoning ordinance caps site lighting at a 35-degree shielded cutoff, limits spillover to half a…
Read full rule →Nashville
Some RestrictionsMetro Nashville requires full cutoff outdoor light fixtures and lets commercial developers meet International Dark-Sky…
Read full rule →Rutherford County
Some RestrictionsRutherford County has no formal dark-sky ordinance, but its zoning performance standards require all site lighting to…
Read full rule →Shelby County
Some RestrictionsIn unincorporated Shelby County, the Unified Development Code (UDC 4.7) sets outdoor site-lighting standards to curtail…
Read full rule →Sullivan County
Some RestrictionsSullivan County's Zoning Resolution requires all site lighting in commercial and manufacturing districts, and at…
Read full rule →Sumner County
Some RestrictionsTennessee has no dark-sky statute, but Sumner County's Zoning Resolution (Section 1107) limits glare to 0.5…
Read full rule →Williamson County
Some RestrictionsNon-residential development in unincorporated Williamson County must aim outdoor light fixtures downward and shield…
Read full rule →Clarksville
Few RestrictionsClarksville has adopted no dark-sky or night-sky ordinance, no lumen caps, and no color-temperature limits. The one…
Read full rule →Light Trespass & Shielding
Rules preventing outdoor lights from shining onto neighboring homes, shielding and full-cutoff fixture requirements, aiming standards, and footcandle caps at the property line.
Chattanooga
Some RestrictionsSecurity lighting in Chattanooga must meet the one-footcandle, full-cutoff standard unless it runs on a motion vacancy…
Read full rule →Franklin
Some RestrictionsFranklin's zoning code caps light spill: fixtures must minimize glare on neighbors, stay within a 35-degree beam angle…
Read full rule →Hendersonville
Some RestrictionsHendersonville caps light spilling from a commercial property onto a neighboring residential lot at one foot-candle…
Read full rule →Knox County
Some RestrictionsKnox County's zoning ordinance requires outdoor lighting used for parking lots, outdoor storage, product display or…
Read full rule →Knoxville
Some RestrictionsKnoxville caps nonresidential and multi-family outdoor lighting at one footcandle at any lot line and requires shielded…
Read full rule →Memphis
Some RestrictionsMemphis and unincorporated Shelby County require non-residential and multi-family site lighting to stay off neighboring…
Read full rule →Murfreesboro
Some RestrictionsMurfreesboro's zoning code caps outdoor lighting spillover: fixtures must be shielded, angled no more than 35 degrees…
Read full rule →Nashville
Some RestrictionsMetro Nashville requires all outdoor lighting, including residential security floodlights, to be full cutoff and…
Read full rule →Rutherford County
Some RestrictionsThe Rutherford County Zoning Ordinance defines light trespass as light from an outdoor luminaire that shines beyond the…
Read full rule →Shelby County
Some RestrictionsIn unincorporated Shelby County, the Unified Development Code (UDC 4.7) requires regulated outdoor lighting to minimize…
Read full rule →Sullivan County
Some RestrictionsSullivan County caps how much light from a commercial or manufacturing use can reach next-door residential land at four…
Read full rule →Sumner County
Some RestrictionsSumner County's Zoning Resolution requires all site lighting to be shielded so directly emitted light stays within the…
Read full rule →Williamson County
Some RestrictionsExterior lighting on covered development in unincorporated Williamson County cannot shine directly into a neighbor's…
Read full rule →Clarksville
Few RestrictionsClarksville's no-spillover language is real but narrow. Zoning Ordinance 5.10 exempts single-family and two-family…
Read full rule →Billboard Lighting
Lighting standards for outdoor advertising, luminance limits, dwell time, sky-glow mitigation, and curfew hours after which billboards must dim or shut off.
Knoxville
Heavy RestrictionsKnoxville's zoning code outlaws new billboards outright: Section 13.2.H of Appendix B lists 'billboards and other…
Read full rule →Chattanooga
Some RestrictionsChattanooga requires off-premise billboard lighting to use shielded, directional luminaries capped at two watts per…
Read full rule →Hamilton County
Some RestrictionsOff-premise billboards in unincorporated Hamilton County may use only stationary illumination. Zoning Regulations Art…
Read full rule →Memphis
Some RestrictionsDigital billboards and electronic message boards in Memphis must run ambient light monitors that automatically dim the…
Read full rule →Murfreesboro
Some RestrictionsMurfreesboro's sign code bars any illuminated sign, including off-site billboards, from casting direct glare into…
Read full rule →Nashville
Some RestrictionsMetro Nashville caps billboard brightness at 200 foot-lamberts for internally lit signs or 75 footcandles for indirect…
Read full rule →Rutherford County
Some RestrictionsOff-premise billboards along I-24 in unincorporated Rutherford County must use external lighting only, with no internal…
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