Jarrah Decking Cost Per Square Metre Perth
By the Timber Decking Cost Guides Editorial Team — reviewed for accuracy. Last updated November 2026. This article is for informational purposes and reflects typical market pricing; verify current details with licensed contractors before starting any project.
Perth jarrah decks run $250-$400 per square metre installed — the Western Australian hardwood where the local mill supply and the Perth labour market price the total.
This guide prices the Perth build: the per m2 supply band, the frame and fixing scope, and the WA lines a written quote should contain.
Jarrah Decking Cost Per Square Metre Perth — At a Glance for AU
A jarrah deck in Perth runs A$310–A$500 per square metre installed — the board grade and the WA supply carry the range. This is a realistic planning number for Australia in 2026, not a marketing low-ball.
| Line Item | Typical Range (AUD) | What Drives It |
|---|---|---|
| Jarrah boards 86x19mm supplied | A$88–A$130 | The WA mill supply at the grade |
| H3 pine frame and joists | A$19–A$31 | The subframe at the code path |
| Stainless or coated fixings | A$10–A$22 | The fixing scope at the coast |
| Install labour | A$150–A$220 | The licensed builder at the WA rate |
| Sand and first oil coat | A$7.5–A$15 | The handover surface scope |
Understanding Jarrah Decking Cost Per Square Metre Perth
The supplied boards run $70-$105 per square metre — the WA mill grades deciding the band at the premium species. The installed totals run $250-$400 — the local labour and the coastal compliance pricing the complete build.
The jarrah at the durability class 2 and the rich red-brown grain serving the Perth character builds — the diminishing old-growth supply pricing the premium honestly. The H3 pine frame at $15-$25 serving the code; the jarrah subframe at $50-$80 at the premium. The coastal scopes at the stainless fixings — the Fremantle and the coastal suburbs at the corrosion line.
What Moves the Price Up or Down
The price moves with the mill grade, the supply scarcity, the frame spec, and the WA labour window.
| Factor | Cost Impact | Detail |
|---|---|---|
| Mill grade and cut | +15-30% | The select against the standard |
| Supply scarcity | +20-40% | The diminishing old-growth supply |
| Frame spec | +10-20% | The jarrah against the pine |
| Coastal corrosion scope | +10-20% | The stainless at the coast |
| WA labour window | +10-20% | The summer build rush |
Perth Jarrah Supply Options
Two paths serve the local deck — the new mill, the reclaimed trading.
| Option | Description | Best For | Cost Level |
|---|---|---|---|
| New-mill jarrah | The premium WA supply | The character builds | $70-$105 per m2 |
| Reclaimed jarrah | The salvaged boards at the grain | The heritage builds | $60-$90 per m2 |
| WA mixed hardwoods | The marri and the karri blend | The budget path | $50-$75 per m2 |
The new-mill serving the character builds — the reclaimed serving the heritage at the honest grain.
Three Realistic Project Scenarios
The Perth character deck — A$9,380–A$15,000
A 30 square metre jarrah deck at the pine frame.
- Boards and fixings — A$2,620–A$3,940
- Frame and labour — A$6,750–A$11,060
Why this matters: The character path serves the build — the 30 m2 at the $9,700 total with the premium grain priced.
The coastal Fremantle deck — A$13,120–A$18,750
A 35 square metre deck at the stainless scope.
- Boards and fixings — A$3,060–A$4,590
- Frame, labour, and rail — A$10,060–A$14,160
Why this matters: The coastal path serves the view — the stainless fixings pricing the $12,700 total.
The reclaimed heritage build — A$8,500–A$13,120
A 25 square metre deck at the salvaged jarrah.
- Reclaimed boards — A$1,880–A$2,810
- Frame and labour — A$6,620–A$10,310
Why this matters: The reclaimed path serves the heritage — the salvaged grain at the $8,600 total with the character honestly.
The scenarios share the structure: the mill supply setting the band, the coastal scope at the corrosion, and the labour carrying the total.
Sample Budget Breakdown
The table below shows how a typical mid-range budget for jarrah decking cost per square metre perth distributes across materials, labor and compliance in Australia. Adjust the percentages to your own scope before using it as a savings target.
| Category | Estimated Amount | Explanation | Optimization Tip |
|---|---|---|---|
| Boards and fixings | A$1,880–A$4,590 | The supply at the grade | The single mill batch |
| Frame and licensed labour | A$6,620–A$14,160 | The builder at the footprint | The WA day rate |
| Sand and first coat | A$190–A$520 | The handover surface | The oil cycle after |
| Contingency | A$380–A$1,120 | The site findings | The 10% at the frame open |
Every figure above is an indicative 2026 market range. Final quotes move with site conditions, contractor availability and the exact specification you lock in.
From Quote to Completion: the Typical Timeline
Most jarrah decking cost per square metre perth projects follow the same five-stage rhythm. Knowing the calendar before you sign prevents the two classic frustrations — feeling rushed into a deposit, and being surprised by a mid-project gap while materials arrive.
- Timber delivery and acclimatisation — 1-2 weeks
- Frame and board install — 1-2 weeks typical
- Final oil coat and handover — 2-4 weeks after install
- Design and quoting — 2-4 weeks
- Timber delivery and acclimatisation — 1-2 weeks
Smart Ways to Control the Budget
Cost control on jarrah decking cost per square metre perth is mostly about scope discipline and timing. These are the strategies that consistently deliver the largest savings:
Price the species by the lifespan, not the sticker
Merbau at $55-90 per square metre supplied against the treated pine at $25-40 — the 25-year hardwood lifespan against the 10-15 year pine cycle. The total ownership math pricing the honest comparison over the decades, not the build day.
Advantages:
- Directly reduces the controllable parts of the quote
- No impact on quality or compliance when scoped correctly
Disadvantages:
- Requires the decades framing at the timber yard.
- Requires planning lead-time you may not have on urgent timelines
Buy boards in the one moisture-stabilised batch
The single-batch supply at the consistent moisture content pricing the even gaps — the mixed batches shrinking unevenly and producing the irregular spacing. The batch number recorded at the delivery docket.
Advantages:
- Directly reduces the controllable parts of the quote
- No impact on quality or compliance when scoped correctly
Disadvantages:
- Takes the full-quantity order at the one delivery.
- Requires planning lead-time you may not have on urgent timelines
Price the frame separately from the boards
The H3 treated pine frame at $15-25 per square metre against the hardwood subframe at $40-70 — the pine frame at the code-approved path under the merbau surface. The frame spec quoted line by line, never bundled.
Advantages:
- Directly reduces the controllable parts of the quote
- No impact on quality or compliance when scoped correctly
Disadvantages:
- The frame and the boards priced as separate lines at the quote.
- Requires planning lead-time you may not have on urgent timelines
Time the install for the shoulder season
The spring and autumn install windows at the standard rates — the summer rush pricing the 15-25% premium at the peak. The winter quoting serving the honest availability and the off-season rate cards.
Advantages:
- Directly reduces the controllable parts of the quote
- No impact on quality or compliance when scoped correctly
Disadvantages:
- Requires the booking at the quiet season.
- Requires planning lead-time you may not have on urgent timelines
Permits, Rules and Safety
The WA decks over one metre at the permit scope — the pool zones at the WA compliance. The standard ground-level decks at the exempt path at most Perth councils.
- (‘Setback and boundary review’, ‘$0-150’, ‘The boundary clearances at the site plan — the attached structures at the easement and the setback rules.’, ‘The site plan checked at the quoting stage.’)
- (‘Deck permit’, ‘$100-400 typical in AU councils’, ‘The structural review at the footings, the frame, and the balustrade code — the over-1-metre heights and the pool zones always at the permit scope.’, ‘The unpermitted deck pricing the resale disclosure.’)
- (‘Pool zone compliance check’, ‘$0-250’, ‘The pool-adjacent decks at the CPRC non-climbable zone review — the barrier code at the pool vicinity scope.’, ‘Applies at every deck within the pool zone.’)
Maintenance and Long-Term Ownership Costs
The project price is only the first line of the budget. These recurring items are what owners in Australia actually spend money on after the crews leave:
| Task | Frequency | Typical Cost | Why It Matters |
|---|---|---|---|
| Deck oil | Every 12-18 months | $4-8/sq m | The timber hydrated at the oiling cycle — the neglect pricing the grey restoration at the multiple of the maintenance. |
| Fastener and joist check | Yearly | $0-150 | The screws and the hangers at the movement cycle — the structural issues caught at the walk. |
| Inspection walk | Yearly | $0-250 | The structure, the fasteners, and the gaps walked at the season — the issues caught at the early stage. |
| Deck wash | Yearly | $100-300 | The surface grime and the mildew at the gentle wash — the coating adhesion protected at the clean surface. |
The 12-18 month oiling at $4-$8 per square metre — the Perth sun at the honest cycle. The annual inspection at $0-$250 catching the fastener and the movement issues early.
Frequently Asked Questions
How much does jarrah decking cost in Perth?
Perth jarrah runs $250-$400 per square metre installed — the boards at $70-$105 supplied from the WA mills.
Is jarrah decking expensive?
The jarrah at $70-$105 supplied sitting at the premium band — the diminishing old-growth supply pricing the species honestly against the merbau imports.
Is reclaimed jarrah cheaper?
The reclaimed at $60-$90 running below the new-mill supply — the salvaged grain at the character premium and the sizing labour at the honest variance.
How long does jarrah decking last?
The 25-40 years at the maintained jarrah — the durability class 2 serving the WA climate honestly. The oiled surfaces at the full lifespan.
Does jarrah decking need oiling?
Yes — the 12-18 month cycle at the Perth sun. The uncoated jarrah greying at the silver finish; the oiled surfaces at the red-brown character.
Summary
Planning jarrah decking cost per square metre perth in Australia starts with an honest range — A$310–A$500 for the scenarios most households actually install — then works backwards through the mill supply that sets the band, the coastal scope at the corrosion, and the labour that carries the total.
The new-mill jarrah serving the character builds — the reclaimed serving the heritage at the honest grain. Collect at least three itemised quotes, confirm the permit path before signing, and hold a 10–15% contingency for site surprises. Those three habits protect more budget than any product choice.
