Landscape Lighting Installation Cost
A professionally installed low-voltage landscape lighting system typically costs $2,000 to $4,500 for a 10 to 20 fixture layout with a transformer and buried wiring. Priced per fixture, installed runs $100 to $350. A DIY plug-in kit covers a small yard for $150 to $600. Here is how the numbers break down.
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| Project | Installed range | Notes |
|---|---|---|
| Small accent layout (4–6 fixtures) | $800 – $2,000 | Entry, a few path lights, one transformer |
| Typical pro system (10–20 fixtures) | $2,000 – $4,500 | Path, up-lights, transformer, buried wire |
| Large estate system (25+ fixtures) | $5,000 – $12,000+ | Multiple zones, larger transformer, design |
| Per fixture, installed | $100 – $350 | Fixture, lamp, share of wire and transformer |
| DIY plug-in kit, small yard | $150 – $600 | Homeowner-installed, no buried line voltage |
| Line item | Typical range | Notes |
|---|---|---|
| Low-voltage fixtures | $50 – $200 each | Brass or cast fixtures cost more, last longer |
| Transformer | $200 – $700 | Sized to total wattage plus headroom |
| Direct-burial cable | $0.50 – $2 per ft | Heavier gauge for long runs |
| Design and layout | $200 – $1,000 | Included by some pros, separate by others |
| Labor: trenching and aiming | $60 – $120 per hour | Burying wire, mounting, night aiming |
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How low-voltage landscape lighting is priced
Almost all residential landscape lighting is low-voltage: a transformer steps household 120V down to 12V, which is safe to bury in shallow trenches and handle around plantings and water features. Because the 12V side is low-voltage, much of a system can be installed without the permits and conduit that line-voltage outdoor and security lighting demands.
A system price is the sum of three things: the fixtures (the most visible cost), the transformer and cable (the backbone), and the labor to lay it out, bury the wire, and aim each light at night. A typical 10 to 20 fixture home system lands at $2,000 to $4,500, which works out to roughly $100 to $350 per fixture once the transformer and wire are spread across the count.
The transformer is the heart of the system
Every low-voltage system runs through a transformer sized to the total wattage of the fixtures, with headroom for future additions. A small layout uses a 150-watt transformer; a 20-fixture system often needs 300 watts or more. Undersizing the transformer dims the lights at the far end of a run (voltage drop), so a good installer sizes it generously and may run multiple cable taps to keep every fixture near full brightness.
Transformers with photocells and timers turn the system on at dusk and off on a schedule automatically. Smart transformers add app and zone control. The transformer plugs into a line-voltage outlet, so if none is nearby, add the cost of a new exterior outlet. Budget $200 to $700 for the transformer depending on capacity and features.
- ·Size the transformer to total wattage plus 20 to 30 percent headroom
- ·Voltage drop dims fixtures far from the transformer; good design prevents it
- ·A photocell plus timer automates dusk-on, scheduled-off operation
- ·LED fixtures draw far less, so a single transformer powers more lights
Pro design vs DIY kits
A DIY kit is the entry point: a small transformer, a spool of cable, and a handful of path or spot lights, sold as a bundle for $150 to $600. For a modest front bed or a short walkway, a careful homeowner can stake the lights, lay the cable, and plug in the transformer in an afternoon. The limits show up at scale, with voltage drop, uneven aiming, and exposed cable on a larger yard.
A professional install buys you design and durability. The pro lays out beam angles and fixture types (path lights, up-lights for trees, wash lights for walls, well lights flush in beds), buries the cable below mower depth, sizes the transformer correctly, and aims every fixture after dark when the effect is actually visible. Because LED fixtures draw so little, a single circuit comfortably carries a large layout, the same math behind how many lights one 15 amp circuit holds. Brass and cast fixtures from a pro outlast the aluminum and plastic in most kits, which is much of why the per-fixture number is higher than a simpler indoor fixture swap.
What drives the per-fixture cost
Fixture material is the first lever. A plastic or aluminum path light keeps the per-fixture cost near $100; a solid brass up-light with a quality LED lamp pushes it to $250 to $350 installed but resists corrosion for decades. The labor per fixture is similar either way, so the spread is mostly the hardware you choose.
Run length and obstacles are the second lever. Lights far from the transformer need heavier cable and longer trenches, and crossing a driveway or hardscape means boring under it. A clean, open yard with beds near the house keeps the per-fixture figure low; a sprawling lot with lights at the property line pushes it up.
Operating cost and upkeep
LED landscape lighting is inexpensive to run. A 20-fixture LED system draws roughly the power of a couple of household bulbs, so the seasonal electric cost is minimal. The ongoing items are occasional lamp replacement (LED lamps last years), re-aiming after plants grow, and clearing fixtures of mulch and debris.
The most common service call is a section gone dark, usually a nicked cable from digging or a corroded connection at a fixture. Waterproof connectors and burying the cable properly the first time prevent most of these, which is another argument for a clean professional install on a larger system.
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