Free Online Deck Cost Calculator · Perth 2026

WHAT DOES A DECK
COST IN PERTH
RIGHT NOW?

Use our free online decking cost calculator to get an instant estimate — timber or composite, all sizes, all-in inc. GST. Select your material and deck size below to see what your build should cost.

Every formal quote we've sent has landed within the ranges shown here. This isn't a marketing estimate — it's the same deck cost calculator we use internally.

Site conditions, height, and balustrades affect the final number. Start my project to get a site-specific quote.

Start my project How decks really get priced

How much does a deck cost in Perth in 2026?

The short answer.

Most Perth decks land between $10,000 and $40,000 all-in, inc. GST — starting from around 20m². Merbau hardwood sits at the lower end — composite typically runs higher. Per square metre: Merbau is around $390–$480, Evalast composite $475–$580, premium boards (Trex, Pioneer) $560–$670.

All of that includes the subframe, delivery, project management and bin hire. Balustrades, stairs, pergolas and council permits aren't in those numbers — they're scoped separately because the range is too wide to bundle honestly.

01

How much does an Endure Deck cost?

Projects start from $18K. Most sit between $18K and $40K. Complex outdoor transformations can reach $130K and beyond.

02

How does the process work?

Design first, then build. Discovery video call → First Pass Proposal → site meeting → build. We don't commit a nail until the plan is right.

See the full process

03

Do you just build decks?

Decks are our bread and butter, but we offer full project design and build. We can project manage complete outdoor transformations — most of our projects include multiple elements, not just a deck.

Free online decking cost calculator

Get your online estimate

Merbau

Warm red-brown. Natural oil content. Proven Perth performer. Best value hardwood.

35 m²
20 m²80 m²

Deck under 20m²? Contact us — we'll either scope it or point you in the right direction.

Your online estimate — all-in inc. GST (boards + subframe + design + delivery)

$14K – $18K

Merbau · 35 m² · includes subframe, delivery & bin hire

Handypay — flexible payment plans for home improvement

What could this cost me?

Handypay

Your estimated build

$14K – $18K

Adjust deck size and material above

Over a period of 5 years

With repayments every

Estimated weekly repayments

$71–$88

per week, indicative

Apply with Handypay

Interest rate from 6.57% p.a. Comparison rate 7.19% p.a.*

Indicative only. Not financial advice. Get your quote first, then speak to Handypay to confirm your rate.

2026 Perth deck pricing reference — inc. GST

All-in estimates by material and size

Includes subframe, delivery, and bin hire. Excludes balustrades, pergolas, stairs, and council permits. Computed from the same rates used in every Endure quote — every formal quote we've sent has landed within these ranges. Contact us for a site-specific number.

Timber hardwood decking — Perth 2026 prices

Material20m²30m²40m²50m²
MerbauMost popular$10K–$13K$13K–$16K$16K–$20K$19K–$23K
JarrahWA native$12K–$15K$16K–$20K$20K–$25K$24K–$29K
Spotted GumStriking grain$13K–$16K$17K–$22K$22K–$27K$26K–$32K
BlackbuttContemporary$13K–$16K$18K–$22K$22K–$28K$27K–$33K

Composite decking — Perth 2026 prices

Material20m²30m²40m²50m²
Evalast InfinityRecommended$12K–$16K$16K–$20K$20K–$25K$24K–$30K
Trex TranscendUS-made$15K–$19K$20K–$25K$25K–$32K$31K–$38K
MoistureShieldPool-safe$14K–$18K$19K–$24K$24K–$30K$29K–$36K
Evalast PioneerPremium$16K–$20K$21K–$27K$27K–$34K$33K–$41K

What's included

Standard inclusions & add-ons

Standard inclusions (every build)
Project managementIncluded
7 year structural warrantyIncluded
Site clean-upIncluded
After care supportIncluded
20 Year Build MethodIncluded
Add-ons (ranges — quoted separately)
Stairs (per flight)POA
BalustradePOA
Deck lighting$800–2,000
Pergola / shade structure$5,000–9,000
Bench seat / planter box$1,800–3,500
Site prep / earthworksPOA

Price factors

What pushes the price up

Height & elevation

Every 300mm of deck height adds bracing, blocking, and labour. An elevated deck over 600mm costs noticeably more than a ground-hugging slab replacement.

Site access

Tight side passages, steep blocks, or no vehicle access means hand-carrying materials. That adds time and cost.

Balustrades & stairs

Not included in the calculator. Glass balustrades can add $8K–$15K to a project. Timber post-and-rail starts at $2,800.

Subframe upgrade

Coastal or high-moisture sites benefit from aluminium subframes over the standard timber H4. Worth it for beachside suburbs or shaded understorey areas.

Council permits

Most Perth decks under 500mm high don't need a permit. Higher decks or coastal overlays may require a building permit — typically $600–$1,200.

Irregular shapes

L-shapes, curves, and wraparound decks increase cutting waste and labour time. Straight rectangular builds are the most cost-effective footprint.

Not included in the estimates above

  • Balustrades & glass panels
  • Pergola or roof structure
  • Lighting installation
  • Electrical / outdoor power points
  • Landscaping or garden tie-ins
  • Council building permit (if required)
  • Demolition of existing structure
  • Concreting or footings beyond standard piers

Go deeper — related guides

Cost & Value

How decks really get priced — and what you're paying for

9 min read

Materials

Timber vs composite — the honest question to ask yourself first

8 min read

Longevity

How long should a deck actually last in Perth?

8 min read

Pricing FAQ

Common questions about deck costs

Ready to get a real number?

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NO OBLIGATION.

We measure your site, talk through materials, and give you a fixed-price quote. No surprises on day one or day thirty.

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