Wooden deck beside a swimming pool, surrounded by greenery and a fence.

How Much Does a Deck Cost in Perth

Published on 24 Sep 2025

by Mike Tuhaka

Key takeaways

Deck costs in Perth vary A$400 to $600+ per m², depending on material.
Labour shortages and material inflation in 2025 have raised costs by 20 to 30%.
Expect $15,000 to $25,000 for small to medium decks and $25,000+ for high-end builds.
Transparent quotes (with materials, labour, and extras separated) are critical in a confusing market.
A quality deck is a lifestyle upgrade and a financial investment, often adding 5 to 10% to property value.

Why Costs Vary

Deck pricing depends on several factors:

Material choice: Treated pine vs. hardwood vs. composite.
Size: More area = more boards, labour, and substructure.
Design complexity: Multi-level decks, stairs, balustrades, and integrated lighting increase costs.
Labour: Perth’s shortages have pushed installation costs up to $170 to $180 per m².
Site conditions: Sloping land, excavation, or access issues raise site prep costs.

Decking Costs by Material (Supply + Install)

Material	Cost (per m²)	Notes
Treated Pine	$200 to $250	Budget option, shorter lifespan
Hardwood Timber	$320 to $500	Jarrah, Merbau, Spotted Gum, Blackbutt
Composite	$350 to $600	Trex, ModWood, NexGEN, long warranties
Aluminium/PVC	$600 to $1,000+	Ultra-durable, fire/salt resistant, niche use

A structural framework alone can add ~$225 per m² to any deck.

Labour and Installation Costs

Materials: Boards, screws, and finishes ($70 to $200/m² for composites; $20 to $30/board for hardwoods).
Pre-oiling treatment: Protects timber before install.
Fixings: Stainless steel screws and hidden fasteners.
Installation: $50 to $150/m² depending on complexity.
Substructure: Joists, bearers, footings, often the hidden bulk of the cost.

Cost by Deck Size

Deck Size	Typical Cost (Installed)	Example Use
Small (10 to 20 m²)	$4,000 to $7,000	Compact patio or balcony
Medium (30 to 40 m²)	$7,000 to $15,000	Alfresco entertaining area
Large (50 m²+)	$15,000 to $25,000+	Family backyard or pool surround

High-end projects with premium hardwoods or composites, multiple levels, and integrated features can exceed $30,000 to $40,000.

Maintenance Costs Over Time

Material	Ongoing Needs	20-Year Maintenance Cost
Treated Pine	Regular sealing/oiling	$8,000 to $12,000
Hardwood (Jarrah, Merbau, etc.)	Oil every 6 to 18 months	$6,000 to $10,000
Composite	Hose down, occasional wash	$1,000 to $2,000
Aluminium/PVC	Minimal	<$1,000

Why a Deck Is an Investment

Lifestyle: Outdoor living is central to Perth’s climate and culture.
Property value: A well-built deck can add tens of thousands of dollars, or 5 to 10% of resale value.
Saleability: Homes with decks sell faster and appeal to more buyers.

Experts suggest investing 10 to 15% of your home’s value into outdoor living for maximum return.

Conclusion

Decking in Perth is a significant investment, but one that pays off in lifestyle and property value. Prices vary by size, material, and design complexity, but with transparency and the right material choice, homeowners can feel confident their deck will last.

Rule of thumb:

Budget-conscious: Treated Pine ($200 to $250/m²).
Classic and premium: Hardwood ($320 to $500/m²).
Low-maintenance future-proofing: Composite ($350 to $600/m²).

A clear, well-structured quote helps homeowners choose the right deck without surprises.

Mike Tuhaka

Mike Tuhaka runs Perth Landscape Guys. He and his team design and build outdoor spaces right across Perth, from Currambine down to Mandurah, including paving, decking, retaining walls, artificial grass, lawn and reticulation. They are preferred installers for Freo Stone, Eco Stone and Remastone, and have worked on commercial projects for Murdoch University and Parsons Group. What customers mention most is Mike’s honest advice and the regular updates from the first plan to the final clean up.

We are extremely happy with the work that Michael, Mike, Sam and their team completed at our house. They re-did our whole front yard and were the easiest to work with throughout the entire project. Nothing was ever a drama for them and their experience came in handy when the project had to pivot mid way through. Would definitely recommend for large residential projects, and would have them back again.

Chris Prell

We had a fabulous experience with Perth Landscape Guys from the start to the end. It was a difficult job given they had to fill in our swimming pool then deck the entire area. Access was terribly hard given we have an internal courtyard with no external access. Despite this they managed the process so well. They communicated throughout and very hands on. We could not fault their service. We are so happy with the outcome.

Debra Hart

Brilliant! We could not be happier with our amazing outdoor space. Mike and his whole team did not disappoint. From the first point of contact with Michael and all the way through with each of the crew, all were excellent. Bonnie’s skill and workmanship must be commended. We are extremely happy with the transformation and new alfresco space, boardwalk along with the front garden beds and retaining walls. Throughly recommend engaging the Landscape Guys!

Bryony

I recently had my backyard transformed and couldn't be happier with the results. I started with a fairly 'arm-wavey' design, but the team successfully converted it into reality including limestone walls, paving, grass and a new reticulation system. Sam was excellent to deal with, he checked in every morning to discuss progress and provided clear options whenever issues arose. The entire project was completed quickly and on budget.

Samuel Bayford

Perth Landscape Guys carried out a large backyard renovation for us, including pavers, turf and pool landscaping. Every member of the team provided exceptional service, went above and beyond to make sure we were happy with the final product and were great to deal with. Mike, Jamie, Chris, Sam and James did an absolutely excellent job - would give more than 5 stars if I could!

Joseph Restifo

I am very impressed with the way the work was done on my garden, and the results. From the initial quote through demolition and removal of existing landscaping, construction of a small wall, extending brick paving, cladding a fence, installation of artificial turf and final clean up, the work was promptly and immaculately done. The price seemed reasonable, comparable with a couple of other quotes. I'm now enjoying going outside!

Christine W

We got Mike and the guys to do the landscaping around our new build house. The job had many different parts to it - paving, laying turf, tree planting, security gate installation etc. We're very happy with the result - job complete on time and to a high standard. We have no hesitation in recommending them for any landscape project.

Tadhg O'Reilly

Thanks to Mike and the Perth Landscape Guys awsome job and a special thanks to Chris and Joel for the paving and front limestone wall we are proud of our outdoor area Thank you

Shirley Hemley

We engaged the Perth Landscape Guys to enhance our pool surround (complete the paving, fencing, etc) following the installation of our pool, and are incredibly impressed with the results. From planning to completion, the team has gone above and beyond to bring our project to life, and ensured every detail met (and exceeded) our expectations. A huge thanks to the entire team! We highly recommend their services.

Lewis Taylor

Happy with our paving job. The guys were on time. helpful and when I had a minor issue on completion they didn't hesitate to come and rectify. Highly recommend them

Mario Samarelli

How Much Does a Deck Cost in Perth

Key takeaways

Why Costs Vary

Decking Costs by Material (Supply + Install)

Labour and Installation Costs

Cost by Deck Size

Maintenance Costs Over Time

Why a Deck Is an Investment

Conclusion

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