How Much Does Decking Cost in Melbourne? (2026 Price Guide)
Decking in Melbourne typically costs between $400 and $550 per square metre, supply and install, depending on the material — treated pine at the lower end, composite decking at the top. A standard 24m² deck lands somewhere between $9,600 and $13,200 before any site-specific factors.
Decking cost by material
| Material | Cost per m² | 24m² deck |
|---|---|---|
| Treated pine | $400 | $9,600 |
| Merbau / hardwood | $480 | $11,520 |
| Composite decking | $550 | $13,200 |
These figures are supply-and-install, GST inclusive, and reflect a straightforward job with reasonable site access. They're not a lead-in "from" price designed to get you on the phone — it's what the job actually costs.
What actually changes the price
- Height above ground — a deck under 300mm needs far less structural work than one built above 800mm, which usually needs engineered footings and balustrades.
- Attached vs. freestanding — decks attached to the house tie into existing structure and often trigger a building permit requirement, adding cost and time.
- New build vs. replacement — replacing existing decking on a sound structure is cheaper than a full new deck with new footings.
- Access — narrow side access or a sloped block adds labour time that a flat, open backyard doesn't.
Frequently asked questions
How much does decking cost per square metre in Melbourne?
Treated pine decking costs around $400 per square metre installed, merbau or hardwood around $480 per square metre, and composite decking around $550 per square metre — all supply and install, GST inclusive.
Is composite decking worth the extra cost over timber?
Composite decking costs more upfront than treated pine but needs no staining or oiling, resists rot and fading, and typically lasts longer with less maintenance — many homeowners find it pays back the difference over the life of the deck.
Does a new deck need council approval in Victoria?
It depends on the height and whether it's attached to the house — many decking projects still require a building permit in Victoria regardless of size. A vetted contractor will confirm this before work starts, which is why decks over 800mm high or attached to the house often need a site visit before final pricing.
Get your exact price in under a minute
Enter your deck's dimensions and get a real, estimated price from our live Melbourne rate card — not a placeholder.
Get an estimated price instantly →