Journal

How to Design Landscape Lighting: A Step-by-Step Method

September 28, 2026 Landscape Lighting By Phil Gemmell, Gemmell Outdoor Lighting

Learning how to design landscape lighting comes down to sequence. Walk the property at dusk, pick a short list of focal points, decide the layers, choose a fixture and beam for each subject, space the path lights to the path, plan the zones and transformer, then aim everything after dark. Fixtures are step four, not step one.

Step 1: Walk the property at dusk

A lighting design starts in the yard, with the light going. In full daylight you can’t see the problem you are solving. At dusk you still have enough light to read the architecture and the planting, and you can already see which parts of the house go flat first, which windows face the street, and where a tree will throw its shadow once a beam hits it from below. In full dark you lose the context.

That is why Phil walks every property personally, at dusk where he can, before anything is drawn. The walk is free and there is no obligation attached to it, and it is the first stage of how we approach landscape lighting design. If you are working out how to design landscape lighting for your own yard, do the same thing with a notebook. Walk the approach the way a guest would, then stand at the windows you actually sit at in the evening and look out. Those two viewpoints decide more of the plan than any catalog will.

Step 2: Pick the focal points

Deciding what stays dark is as much a design choice as deciding what gets light. From the walk notes, list the few things worth looking at after dark. That might be a specimen oak, a stone chimney, the front entry, or a retaining wall with enough texture to show under a grazing beam. Keep it short. A list that names every tree in the yard is an inventory, not a design.

There is a practical reason for that, too. Every subject on the list becomes at least one fixture, and at our rate each fixture is $250 to $350 installed, so the list is also the first draft of the budget. Paths and steps stay off this list. They are wayfinding, not focal points, and they get planned in Step 5. For subjects that tend to earn a place, our landscape lighting ideas post walks through facades, big hardwoods and moonlighting one at a time.

Step 3: Decide the layers

One layer of light reads flat, however well it is done. Most residential designs use three. The top layer is canopy light, whether uplights into the trees or fixtures mounted high in them to throw light down. The middle layer puts a beam on the one or two subjects that carry the scene. The ground layer covers paths, steps and bed edges, and its job is footing and outline, not drama.

The balance comes from what is already growing. A lot with mature hardwoods can carry most of its design on the top layer. A new build with young planting has to lean on the house and the ground layer for a few years, so the plan should leave spare capacity and wire for the trees it will have later. If you are mid-build, our post on when to bring in a landscape lighting designer covers where lighting fits in the build schedule. Our page on garden and tree lighting goes further into lighting specific trees and beds.

Step 4: Match fixture and beam to each subject

Buy fixtures first and the layout bends to whatever beams they happen to throw. That is how a lot of kit installs end up looking the way they do. Work the other way round. For each subject, decide what the light has to do, then find the fixture built for it. A tall, straight trunk wants a narrow spot. A low, spreading tree wants a wider flood. A well light set flush with the turf is the answer anywhere a mower passes over.

Two specifications get set here for the whole system. Every system we design runs at 2700 to 3000K, the warm end of LED, because it keeps brick and stone looking like brick and stone. And we spec solid brass and copper over painted aluminum. Middle Tennessee humidity and its freeze-thaw swings are hard on any coating. A failing finish doesn’t show on install day. It shows years later, out in the beds.

Step 5: Space the path and area lights

Path lights are crowded far more often than they are sparse. Set them close together at an even interval and the walk turns into an airport runway. Let the path set the spacing instead. Put fixtures closer together at a turn, a step or a change in grade, where a foot needs the extra cue, and farther apart on a straight run where there is nothing to warn anyone about. The width of the walk, its slope and whatever is planted along the edge all move the number, which is why no single distance works everywhere.

Judge it by one test. Standing on the path at night, you should see pools of light on the ground and not the fixtures making them. If the eye goes to the fixture heads, there are too many or they are too bright. Driveways and longer runs have their own layout questions, covered on our path and driveway lighting page.

Step 6: Plan zones, wiring and the transformer

Zones let parts of the property switch and dim on their own, so an evening on the back terrace doesn’t mean lighting the whole front yard. Decide them now. The transformer sizing and the wire layout come out differently depending on whether zones run separately or share a circuit, and adding a zone later usually means opening a trench back up.

This step is also where most future repair calls are either prevented or planted. The faults we see most are failed transformers, corroded connections, cut cable, water ingress and fixtures at end of life. Several of them start on the plan. Where the cable runs and how deep it sits, what the joints are made with, and how hard the transformer is worked all get decided on the plan. Before any trench goes in, call 811 so buried utility lines are marked.

What comes out of Step 6 is a drawing. It shows each fixture position with its beam direction and output, the zones, the wire routes, and where the transformer sits. That drawing is what gets approved and priced before anything goes in the ground.

Step 7: Aim after dark

The beam spread gets chosen on paper, but the aim can only be set at night with the fixture lit. How light falls across bark, stone or turf isn’t visible until it is on, and a few degrees of tilt decide whether an oak glows from the root flare up or just shows a bright patch halfway up the trunk. On our installs this happens on the final walkthrough, where Phil tests every circuit and adjusts anything that isn’t exactly right. It is part of our design and installation process, not an extra.

Night aiming is also when you catch light that is going where it shouldn’t. Downward fixtures along paths and under eaves should be full cutoff, which hides the lamp and keeps all of the light below the horizontal. Uplights on trees and walls can’t be full cutoff by definition. For those, keep the lamp shielded and the beam tight enough that it ends on the trunk or the wall instead of carrying on past it. Check every fixture from the street and from next door as well as from your own patio. Our dark-sky lighting guide covers shielding, color and ordinances in more detail.

Common questions

Should the lighting plan be drawn before or after planting?

Alongside it, if new planting is going in. Drawn together, the two plans keep cable routes out of future root zones and keep fixtures clear of what a shrub or tree will grow into. Against established planting, the lighting plan can come afterward, because the real canopy and shadows are already there to design around.

On a new build, leave spare transformer capacity for the trees that will be worth lighting later.

What should a lighting plan drawing show?

It should be drawn on your actual property, not a template. Look for every fixture position, the direction and output of each beam, how the system splits into zones, the cable routes, and the size and location of the transformer. If a proposal is only a fixture count and a price, it’s a quote.

There’s no plan behind it for you to check.

How do I keep landscape lights from shining into a neighbor’s windows?

Use full cutoff fixtures for anything pointing down, and aim each one onto its subject rather than out across the yard. For uplights, shield the lamp and use a beam narrow enough to stop on the tree or wall. Then walk the property line at night and look back toward your yard.

Any fixture whose lamp you can see from there needs re-aiming or a shield.

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