How much does decking cost in Brisbane?
Brisbane deck builders price by the square metre, supplied and built, and the board you pick sets most of that rate. Treated pine is $180–$350, merbau $300–$550, spotted gum $350–$600 and standard composite $280–$700. Taken as a whole job, a medium hardwood deck comes to $8,000–$16,000, with $12,000 a common finishing point. Because the city's winters are mild, a back deck here can be used for most of the year, so it is worth weighing upkeep alongside the build price. If you also want a roof over it, plan for that from the start, because in Queensland a roof changes the approval picture. Prices include GST.
Comparing cities, or after the Australia-wide picture? See the national guide: Decking cost in Australia.
Detailed Pricing — Decking Cost in Brisbane 2026
| Service | Low | Typical | High |
|---|---|---|---|
| Treated pine deck (per sqm) | $180/sqm | $260 | $350 |
| Hardwood deck — merbau (per sqm) | $300/sqm | $420 | $550 |
| Hardwood deck — spotted gum (per sqm) | $350/sqm | $480 | $600 |
| Composite deck (per sqm) | $280/sqm | $550 | $700 |
| Small deck (15 sqm, hardwood) | $5,000total | $7,500 | $10,000 |
| Medium deck (25 sqm, hardwood) | $8,000total | $12,000 | $16,000 |
| Large deck (40 sqm, hardwood) | $13,000total | $19,000 | $26,000 |
| Deck steps (per step) | $180/step | $300 | $400 |
| Deck balustrade / railing (per lm) | $150/lm | $280 | $450 |
| Deck sanding + oiling (per sqm) | $25/sqm | $40 | $60 |
| Old deck demolition + removal | $20/sqm | $35 | $55 |
| Pergola over deck (basic timber or aluminium, about 4 x 4 m to 4 x 6 m) | $5,000total | $8,000 | $15,000 |
| Deck stairs (per flight, installed) | $1,000installed | $2,000 | $4,500 |
| Elevated / high-set deck surcharge (per sqm) | $50/sqm | $100 | $180 |
| Deck re-oil only (clean + 2 coats, no sanding, per sqm) | $15/sqm | $30 | $45 |
| Hardwood deck — blackbutt (per sqm) | $330/sqm | $450 | $620 |
| Composite deck — premium capped / solid-core, Trex class (per sqm) | $450/sqm | $570 | $900 |
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Get Brisbane quotes →Prices include GST. Based on Brisbane metro area, October 2026. Outer suburbs may vary.
Brisbane's Decking Market in 2026
Brisbane's subtropical climate makes outdoor living a year-round reality, and decking is one of the most popular home improvements in the city. But the same warm, wet conditions that make decking so desirable also create challenges that southern cities simply don't face. Understanding Brisbane's specific conditions is essential to choosing the right materials and builder.
Moisture and humidity are the biggest threat. Brisbane's summer humidity regularly exceeds 80%, and the city receives significantly more rainfall than Melbourne or Adelaide. This constant moisture exposure means timber decking in Brisbane works harder to resist rot, mould, and warping than in drier climates. Hardwoods with natural oil content — spotted gum, blackbutt, and ironbark — are the best performers in Brisbane's humidity. Treated pine, while cheap ($180–$350/sqm installed), can struggle with the moisture load and typically needs restaining every 12–18 months in Brisbane versus 2–3 years in drier cities. Many Brisbane builders are increasingly recommending composite decking for its moisture resistance, despite the higher upfront cost.
Spotted gum is the local favourite. Spotted gum is native to southeast Queensland, which means supply is strong and pricing is more competitive in Brisbane than in Perth or Adelaide where it needs to be transported. A spotted gum deck in Brisbane runs $350–$600/sqm installed. Beyond pricing, spotted gum is exceptionally hard (Janka hardness 11.0) and naturally resistant to termites and fungal decay, making it arguably the best-performing natural timber for Brisbane's conditions.
Termite risk is real and present. Brisbane sits firmly in the highest termite risk zone in Australia. Every timber deck in Brisbane needs either naturally termite-resistant timber (spotted gum, ironbark, blackbutt) or a proper termite management system. H4-treated pine is termite-resistant but not termite-proof — subterranean termites can still bridge treated timber if conditions allow. Steel or concrete substructures with timber decking boards on top are increasingly popular in Brisbane for this reason, eliminating the termite risk on the structural elements where damage is most dangerous.
Storm season affects scheduling. Brisbane's storm season (October–March) brings intense rainfall, lightning, and occasional hail that can halt outdoor building work for days at a time. Most Brisbane deck builders factor weather delays into their quotes during this period, typically adding 3–5 days to the timeline. The optimal window for decking construction in Brisbane is April–September — dry, mild, and tradies have better availability. The other advantage of a winter build: your new deck has time to settle and weather before the intense summer UV hits it, giving any applied oils or stains a better bond.
How Decking Costs Vary Across Brisbane
Inner suburbs (New Farm, Paddington, Woolloongabba, West End): Tight blocks, older homes on stumps, and heritage considerations make inner Brisbane the most complex and expensive area for decking. Many Queenslander homes in Paddington and West End have existing verandahs that homeowners want to extend or replace — this heritage-adjacent work requires sympathetic design and sometimes council approval. Access is often restricted to narrow side paths with no rear vehicle entry. Inner-city decking runs $320–$450/sqm, reflecting the complexity. The premium is worth it in terms of property value — a well-built deck in Paddington adds significant appeal in a market where outdoor entertaining space is scarce.
Middle ring (Coorparoo, Mount Gravatt, Stafford Heights, Ashgrove): The sweet spot for Brisbane decking. Post-war brick homes on reasonable blocks with adequate access. Many of these homes have flat or gently sloping yards that make ground-level decking straightforward. Standard pricing of $300–$380/sqm applies for hardwood, with the lower end achievable on flat sites with good access. These suburbs also have the strongest concentration of established deck builders, making it easy to get competitive quotes.
Bayside and river suburbs (Wynnum, Manly, Bulimba, Hawthorne): Water proximity adds both appeal and cost. Decks with water views command premium design attention, and the salt air in bayside suburbs (Wynnum, Manly) requires marine-grade stainless fixings — the same consideration as coastal Perth or Sydney. River suburbs like Bulimba and Hawthorne are less affected by salt but the high property values mean homeowners invest more in premium materials and finishes. Budget $300–$420/sqm for a quality deck in these locations.
Outer suburbs (Springfield, Logan, Redbank Plains, North Lakes): Newer housing estates with flat blocks, good access, and standard concrete slab homes. Decking here is typically an alfresco extension off the back of the house, built on a flat site at ground level. These are the most efficient builds and the most affordable in Brisbane at $200–$320/sqm. Many homes in these suburbs have existing concrete patios that can serve as a deck substructure with timber boards laid over battens on top — this overlay approach is cheaper than a full ground-up build and is an excellent budget option.
Decking cost per m² in Brisbane (2026): treated pine, merbau, spotted gum and composite
Decking in Brisbane costs $180–$600 per square metre built, depending on the board: treated pine $180–$350/m², merbau $300–$550/m², spotted gum $350–$600/m² and composite $280–$700/m². Per square metre covers the posts, bearers, joists and boards on a low-set deck. As whole jobs in hardwood: a small 15 m² deck is $5,000–$10,000, a medium 25 m² deck $8,000–$16,000 and a large 40 m² deck $13,000–$26,000. Balustrade is $150–$450 per metre on top.
| Job | Low | Typical | High |
|---|---|---|---|
| Treated pine deck (per m²) | $180/m² | $260 | $350 |
| Hardwood deck — merbau (per m²) | $300/m² | $420 | $550 |
| Hardwood deck — spotted gum (per m²) | $350/m² | $480 | $600 |
| Composite deck (per m²) | $280/m² | $550 | $700 |
| Small deck (15 m², hardwood) | $5,000 | $7,500 | $10,000 |
| Medium deck (25 m², hardwood) | $8,000 | $12,000 | $16,000 |
| Large deck (40 m², hardwood) | $13,000 | $19,000 | $26,000 |
| Deck balustrade / railing (per m) | $150/m | $280 | $450 |
Timber vs composite decking in Brisbane: treated pine is the cheapest board and needs the most upkeep; merbau and spotted gum are the hardwoods most Brisbane decks are built in, oiled every year or two; composite costs about what hardwood does per square metre but is never oiled, and the saving is in the years after. The frame under all four is the same, so the board choice is most of the per-metre difference.
What moves a decking quote in Brisbane:
- Height: a low-set deck is the base; an elevated deck needs bigger posts, bracing, balustrade and often an engineer.
- Size and shape: per-metre rates fall on a plain rectangle and rise with curves, cut-outs and multiple levels.
- Board and fixing: hardwood with concealed fixings is slower than face-screwed pine.
- Ground and footings: concrete footings into sand, clay or rock, and the number of posts, sit under every quote.
- Extras: stairs, balustrade, a pergola, lighting and a privacy screen are priced on top.
For a decking quote in Brisbane that compares, give the square metres, the height off the ground, the board you want and whether stairs or balustrade are needed.
What Affects Decking Costs in Brisbane
Pine, hardwood or composite
Pine is the budget board, at a typical $260 a square metre. Among the hardwoods, blackbutt runs $330–$620, between merbau and spotted gum. Composite costs more than merbau at the typical price ($550 against $420), and capped, solid-core boards of the premium kind reach $450–$900. What composite saves is the oiling, every year the deck stands.
The 10 square metre test
Brisbane City Council's test has four parts: the deck is unroofed, stands no higher than 1 m above natural ground, covers 10 square metres or less in plan, and has no side over 5 m. Pass all four and no building approval is needed; fail one and you will need a licensed building certifier. Homes in the Traditional building character overlay may need planning approval as well, so check your property before drawings are paid for.
A roof over the deck
A basic timber or aluminium pergola over the deck adds $5,000–$15,000. Queensland's small-structure exemption never covers a roofed deck, so any covered deck goes through building approval. Brisbane sits in Wind Region B, which borders the cyclone region, and properties there must be designed to resist weakened tropical cyclones, so expect a roof to come with tie-downs and footings to suit.
Raised floors, stairs and rails
A deck that meets a raised floor costs more to frame: the high-set surcharge is $50–$180 a square metre on top of the board rate. A full flight of stairs is $1,000–$4,500, while a low deck with a couple of treads is priced per step at $180–$400. Once the floor is more than 1 m above the ground the building code calls for a balustrade, at $150–$450 a lineal metre.
Humid summers and timber upkeep
In the NCC climate map Brisbane is zone 2, warm and humid in summer, and the wet season is long: December, January, February and March each average upward of 135 mm (BOM averages). Timber swells and shrinks through that cycle, so board gaps and airflow underneath matter. A clean and two coats costs $15–$45, well under a full sand and oil at $25–$60, if you catch the finish before it fails.
QBCC licence and deposit caps
Queensland draws its licensing line at $3,300: a deck valued at that or more has to be built under a QBCC licence, and above $3,300 a written contract and the home warranty premium are both required. The deposit can be up to 10% on work from $3,301 to $19,999, and 5% on work over $20,000. A typical medium deck, near $12,000, sits in the lower bracket; the top of the large-deck band ($26,000) is past the upper line.
How to Save Money on Decking Cost in Brisbane
Frequently Asked Questions — Decking Cost in Brisbane
Our Methodology
These are independent estimates from public cost guides, marketplaces and industry rate data, and no tradesperson can influence them, so always get a few quotes. Last reviewed October 2026. Read our full methodology →