Perth Decking Cost Calculator.Know what it should cost in Perth.
Tailored to the Perth, WA market, with local pricing adjustment applied automatically. A few quick questions, no obligation.
A new deck in Perth typically costs between $4,725 and $29,400 in 2026, with most projects landing around $11,550.
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Where is the project?
Enter your postcode so we can apply local pricing.
Current estimate: $4,800 to $29,800, likely midpoint $11,700, for Decking in Perth.
- LocationPerth
- Deck size in m²25 m²
- Decking materialMerbau
- When are you hoping to start?In 3–6 months
What goes into the number.
We start with a per-m² merbau rate and adjust by your chosen material, area and complexity. Add-ons like pergola or balustrade stack on top.
- Deck area and height above ground.
- Material — composite is most expensive per m² but lowest maintenance.
- Whether engineering and council approval are required (decks over 1 m typically need approval).
- Stairs, balustrades and roofing over the deck.
Decking in Perth.
Perth pricing has been moving upward with mining-driven labour competition; trades can be harder to secure for smaller residential jobs.
Perth pricing for a new deck runs about 5% above the national average of $11,000.
| City | Typical range |
|---|---|
| Sydney | $5,040–$31,360 |
| Newcastle | $4,590–$28,560 |
| Central Coast | $4,635–$28,840 |
| Melbourne | $4,860–$30,240 |
Frequently asked questions
How much does a new deck cost in Perth?
In Perth, a new deck typically costs between $4,725 and $29,400 in 2026, with most projects landing around $11,550. Pricing varies with size, finish level, complexity and your specific site.
Do I need council approval for a deck?
Most states require approval for decks above 1 m off the ground or with structural impact. Low-level decks attached to a dwelling can often be built as exempt or complying development.
Hardwood vs composite — which is better?
Hardwood looks better and ages naturally but needs oiling every 1–2 years. Composite has higher upfront cost but minimal maintenance and a long, predictable lifespan.
How long does it take to build a deck?
A straightforward ground-level deck is usually built in under a week once materials are on site. Elevated decks, stairs, balustrades or a roof can stretch the build to two or three weeks, and any approval process runs before construction starts.
Do I need a licensed builder for a deck?
In most states, decking work above a value threshold must be carried out by a licensed builder or carpenter, and elevated decks often need engineer-certified footings and framing. Balustrades on decks 1 m or more above ground must meet the National Construction Code. Use licensed trades and ask for compliance documentation at handover.
What's usually included in a decking quote — and what isn't?
A standard quote covers footings, subframe, decking boards, fixings and labour. Commonly excluded items are demolition of an old deck, site levelling, engineering drawings, council fees, balustrades and the first coat of oil or stain. Ask each builder to itemise inclusions so you can compare quotes like for like.
How do site conditions affect the job?
Sloping blocks, tight access, rocky or reactive soil, and building over existing concrete all change the footing design and labour involved. A deck on a steep site may need engineered posts and bracing, which adds significant cost. Have builders inspect the site before quoting rather than pricing off photos.
See local pricing for your city
Each city page includes a local pricing adjustment, assumptions and FAQs.
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