Outdoor lighting installation is one of the most effective ways to improve the beauty, functionality, and safety of a property. Whether the goal is illuminating a garden, highlighting architectural features, or creating a welcoming ambiance for evening gatherings, a properly planned lighting system can transform how a property looks and functions after dark. This guide covers what you need to know before starting a project — from the components involved to the practical steps of installation — whether you’re planning to do it yourself or want to understand what a professional installation involves.
Outdoor lighting installation is the process of planning, wiring, and positioning light fixtures around a property’s exterior, typically using a low-voltage system powered by a transformer that steps down standard household current. A complete installation includes choosing a power source (low-voltage, line-voltage, or solar), selecting fixtures suited to each area, running and burying cable, and making final adjustments once the system is powered on.
Getting this right matters for more than looks. Poorly planned lighting wastes money on the wrong fixtures, exposed wiring becomes a safety and durability problem, and a system installed without checking local utility lines can turn into a costly mistake. The sections below walk through how to design and install outdoor lighting in order — planning, choosing a power source, understanding the components, and installing the system safely.
It’s also worth setting expectations up front: outdoor lighting installation is rarely a single afternoon of buying fixtures and pushing them into the ground. The projects that end up looking professional are the ones where planning, power source, and component selection are all decided before a single hole is dug — not figured out midway through.
Before You Start: Planning Your Outdoor Lighting Layout
Before buying any fixtures, walk your property and identify what you actually want to light and why. Focal points worth highlighting might include architectural details, mature trees, garden beds, or a water feature. Functional areas — walkways, steps, driveways, patios — need light for a different reason: visibility and safety, not just looks.
Two practical steps belong in this planning stage, both of which are easy to skip and expensive to fix later:
- Locate your power source first. Identify a protected, outdoor-rated GFCI outlet where a transformer can be mounted. This outlet’s location becomes the starting point for your entire wiring layout, so it’s worth confirming before finalizing where fixtures will go.
- Call before you dig. Before any trenching begins, contact your local utility-locate service to have underground lines marked. This applies even to a small project — buried utility lines are not always where property records suggest, and hitting one is both dangerous and costly.
If you want more depth on this planning stage before buying fixtures, our guide to planning a landscape lighting design walks through zone-mapping and fixture selection in more detail.
Once these two items are settled, sketch a rough layout of your property with focal points, functional zones, and the transformer location marked. This becomes your reference for both fixture selection and wiring, and it’s worth revisiting once fixtures are purchased in case any planned spot doesn’t quite work once you’re standing in the yard with a fixture in hand.
Choosing Your Power Source: LED, Low-Voltage, and Solar
Outdoor lighting installation generally comes down to a choice between three power sources, each suited to different situations.
LED Fixtures
LED (Light Emitting Diode) lighting has become the standard choice for most landscape lighting installations, and for good reason. LED fixtures use significantly less energy than older incandescent or halogen bulbs, which lowers both electricity costs and heat output — reducing the risk of accidental burns near fixtures people or pets might brush against. LED bulbs also last considerably longer than traditional bulbs, and many are dimmable, which allows more control over the mood and intensity of a lighting design.
Low-Voltage Systems
Low-voltage lighting runs on a 12-volt system rather than standard 120-volt household current, stepped down through a transformer. Because the voltage is so much lower, low-voltage systems are safer to install and handle than line-voltage (120V) systems, which is why they’re the standard choice for most residential landscape lighting projects. Low-voltage systems support a wide range of fixture types — path lights, spotlights, floodlights — and can be paired with timers, dimmers, or remote controls.
Solar-Powered Lights
Solar fixtures charge during the day and turn on automatically at dusk, with no wiring required. This makes them a convenient option for areas that are difficult or costly to wire, such as a garden bed far from the house. The trade-off is consistency: solar light output depends on how much direct sunlight a fixture receives, so performance can be uneven in shaded areas or during extended cloudy periods, and brightness varies more than with a wired system. If you’re deciding between the two for a specific area of your property, our solar vs. wired LED lighting comparison breaks down which fits which situation.
| Power Source | Best For | Key Trade-Off |
|---|---|---|
| LED (Low-Voltage) | Most residential landscape lighting projects; energy efficiency and longevity | Requires wiring and a transformer |
| Line-Voltage (120V) | Larger areas needing higher output, e.g. large driveways or security lighting | Requires a licensed electrician and often a permit |
| Solar | Hard-to-wire areas; simple, no-wiring installs | Inconsistent brightness; depends on sunlight exposure |
Understanding the Core Components of a Landscape Lighting System
A landscape lighting system is made up of a small number of components that work together. Understanding each one makes it easier to plan a system correctly, whether you’re installing it yourself or discussing a design with a professional.
1. Transformer
The transformer converts standard 120-volt household current down to the 12-volt (or similar low-voltage) current used by most landscape fixtures. It’s typically mounted near an outdoor GFCI outlet and must be weather-resistant. Transformer sizing matters: add up the wattage of every fixture you plan to run on that transformer, then choose a transformer rated above that total — for example, ten 5-watt fixtures total 50 watts, so a 75- or 100-watt transformer leaves room to add fixtures later without needing a second transformer.
2. Bulb
The bulb is the light source itself. LED, halogen, and incandescent bulbs are all options, though LED has become the default choice for most installations due to its efficiency and lifespan.
3. Fixture Housing
The housing is the outer shell that protects the bulb and determines how the light spreads — path lights, spotlights, floodlights, and well lights are all different housing types suited to different effects. If you’re deciding between highlighting a walkway versus a specific feature, our pathway vs. accent lighting guide compares these two approaches directly.
4. Stake
The stake anchors a fixture in the ground, keeping it stable and allowing its height and angle to be adjusted. Stakes are typically metal or durable plastic, built to withstand outdoor conditions.
5. Cable
Cable connects the transformer to each fixture and is typically buried to protect it and keep the installation looking clean. Cable gauge needs to match the voltage and current draw of the fixtures on that run — thinner cable works for shorter runs with fewer fixtures, while longer runs or higher total wattage need a heavier gauge to avoid voltage drop.
The Installation Process: From Planning to Final Adjustments
With a layout, power source, and components decided, landscape lighting install work itself follows a fairly consistent sequence, whether it’s a small DIY project or a full professional outdoor lighting installation:
- Position the fixtures according to your planned layout, adjusting slightly on-site as needed once you see how each spot actually looks after dark.
- Dig trenches for buried cable. Trenches for low-voltage cable are typically dug around 6 to 12 inches deep, which protects the wire while keeping it well clear of most typical digging (like planting) done later. Be mindful of the utility lines marked during your earlier locate call, as well as existing plant roots.
- Run and connect the cable from the transformer to each fixture, following the manufacturer’s instructions for making secure, weatherproof connections at every joint.
- Connect and mount the transformer near its GFCI outlet, and confirm it’s rated for outdoor use.
- Power on and adjust. Test the system after dark, and fine-tune fixture angles and positions based on how the light actually falls — this step is where a plan that looked good on paper gets refined into a plan that looks good in person.
Safety, Permits, and Long-Term Performance
Low-voltage landscape lighting installations generally don’t require an electrical permit, since they run on a transformer stepped down from standard household current. Line-voltage (120V) installations are a different matter — these typically require a licensed electrician and may require a permit, since they involve working with full household voltage rather than a stepped-down current. It’s worth confirming local requirements before starting any project that goes beyond a standard low-voltage setup.
For long-term performance, a few habits go a long way: inspect connections periodically for corrosion or looseness, keep plantings trimmed back from fixtures as they grow, and adjust fixture angles seasonally as landscaping changes. Our seasonal maintenance checklist covers this in more detail. Motion-sensor fixtures add a security benefit for driveways or side entrances, automatically activating when movement is detected rather than staying on continuously — part of how outdoor lighting improves overall property safety beyond just visibility.
Climate is also worth planning for, particularly in a region with real winters. Freeze-thaw cycles can shift soil around buried cable over time, which is one reason many installers leave a small amount of slack in each wire run rather than pulling it taut. Fixtures left in place over winter should be rated for the temperature swings they’ll actually face, and any connectors exposed to moisture benefit from a weatherproof seal to prevent corrosion from repeated freezing and thawing.
Getting Started With Outdoor Lighting Installation
Outdoor lighting installation rewards planning more than any other single factor. Identifying your power source and utility lines before digging, understanding how the core components work together, and matching your power source (LED low-voltage, line-voltage, or solar) to the actual demands of your property are what separate an outdoor landscape lighting installation that performs well for years from one that needs constant troubleshooting. Getting your outdoor lighting setup right from the start — whether you take this on as a DIY project or work with a professional — gives you a system that’s safe, functional, and built to last.
Frequently Asked Questions
What is outdoor lighting installation and why is it important?
Outdoor lighting installation involves strategically placing lighting fixtures around a property’s exterior — from garden beds to a full house exterior lighting installation — to improve safety, enhance curb appeal, and highlight landscape features. It plays a role in creating a welcoming atmosphere, deterring intruders, and extending how late outdoor spaces can be used.
What is included in a typical landscape lighting installation?
A standard landscape lighting installation includes a design layout, fixture selection (path lights, spotlights, or wall washes, for example), wiring, transformer setup, and final on-site adjustments once the system is powered on.
Can I install landscape lighting myself, or should I hire a professional?
A simple low-voltage setup with a plug-in transformer and no new wiring runs is manageable as a DIY project for many homeowners. A full-property plan, line-voltage work, or installations tied into main electrical service are generally better suited to a licensed professional.
What are the best types of fixtures for outdoor lighting installation?
Commonly used fixture types include path lights for walkways, spotlights for trees and architectural features, wall wash lights for walls and fences, and deck or step lights for safety. LED versions of each are generally recommended for energy efficiency and longevity.
Is landscape lighting installation energy-efficient?
Yes. Low-voltage LED systems use significantly less power than line-voltage or older incandescent setups. Adding timers, motion sensors, or smart controls can reduce electricity use further while adding convenience.
What’s the difference between low-voltage and line-voltage outdoor lighting?
Low-voltage systems run on 12 volts, stepped down from household current through a transformer, and are safer and simpler to install as a result. Line-voltage systems run on standard 120-volt household current, generally require a licensed electrician, and are typically reserved for larger-scale lighting needs where low-voltage output isn’t sufficient.
How do I maintain an outdoor landscape lighting system?
Maintenance includes cleaning fixture lenses, replacing bulbs that aren’t LED, checking for exposed or damaged wiring, trimming back plants that have grown over fixtures, and adjusting angles or timers as the seasons change.
Plan Your Outdoor Lighting Installation With Land-Con
Land-Con has spent 25+ years designing and installing outdoor lighting systems across Toronto and the GTA, working through this same process — planning, component selection, and installation — on properties of every size. If you’d rather have our in-house team handle the planning and installation for you, call 416.504.5263 or email info@landcon.ca to book a consultation.
Land-Con serves Toronto and the surrounding GTA, including Markham, Vaughan, Richmond Hill, Oakville, Etobicoke, North York, East York, Mississauga, Woodbridge, Thornhill, Newmarket, Concord, Maple, Kleinburg, Aurora, Pickering, Burlington, Hamilton, Waterloo, Kitchener, Barrie, and Ottawa.
