Outdoor Lighting Rules & Approvals — Nashville & Davidson County, TN
Most residential landscape lighting across Nashville needs no special permit — but Metro's light-trespass standard, the satellite cities' own codes, lake shoreline permits, and Tennessee's electrical rules each carry real weight. Here is the map, jurisdiction by jurisdiction, with every source linked so you can read it yourself.
Davidson County is really a patchwork. Metro Nashville-Davidson governs most of it, but four small cities sit inside the county line running their own show, a state natural area sets a conservation tone in the southern hills, and just north of the river Old Hickory Lake brings a federal agency into the picture. Phil walks homeowners through this constantly, because the worry about "doing it wrong" stalls more good projects than cost ever does. The reassuring part is that the binding rules are fewer and more sensible than the patchwork suggests — and the design a good plan calls for is the same design these rules are quietly asking for.
Metro Nashville-Davidson
Do I need a permit for landscape lighting in Nashville?
For low-voltage landscape lighting on a home, Metro Nashville does not issue a standalone land-use permit — but the zoning code still sets the terms for how your light is allowed to behave, and the terms are specific, covering light trespass, shielding, and glare toward drivers.
Metro's operational performance standards provide that no illumination in excess of one-half foot-candle may cross the boundary of an adjacent residential property or the mid-line of a public street, that site lighting must be shielded so substantially all directly emitted light falls within the property line, and that no lighting may produce direct, incident, or reflected light that interferes with the safe movement of vehicles, per Metro's Title 17, Chapter 17.28 (Environmental and Operational Performance Standards), published on the Metro code library.
Read plainly, that is a light-trespass rule: keep the spill off your neighbor's yard and off the street, and shield the source so the light lands where you meant it to. It is exactly the discipline a warm, downward, glare-controlled plan follows anyway — the same thinking behind sound landscape lighting and behind the shielding principles the dark-sky lighting guide walks through in detail. If you live in the city's higher-end interior neighborhoods, the Green Hills outdoor lighting page covers the retrofit-heavy, mature-canopy side of the same work.
The Satellite Cities
What are the outdoor lighting rules in Belle Meade and Oak Hill?
This is the part of Davidson County most homeowners get wrong, because the map does not match the government. Belle Meade, Forest Hills, and Oak Hill are each a separately incorporated city sitting entirely inside the county, and each runs its own municipal code and its own review culture rather than deferring to Metro.
Their residential zoning is single-family in character, and in an enclave where restraint reads as taste, exterior appearance is taken seriously. Belle Meade and Oak Hill both operate their own municipal codes and design-review processes — Oak Hill's own code addresses dark-sky lighting directly at §14-141 — so before we install, we confirm the current provisions with the city and prepare any submittal the review calls for, rather than assuming Metro's standard carries across the city line.
In Belle Meade, that heritage-formal character shows up in the fixtures themselves: period-appropriate brass and copper, warm color, and brightness held back on purpose. In Oak Hill and its neighbor Forest Hills, the low-density estate lots and the proximity of protected land push toward the same restraint from a different direction. The practical rule is consistent across all three: shielded, ground-directed light that stays on your property and suits the architecture is what clears review and what these streets are built for.
How does Radnor Lake shape lighting in the southern hills?
A dark, undeveloped natural area at your back door sets an obvious ethic: keep the night sky dark, shield everything, and light only what needs lighting. That is a conservation-minded version of the same full-cutoff discipline the whole county's rules point toward, and it is how good lighting is designed on the estate lots under the hardwoods.
Radnor Lake State Natural Area — Tennessee's first State Natural Area, designated in 1973 — sits on 1,367 protected acres in Oak Hill, roughly eight miles south of downtown, with Forest Hills bordering it, per the Tennessee Department of Environment and Conservation.
North of the River — Hendersonville & Old Hickory Lake
What are Hendersonville's outdoor lighting rules?
Cross the river into Sumner County and the picture sharpens — Hendersonville publishes the crispest, most quotable lighting numbers in the whole area. Under its 2025 Zoning Ordinance, no light source from a commercial use may cast more than one foot-candle of illumination across the property line of an adjoining residentially zoned property.
That ordinance (Ordinance 2025-19, adopted October 28, 2025) puts outdoor lighting in Chapter 11.3, and it sets other hard thresholds too: fixtures over 150 watts must be fully shielded to prevent glare or spillover onto adjacent lots and streets, and light poles in residential districts may not exceed 16 feet in height, per the Hendersonville 2025 Zoning Ordinance. The ordinance also bars any exterior light that could interfere with the safe movement of vehicles or be confused with a traffic-control device. Those numbers turn "good practice" into something concrete: shielded fixtures, warm output, and light kept on your own side of the line.
Can I add dock lighting on Old Hickory Lake?
Usually yes, but the shoreline itself is federal, and that changes the process. Old Hickory Lake is managed by the U.S. Army Corps of Engineers, Nashville District, and new or expanded docks, boathouses, mooring, shoreline armoring, and most work below the ordinary high-water mark require Corps approval.
The Corps manages the lake under a Shoreline Management Plan approved in 2020, and roughly 36 percent of the shoreline is designated Protected Shoreline Area to keep it natural and undeveloped, per the USACE Nashville District Shoreline Management program. For a lakefront home that means dock and waterside lighting is designed twice over — once around the Corps permit for anything touching the water or federal land, and once around reflection control, so the light defines the dock and the path without smearing glare across the surface. The Hendersonville outdoor lighting page covers the waterfront design side in full.
The Tennessee Electrical Layer
Does Tennessee require a permit for the wiring itself?
Underneath every city and county rule sits one statewide layer: Tennessee requires a permit and inspection for electrical work regardless of the project's dollar amount, and the licensing tier a job falls into is set by its value, with a 25,000-dollar threshold separating a limited-licensed electrician from a full state contractor's license.
Most residential landscape lighting is low-voltage and carries a lighter footprint, but the permit rule still governs — so the correct move is always to confirm the requirement with the local permit-issuing agent. Because this layer is identical statewide, the full walkthrough of the thresholds and licenses lives on the Williamson County lighting rules page rather than being repeated here; on a Davidson project the same rules apply, and a correctly designed install handles the permit and inspection for you as part of the job.
How Gemmell Outdoor Lighting Handles Approvals
Who confirms the city code and prepares the submittals?
Phil does. When a project sits in one of the satellite cities, on the lake, or anywhere the review is unclear, he confirms the current provisions with the city or the Corps first, then prepares whatever the process wants to see: the lighting plan, fixture specifications, color temperature, shielding, and aiming intent.
It is laid out the way a reviewer reads it, because Gemmell Outdoor Lighting treats approvals as part of the design, not a hurdle bolted on at the end. That is what turns "we're worried they'll say no" into a plan that clears the first time.
The design is built to satisfy the rules before it is ever submitted: warm 2700–3000K color, full-cutoff shielding, glare kept off the property line, and materials chosen for the architecture rather than to move one dealer's brand. When you are ready, the contact page books a free evening design walk, and the service areas index shows where across Greater Nashville we work. Homeowners weighing a first system usually start with the outdoor lighting cost guide, and those converting a seasonal habit into something built-in tend to read the permanent outdoor lighting page next.
Outdoor Lighting Across the County
Area Hubs
Permanent Outdoor Lighting by Area
Lighting Repair by Area
Nashville,
Approved & Lit
Bring the address — city, satellite enclave, or lakefront. Phil confirms the approval path and prepares the submittal as part of the design.
Gemmell Outdoor Lighting — serving Greater Nashville. Notes on local approvals by Phil Gemmell.