You have spent real money on your yard, but once the sun goes down it disappears. The walkway is a guessing game, the patio goes unused after dinner, and the one floodlight by the garage makes everything else look darker. Landscape lighting fixes that, but only if the layout, transformer, and wiring are planned together instead of pieced together one fixture at a time.
Quick answer: Landscape lighting installation means planning fixture locations, mounting a low-voltage transformer on a GFCI-protected outdoor circuit, burying 12-volt cable to each fixture, and setting automatic controls. Cost depends mainly on fixture count and quality, cable run length, transformer size, and whether a new 120-volt circuit or outlet is needed. Most yards are a one- or two-day install.
As a licensed electrical contractor (CSLB #974530), we design and install landscape lighting as part of our lighting installation services. This guide walks through how we plan a layout, how the system connects to your home’s electrical, what drives the price, and which parts are reasonable to do yourself.
What Landscape Lighting Installation Actually Includes
A landscape lighting system has four parts, and every one of them affects how the finished job looks and how long it lasts:
- The power source: a 120-volt outdoor circuit, usually ending at a GFCI-protected outlet with a weatherproof in-use cover, or a hardwired connection inside the transformer.
- The transformer: a box that steps 120-volt household power down to roughly 12 volts. Better units have multiple voltage taps so we can compensate for long cable runs.
- The cable: direct-burial low-voltage cable running from the transformer to the fixtures, split into separate runs so no single cable carries too much load.
- The fixtures and controls: path lights, uplights, well lights, wall washers, and step lights, plus the photocell, timer, or smart controller that turns everything on and off.
What separates a professional install from a box kit is how these parts are matched. A transformer that is barely big enough, a single long daisy-chained cable, and twist-on connectors buried in mulch will light up on day one. They are also the three reasons we get called back to fix landscape lighting a year or two later.
Low-Voltage vs. Line-Voltage Landscape Lighting
Almost every residential landscape lighting job we do is low voltage. The 12-volt side of the system is far safer to work around in planting beds, lets us move fixtures as plants grow, and does not require the deep trenching that 120-volt wiring does. Line-voltage (120-volt) fixtures still have a place, usually for brighter post lights, eave-mounted floods, or fixtures wired to an existing switch, but they are installed and protected like any other household circuit.
| Factor | Low-voltage (12V) landscape lighting | Line-voltage (120V) outdoor lighting |
|---|---|---|
| Typical uses | Path lights, uplights on trees and walls, step and deck lights, well lights | Post lights, eave floods, porch fixtures on a switch, larger security fixtures |
| Power source | Transformer plugged into or hardwired to a GFCI-protected outdoor circuit | Branch circuit from the panel, GFCI-protected |
| Burial and protection | Shallow direct-burial cable, with sealed wet-rated splices | Deeper burial in conduit or approved cable, with listed outdoor boxes |
| Flexibility | Easy to add or move fixtures as the landscape matures | Changes usually mean new trenching and boxes |
| Permit | Often not needed when connecting to an existing outlet; depends on scope | Usually required for new circuits |
Low-voltage landscape lighting systems are covered by their own article in the National Electrical Code (Article 411), which limits these systems to 30 volts and requires listed power supplies and components. In practice, that means the transformer and fixtures should carry a recognized listing mark, not just a no-name label.
How to Design Landscape Lighting That Looks Natural
Good landscape lighting is designed around what you want to see from inside the house and from the street, not around how many fixtures came in a kit. When we walk a property, we look for three things: what needs to be lit for safety, what deserves to be featured, and where light would be wasted or create glare.
Layer the light instead of flooding it
The most attractive yards use several techniques at low intensity rather than a few bright fixtures:
- Path and area lighting puts soft pools of light along walkways and driveway edges. Staggering fixtures on alternating sides avoids the “airport runway” look.
- Uplighting places a fixture at the base of a tree, palm, column, or textured wall to create depth.
- Moonlighting (downlighting) mounts a fixture high in a tree or under an eave aimed down, casting dappled light and shadow on the ground below.
- Grazing and washing light stone, stucco, and block walls at close or wide angles to bring out texture or even out a flat surface.
- Step and hardscape lights are built into stairs, seat walls, and retaining walls so elevation changes are visible.
Think about glare, neighbors, and the view from inside
A fixture that looks fine at noon can shine straight into a bedroom window or a neighbor’s patio at night. We choose shielded fixtures and beam spreads that put light on the target, not in someone’s eyes, and we check aim at night before we call a job done. We also think about the view from your family room and kitchen windows, since that is where most homeowners actually see their landscape lighting.
Plan for how the yard will grow
A young tree that needs one uplight today may need two in five years. Leaving spare capacity on the transformer and a little slack cable at each fixture makes it simple to adjust later without rewiring the system.
How Do I Connect Landscape Lights to the Electrical System?
Landscape lights connect to your home’s electrical through the transformer. There are two common ways we power that transformer, and which one fits depends on what is already on the outside of your house:
- Plug-in to an existing outdoor outlet. If there is a GFCI-protected exterior outlet in a sensible location with a weatherproof in-use cover, the transformer can plug in and mount next to it. We check that the circuit has capacity and is not shared with something that trips often, like a pool pump or holiday lighting.
- A new dedicated outdoor circuit. If there is no outlet where the transformer belongs, or the existing one is overloaded, we run a new 120-volt circuit from the panel to a GFCI-protected outlet or a hardwired connection. This is line-voltage work and is usually where permits come in.
Most homes we work on in Temecula and Murrieta were built in the 1980s or later and already have at least one exterior outlet, so the first question is usually whether that outlet is in a practical spot and on a circuit with room to spare.
Either way, the 120-volt connection is the part of the job that carries real shock and fire risk. Outdoor outlets need GFCI protection and a cover that stays weatherproof while something is plugged in. If your home already has outdoor kitchen or patio circuits, we look at how the lighting fits with them, and our guide to outdoor kitchen electrical wiring covers how those circuits are planned.
Low-Voltage Wiring: Cable, Splices, and Voltage Drop
The 12-volt side of the system looks simple, but it is where most do-it-yourself installs go wrong. Low voltage means higher current for the same wattage, and higher current over long cable runs causes voltage drop. That shows up as fixtures getting dimmer, or shifting color, the farther they are from the transformer.
We control voltage drop in several ways:
- Sizing the cable to the run. Heavier-gauge cable carries more load over longer distances with less loss.
- Splitting the load into multiple runs. Instead of one cable snaking around the whole yard, we send separate runs to the front walk, back patio, and side yard.
- Using a hub layout. Several fixtures connect at a central splice point so each receives nearly the same voltage, instead of the last light in a daisy chain getting the least.
- Using multi-tap transformers. A higher-voltage tap on a long run delivers the right voltage at the fixtures, which we confirm with a meter at the far end.
Splices are the other weak point. Irrigation, rain, and fertilizer salts work their way into any connection that is not sealed. We use wet-location-rated connectors filled with sealant, not tape-wrapped twist-on connectors or the pierce-style clips some kits include.
How deep does landscape lighting cable need to be buried?
The National Electrical Code allows low-voltage landscape lighting cable (30 volts or less) to be buried at a minimum of 6 inches. We treat that as a floor, not a target, and route cable away from places that get aerated, edged, or dug in. 120-volt circuits that feed the transformer need deeper burial and physical protection based on the wiring method.
Controls: Photocells, Timers, and Smart Options
Landscape lighting should take care of itself. The most common setups we install are:
- Photocell plus timer. Lights turn on at dusk and off after a set number of hours, so they are not burning all night.
- Astronomical timer. The timer calculates sunset and sunrise for your location and adjusts through the seasons, without a sensor that can get blocked by a plant.
- Smart controllers. Wi-Fi transformers or smart plugs let you set schedules, create zones, and turn lights on from your phone.
- Zoning. Separate front and back zones let you leave curb-side lights on longer while turning patio lights off earlier.
California’s Title 24 energy code sets control requirements for outdoor lighting permanently attached to a home, such as a photocell paired with a motion sensor or time switch, or an astronomical time clock, along with high-efficacy light sources like LEDs. The California Energy Commission’s residential lighting fact sheet summarizes those rules. When a project includes building-mounted fixtures, we design the controls to meet them.
How Much Do Landscape Lights Cost to Install?
We do not quote landscape lighting from a price list, because two yards of the same size can need very different systems. What we can tell you is what moves the number up or down, so you can compare quotes on equal terms.
| Cost factor | What pushes cost down | What pushes cost up |
|---|---|---|
| Number of fixtures | A focused plan for the front walk and a few feature trees | Full front and back yard coverage with many accents |
| Fixture quality | Composite or aluminum fixtures with replaceable LED lamps | Solid brass or copper fixtures, integrated LEDs, adjustable beam and color |
| Power source | An existing GFCI outdoor outlet in the right spot | A new dedicated circuit, panel work, or a long trench from the house |
| Cable runs and terrain | Short runs through soft planting beds | Long runs, slopes, rocky soil, or crossing under hardscape |
| Transformer and controls | A single transformer with a photocell and timer | Multiple transformers, smart controllers, or multiple zones |
| Hardscape integration | Fixtures staked in planting beds | Step lights and wall lights built into existing masonry |
A complete quote from us lists the fixture count and type, the transformer size with its spare capacity, how the system is powered, the controls, and whether a permit is included. If a quote does not say how the transformer was sized or how the splices are made, it is worth asking.
Operating cost is usually modest. LED landscape fixtures draw a fraction of what older halogen fixtures did, and a timer that shuts lights off at bedtime keeps run hours down on your Southern California Edison bill.
Common Landscape Lighting Mistakes We Fix
Many of the landscape lighting calls we get are repairs on systems that were installed without a plan. The patterns repeat:
- Overloaded transformers. Fixtures get added over the years until the transformer runs hot or shuts down.
- Daisy-chained runs. The last few fixtures are noticeably dimmer than the first.
- Shallow or exposed cable. Edgers, aerators, and shovels cut it, often leaving a whole section dark.
- Unsealed splices. Corrosion causes flicker and outages that come and go with the sprinklers.
- Sprinklers aimed at fixtures. Constant spray leaves hard-water buildup on lenses and speeds up corrosion, even on wet-rated fixtures.
- Extension cords as permanent power. A cord run across the lawn to a transformer is not a safe or durable power source.
- Indoor-rated parts outdoors. Fixtures and connectors need to be rated for wet or damp locations.
When we take over an existing system, we start by measuring the load on the transformer and the voltage at the far fixtures. That tells us whether the fix is a few connections or a reworked layout.
Landscape Lighting vs. Security Lighting
Landscape lighting and security lighting overlap, but they solve different problems. Landscape lighting is low-glare, layered, and focused on how the property looks and how you use it at night. Security lighting is brighter, often motion-activated, and aimed at entry points, side yards, and the driveway. Many of the homes we work on in Temecula and Murrieta benefit from both, so we plan them together: the security fixtures cover dark corners, and the landscape system handles the rest without fighting it for attention.
Maintenance That Keeps the System Working
A well-installed LED landscape system needs little attention, but a few habits keep it looking right:
- Check fixture aim a few times a year, since gardeners and pets bump fixtures out of position.
- Wipe lenses that collect dust or hard-water spots, which can noticeably cut light output.
- Trim plants that have grown over path lights or into uplight beams.
- Re-aim sprinkler heads that spray directly onto fixtures.
- Have the transformer load checked before adding fixtures.
When to Call a Licensed Electrician (and What Not to DIY)
Some landscape lighting work is reasonable for a handy homeowner. Solar stake lights need no wiring, and swapping a burned-out lamp or re-aiming a fixture on an existing low-voltage system is routine. Plugging a listed transformer into an existing GFCI-protected outdoor outlet is also within reach for many people.
Call a licensed electrician for anything involving 120-volt wiring or the panel:
- Adding a new outdoor circuit or outlet to power a transformer.
- Hardwiring a transformer instead of plugging it in.
- Line-voltage post lights, eave fixtures, or anything tied into an existing switch.
- Outdoor outlets that are not GFCI-protected, keep tripping, or have damaged covers.
- Any lighting near a pool or spa, where clearance rules are strict.
- A system that flickers or keeps going dark after you have checked the obvious causes.
We hold CSLB #974530 and carry insurance, so the circuit work is done to code, permitted when required, and backed by a licensed contractor. You can learn more about the range of work we do on our residential electrician page.
How We Handle Landscape Lighting Installation
- Assessment. We walk the property, ideally near dusk, talk through what you want lit and why, and check your existing outdoor outlets, circuits, and panel capacity.
- Design and quote. We lay out fixture types and locations, transformer size and location, cable runs, and controls, and give you a written quote that spells out each piece.
- Permit when required. If the job needs a new circuit or other permitted work, we pull the permit and schedule the inspection.
- Installation. We run any new 120-volt circuit first, mount the transformer, trench and lay cable, make sealed connections, and set fixtures.
- Night adjustment and testing. We return after dark to check aim, glare, and brightness, and meter voltage at the far fixtures.
- Inspection and cleanup. We meet the inspector when one is required, restore mulch and soil, haul off packaging, and show you how the controls work.
Ready to Light Up Your Yard?
If your yard goes dark the moment the sun sets, we can help you plan a landscape lighting system that is safe, efficient, and easy to live with. Explore our lighting installation work, see everything we do on our homepage, or contact us to schedule a walkthrough.
Frequently Asked Questions About Landscape Lighting Installation
Do you need an electrician to install landscape lighting?
You need an electrician for any part that involves 120-volt wiring, such as a new outdoor outlet, a dedicated circuit, or a hardwired transformer. Plug-in low-voltage fixtures on an existing GFCI outlet can be a DIY project, but we recommend a licensed electrician when the transformer needs new power or the layout is large enough that voltage drop and load sizing matter.
Is landscape lighting easy to install?
Small low-voltage kits are fairly easy to install, but a full yard is harder than it looks. Getting even brightness means sizing the transformer, planning separate cable runs, and making sealed splices that hold up to sprinklers. The digging takes time too. Most of the repair calls we get come from systems that went in quickly without that planning, so the effort upfront pays off.
Can we do landscape lighting ourselves as a DIY project?
Yes, a homeowner can install basic low-voltage landscape lighting on an existing GFCI-protected outdoor outlet. Use listed fixtures and a transformer with spare capacity, bury cable at least 6 inches, and use sealed connectors. Leave any new outlet, circuit, or hardwired connection to a licensed electrician, and call us if the far lights end up dim or flickering.
How do you install landscape lighting?
We install landscape lighting by planning the layout first, then working from the power source outward. That means confirming or adding a GFCI-protected outdoor circuit, mounting the transformer, laying out fixtures, trenching and running cable, making sealed connections, and setting controls. We finish by adjusting aim at night and checking voltage at the farthest fixtures before we hand the system over.
How do you install low-voltage landscape lighting?
Low-voltage landscape lighting is installed by mounting a transformer near a GFCI-protected outlet, running 12-volt direct-burial cable to each fixture, and connecting fixtures with sealed wet-rated splices. We size the transformer with room to spare, split long yards into several runs or hubs, and use a higher voltage tap on long runs so every light shines evenly.
How do you wire landscape lighting so every light is the same brightness?
Even brightness comes from controlling voltage drop. We use heavier cable on long runs, group fixtures at hub splice points instead of chaining them one after another, and spread the load across multiple runs from a multi-tap transformer. Then we measure the voltage at the far fixtures and adjust the tap until it falls within the fixture manufacturer’s recommended range.
How does landscape lighting installation work on install day?
On install day our crew handles any 120-volt circuit work first, then mounts the transformer, places fixtures, trenches, and lays cable. We make and seal the connections, test each run, and restore the soil and mulch. Most residential yards take one or two days. We then come back after dark to fine-tune fixture aim and brightness with you.
How do you create a landscape lighting plan?
A landscape lighting plan starts with a walk of the property at or near dusk. We note paths, steps, and entries that need light for safety, then pick the trees, walls, and features worth highlighting. From there we sketch fixture types and locations, group them into cable runs, size the transformer, and choose controls, which becomes the basis for your written quote.
Where should landscape lighting be placed?
Landscape lighting should go where it helps you move safely and where it shows off the best features of your yard. That usually means walkway edges, steps, the front entry, and the driveway, plus uplights on mature trees and textured walls. We avoid aiming fixtures toward windows, the street, or neighbors’ yards, and we keep them clear of direct sprinkler spray.
How do you set a landscape lighting timer?
Most landscape lighting timers are set by choosing an on time, usually dusk via a photocell, and an off time or run length in hours. Astronomical timers only need your location and the current time, then adjust automatically through the seasons. Smart controllers are set in an app. When we install a system, we set the schedule with you and show you how to change it.
Will landscape lighting raise our electric bill much?
LED landscape lighting usually adds only a small amount to an electric bill. LED fixtures draw far less power than old halogen lamps, and a timer that shuts lights off at bedtime limits run hours. The exact impact depends on fixture count, wattage, hours of use, and your SCE rate plan, so we can estimate your system’s total wattage during planning.
Can landscape lighting be controlled from a phone?
Yes, landscape lighting can be controlled from a phone with a Wi-Fi-enabled transformer or a compatible smart controller. That lets you set schedules, create front and back zones, dim some fixtures, and turn lights on when you are away. We recommend confirming that your Wi-Fi signal reaches the transformer location before choosing a smart option, and we can check that during the walkthrough.
Can we add more fixtures to our landscape lighting later?
Usually yes, as long as the transformer and cable runs have spare capacity. That is why we size transformers with headroom and leave room on the runs during installation. If an existing system is already near its limit, we can add a second transformer or a new run rather than overloading what is there, and we meter the load before and after.
Do we need a permit for landscape lighting?
It depends on the scope of the work. A low-voltage system plugged into an existing outdoor outlet often does not need a permit, while a new 120-volt circuit, a hardwired transformer, or line-voltage fixtures typically do. Requirements vary by jurisdiction, so we confirm what applies during planning and pull the permit ourselves when one is required.
Can landscape lights be installed near a pool or spa?
Yes, but lighting near a pool or spa has stricter clearance and protection rules than the rest of the yard. Transformer location, fixture distance from the water, and GFCI protection all matter. We review the pool and spa layout during planning and position fixtures and equipment to meet the code requirements for that area, which is one reason we do not recommend DIY lighting around water.
How long do LED landscape lights last?
Quality LED landscape fixtures typically last many years, and the LEDs themselves are rated for tens of thousands of hours. In practice, the wiring and connections usually fail before the LED does if they were not installed correctly. Sealed splices, properly buried cable, and a transformer that is not overloaded are what let a system last as long as its fixtures.
