Outdoor Electrical Types and Typical Costs
Not all outdoor power jobs are equal. Here is how the main categories compare in terms of scope and what drives the price for each.
Weatherproof GPO brands and pricing
The fitting itself is a small part of the total cost, but quality matters for longevity outdoors. These are the brands Australian electricians commonly install:
Standard weatherproof GPOs (IP53–IP54) suit most sheltered outdoor locations. Fully exposed positions need IP56 or higher. Coastal properties within a few kilometres of the ocean should use IP66-rated fittings in stainless steel or marine-grade enclosures to resist salt corrosion.
12V/24V garden lighting vs 240V mains
For garden and outdoor lighting, homeowners have a choice between low-voltage (12V or 24V) LED systems and 240V mains-powered lights:
12V/24V low-voltage LED systems run off a transformer plugged into a standard GPO. Cable can be laid in a shallow trench or along the surface. Installation is simpler and can often be done without an electrician for the light fixtures themselves (the transformer still plugs into a GPO that must be installed by a licensed electrician). Brands like HPM and
Fusion Lighting offer quality 12V/24V garden light kits.
240V mains-powered lights require a licensed electrician for every fitting. Cable must be buried at compliant depth in conduit, and each fixture needs IP-rated connections. Brighter output and no transformer to hide, but significantly more expensive to install. Each light point costs $150–$500 installed depending on location and wiring complexity.
For most residential garden lighting, low-voltage LED systems offer the best combination of safety, appearance, and value. Reserve 240V for high-output security floodlights and feature lighting where brightness is the priority.
What Affects the Cost
Distance from power source. The single biggest cost driver. Tapping a circuit 3 metres away through one wall is dramatically cheaper than a 30-metre underground run to a back shed. Each additional metre of cable run adds both material and labour cost.
Wall and surface construction. Brick, concrete, and stone are harder and slower to drill than timber framing. Rendered block and retaining walls may need core-drilling. A standard brick penetration takes 15–20 minutes; sandstone or bluestone can take three times that.
Underground vs surface. Underground cable runs cost more but look cleaner and are better protected. Rocky, root-filled, or clay soil adds further expense. Cable sizing must comply with
AS/NZS 3008 voltage drop limits, which may require 4mm² or 6mm² cable instead of standard 2.5mm² on runs over 20 metres.
Weatherproofing grade. Standard IP53–IP54 fittings cost $15–$35 per point. Fully exposed or coastal locations need IP66+ fittings at $80–$250 per point. The jump from sheltered to exposed is a significant material cost increase.
Switchboard capacity. If the board is full, adding a new outdoor circuit may mean
replacing the switchboard first, a separate project costing $1,000–$3,600 per job.
Pool and spa zones. AS/NZS 3000 Section 6 defines strict exclusion zones around pools and spas. Zone 1 extends 2 metres from the water's edge, and no electrical infrastructure is permitted within this zone unless protected by a compliant splash-proof barrier at least 1.8 metres high. Equipment must have equipotential bonding to the pool structure. Non-compliant installations must be relocated, adding cost.
Shed sub-board. A detached shed or garage with multiple GPOs, lights, and possibly three-phase for workshop equipment needs its own sub-board. The sub-board alone costs $300–$600 installed, on top of the cable run.
Voltage drop on long runs. Cable runs over 20 metres may need heavier gauge cable (4mm² or 6mm²) to keep voltage within AS/NZS 3008 limits. Undersized cable causes power tools and motors to underperform and lights to dim.
A weatherproof powerpoint mounted on an external wall near an existing indoor circuit, with a short cable run through one wall, sits toward $1,500. An underground cable run of 25 metres or more to a detached shed, with trenching through established gardens, a dedicated sub-board, and heavy-gauge cable for voltage drop compliance, pushes toward $4,600.
When You Might Need Outdoor Electrical Work
Outdoor power is not always a planned project. These are the common triggers:
New shed, garage, or workshop that needs power for tools, lighting, or a bar fridge
Outdoor entertaining area with a kitchen, bar fridge, TV mount, or sound system
Pool or spa installation requiring dedicated pump, chlorinator, and heating circuits
Security lighting with motion sensors around the perimeter of the property
Garden lighting for paths, feature plants, or entertaining areas
Granny flat or backyard studio needing its own sub-board and multiple circuits
EV charger mounted externally on a carport or detached garage:
charger supply and installation costs $1,500–$3,600 per job, including its dedicated circuit; ask which outdoor cabling is already covered in the quote.
Outdoor fans on a covered alfresco or pergola, requiring a dedicated switch and weatherproof wiring
If your outdoor project involves decking ($3,600–$21,200 per job for construction) or a pergola ($3,000–$20,400 per job for construction), coordinate your electrician with the carpenter so cable conduit can be laid before the structure goes up. Retrofitting cable under a finished deck is harder and more expensive.
City and Regional Price Comparison
Prices vary by city and by property type within each city.
At the city level, Sydney is the baseline at $1,500–$4,600 per job. Melbourne and Brisbane track close to Sydney. Smaller contractor pools and material logistics affect quotes in Perth and Adelaide; see the Pricing by City table for local ranges. Brisbane's outdoor living culture drives high demand year-round, while its subtropical weather requires IP66-rated weatherproofing on all exposed fittings.
Within any city, the primary variable is cable run distance. Compact inner-city blocks (Newtown in Sydney, Fitzroy in Melbourne) constrain routing options but keep distances short. Perth's larger suburban blocks of 600–800 square metres often mean 25–35 metre underground runs to back sheds, pushing costs higher. Soil type matters too: sandy coastal soil trenches easily, while limestone in Perth's northern suburbs or clay in Melbourne's east requires more labour. Properties with existing nearby power (a GPO or light on the other side of the target wall) save substantially on cable and labour compared to new runs from the switchboard.
Climate affects material choices and therefore cost. Brisbane and Perth demand UV-stabilised conduit and higher IP-rated fittings as standard. Melbourne's freeze-thaw cycles punish cheap fittings that crack in cold snaps. Coastal suburbs in every city need marine-grade stainless steel enclosures that cost 3–5 times more than standard plastic weatherproof fittings.
How We Calculate
Estimates are based on current licensed Electrician rates, adjusted for regional labour markets and typical property types. All prices include GST. We factor in standard cable runs, weatherproof fittings, circuit protection, and typical job complexity. Switchboard upgrades, landscaping reinstatement, pool zone compliance, or shed sub-board installations are excluded and would be quoted separately by your Electrician.