Outdoor Lighting Rules, HOA & Historic Approvals — Williamson County, TN
Most residential landscape lighting in Williamson County needs no special land-use permit — but three real approval layers sit underneath it: Franklin's historic district requires a Certificate of Appropriateness, HOAs and architectural review boards govern exterior changes, and Tennessee requires a permit for the electrical work itself. Here is the map, jurisdiction by jurisdiction.
This is the informational companion to the commercial Williamson County outdoor lighting page. That page is about the work; this one is about what the local rules actually say — drawn from the published city, town, and state sources, with each one linked so you can read it yourself. Phil walks homeowners through this constantly, because the fear of "getting it wrong with the HOA" stops more good lighting projects than cost does. The honest headline: the rules are more navigable than they sound, and most of the friction disappears once you know which office actually has a say.
Franklin
Do I need a permit for landscape lighting in Franklin?
For low-voltage landscape lighting, Franklin does not issue a standalone land-use permit — but the city's zoning ordinance does set standards for how outdoor light behaves. Warm, downward, glare-controlled lighting is exactly what the code wants, which is the way a good landscape lighting plan should be drawn anyway.
Illumination must be shielded so that no direct glare can be seen from any angle, and building-mounted fixtures must be ornamental sconces, cutoff fixtures, or fixtures screened by the architecture; floodlights and spotlights have to be aimed and shielded so the light falls only on the intended surface, per the City of Franklin Zoning Ordinance. The ordinance also prohibits ornamental fixtures that rely on a prismatic glass or plastic globe as their only shielding.
Does historic-district approval cover exterior lighting?
This is the fact most Franklin homeowners miss. Inside a Franklin local historic district, exterior lighting is a reviewable site element that generally requires a Certificate of Appropriateness (COA) from the Historic Zoning Commission — the same review that covers fences, walkways, driveways, and parking areas, per the City of Franklin Certificate of Appropriateness process.
Minor changes that don't substantially affect the exterior appearance may be issued an administrative COA at the Preservation Planner's discretion; anything larger goes to the full commission, which reviews against the adopted Historic District Design Guidelines, the zoning ordinance, and the Secretary of the Interior's Standards. Period-appropriate fixtures — brass and copper, warm color, restrained brightness — are what clears this review, and Gemmell Outdoor Lighting prepares the COA submittal so the plan is approved the first time. If your address is downtown or in one of the overlay districts, start here before you buy a single fixture; the Franklin outdoor lighting page covers the design side.
Brentwood
What does Brentwood require for outdoor lighting glare?
Brentwood's zoning code frames its lighting rule as protection for the neighbors. Outside lighting must be arranged to minimize glare and reflection on adjacent residential properties and public streets, per the Brentwood Code of Ordinances (Chapter 78, Zoning). The practical answer is shielded, full-cutoff fixtures aimed at the ground and the architecture.
Where the code sets a hard number, it does so at the property line: in the cited commercial districts that exist to buffer nearby homes, the Planning Commission may require a lighting plan showing illumination does not exceed three footcandles measured at the property line of abutting residentially zoned property, per the city's published code. For a typical Brentwood estate lot the takeaway is simpler than the ordinance language: fixtures that don't spill across the property line satisfy both the letter of the rule and the long-sightline aesthetic these homes are built for. That is the same discipline behind good architectural lighting, and it is how the Brentwood outdoor lighting work is designed.
Thompson's Station & Nolensville
Is there an outdoor lighting ordinance in Thompson's Station or Nolensville?
Not that we could find. As of July 2026, no specific residential exterior-lighting or glare ordinance was located in the reachable official sources for either town. Both towns should still be confirmed against their full ordinances before anyone asserts a rule exists.
That finding saves you a phone call. Thompson's Station governs development through a Land Development Ordinance adopted in 2015, and Nolensville through a Zoning Ordinance approved in 2023 — but neither surfaced a standalone residential lighting standard in its published code.
What that means practically for a homeowner in Tollgate Village, Avalon, Benington, Burkitt Place, or the newer master-planned pockets: the binding approval layer usually isn't the town at all — it is your community's HOA or Architectural Review Board, sitting on top of the statewide electrical-permit rule covered below. These are exactly the neighborhoods where a builder's flood package gets swapped for a designed system, so the permanent outdoor lighting conversation and the ARB submittal tend to happen together.
Fairview
How does Fairview handle outdoor lighting and glare?
Fairview addresses lighting mostly through buffers and neighbor privacy rather than a dedicated residential-fixture ordinance. The city's zoning references exterior lighting under Article XIV, with buffers intended to mitigate undesired views, noise, and glare, and with lighting directed onto buildings discouraged unless it illuminates identification signage on the façade, per the Fairview Zoning Ordinance and its Design Review Manual.
On Fairview's larger acreage and equine properties, that "discouraged building-flood" guidance lines up with what the site wants anyway: security and definition without a wall of glare thrown at the house or the road. Full-cutoff, ground-directed fixtures and careful driveway spacing do the job — the approach behind the Fairview outdoor lighting and Leipers Fork work on the county's rural western edge.
Spring Hill
Where are Spring Hill's exterior lighting standards?
Spring Hill keeps its on-site development standards — exterior lighting among them — in Article 9 of its Unified Development Code (UDC). The article's existence is confirmed by the city's official documents, per the Spring Hill UDC User's Manual, which is the right place to read the specific residential provisions before you plan a system.
Spring Hill is a high-growth corridor of large new lots and first-time lighting buyers, which usually means two things run in parallel: the UDC's site standards, and the subdivision's own architectural guidelines. Gemmell Outdoor Lighting checks both at the design stage rather than after fixtures are on the ground.
The Tennessee Electrical Layer
What does Tennessee require for the electrical work?
This layer applies everywhere in the county, regardless of what your city or HOA says, and it is worth stating precisely — as a description of what Tennessee law requires of electrical work generally, never as a claim about any single contractor's licensure. Three things are true across the state:
- Permits and inspections are required for all electrical work regardless of the dollar amount, obtained from the local permit-issuing agent, per the Tennessee Division of Fire Prevention electrical FAQ.
- A Limited Licensed Electrician (LLE) covers electrical work under 25,000 dollars per project (the project can't be split to duck the cap), per the Tennessee electrical licensing rules.
- At 25,000 dollars or more, a state Contractor's license with the electrical classification — comparable to a Master Electrician — is required before contracting, per the Tennessee Board for Licensing Contractors.
Most residential landscape lighting is low-voltage (12V), and the state's electrical FAQ notes that low-voltage work carries a lighter licensing footprint — but the "permit regardless of dollar amount" rule above still governs, so the correct move is always to confirm the specific requirement with the local permit-issuing agent for your address. One more piece of local context, informational only: Middle Tennessee Electric is the electric cooperative serving much of the county, including Franklin and Brentwood, per Middle Tennessee Electric. When a system is designed and installed correctly, this whole layer is handled for you as part of the job.
The HOA & Architectural Review Layer
Do HOA rules affect outdoor lighting in Williamson County?
Usually, yes. For a large share of the county's homeowners, this is the layer that matters most in day-to-day practice. Most master-planned communities in Williamson County require Architectural Review Committee or Board sign-off before exterior modifications, which can include exterior and landscape lighting.
So read your own covenants first, because the requirement lives there rather than in a city ordinance.
One community is documented from its own first-party source: in Westhaven (Franklin), exterior modifications require Architectural Review Committee approval, per the Westhaven homeowners' Architectural Changes resource. For other communities — Tollgate Village, Avalon, Benington, Burkitt Place, and the rest — the safe, honest framing is generic: if your community has an HOA or ARB, exterior lighting may require approval, and you should confirm it against your governing documents before you commit to a design.
A well-documented, architecturally appropriate submission is rarely the thing that gets denied. What gets denied is a surprise — a change the board learns about after the fact, or a proposal with no drawings and no fixture spec. Gemmell Outdoor Lighting's answer to that is procedural, covered next.
How Gemmell Outdoor Lighting Handles Approvals
Who prepares the HOA and historic-district submittals?
Phil prepares them. When a project sits inside Franklin's historic district or a community with an architectural review board, he puts together the submittal package: the lighting plan, the fixture specifications, the color temperature and shielding details, and the aiming intent, presented the way a reviewer needs to see it.
Gemmell Outdoor Lighting treats approvals as part of the design, not an afterthought. That is what turns "we're worried the HOA will say no" into a plan that clears review the first time.
The design itself is built to satisfy the rules before it is ever submitted — warm 2700–3000K color, full-cutoff shielding, glare kept off the property line, brass or copper where the architecture calls for it. Because Gemmell Outdoor Lighting is brand-agnostic, the fixtures are chosen for the property and the review board rather than to move a single dealer line. 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 often start with the outdoor lighting cost guide and the dark-sky lighting guide, which explains the shielding principles the county's glare rules are really asking for. Homeowners planning garden and tree lighting on a wooded Brentwood lot can start with our Brentwood landscape lighting page.
Outdoor Lighting Across the County
Permanent Outdoor Lighting by Area
Lighting Repair by Area
Williamson County,
Approved & Lit
Bring the address and the community. Phil maps the approval path — city, historic district, or ARB — and prepares the submittal as part of the design.
Gemmell Outdoor Lighting — Franklin, Tennessee. Notes on local approvals by Phil Gemmell.