5.0

★★★★★

Google Reviews

Custom Decks,
Built to Last.

A deck changes what your outdoor space can do. It levels a sloped block, extends a living area, creates a defined entertaining zone, and, when built well, adds genuine property value.

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Fixed-price guarantee

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Council approvals handled

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10-year workmanship warranty

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Finance via Zip Pay

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No obligation. Takes less than a minute.

35+

Years in business

10-Year

Workmanship warranty

18K+

Projects completed

$20M

Public liability cover

Custom Deck Design and Installation – Hardwood, Composite, and BAL-Rated Builds Across Australia

A deck changes what your outdoor space can do. It levels a sloped block, extends a living area, creates a defined entertaining zone, and, when built well, adds genuine property value.

Outside Concepts builds custom decks across Australia. Our outdoor deck builders work in hardwood and composite, on flat blocks and challenging slopes, in standard suburban settings and bushfire-designated zones.

Outside Concepts builds custom carports across Australia. Our franchise owner-operated model means a single experienced team manages your project from design through to handover. We offer a fixed price guarantee on every carport build — if something costs more than anticipated, we wear it. Finance options are available through Zip Pay for homeowners who’d prefer to spread the cost. Backed by 35 years of experience, HIA membership, and $20 million in public liability cover, we’re a builder you can rely on.

Our Deck Installation Service

Deck installation at Outside Concepts is a structured, managed process. What our service covers:

Site assessment and subgrade evaluation
Substructure design and footing specification
Bearer and joist framing
Deck board installation (screw-fixed for all hardwood and composite builds)
Perimeter detailing, stairs, and balustrade where needed
Council approvals and compliance documentation
A full handover walk-through

Screw-fixed deck installations are our standard for all deck boards. Nail-fixed boards lift, split, and loosen faster under Australia’s seasonal temperature range. The detail matters.

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Accredited & trusted by

Decks We Build

Custom-designed decks built for outdoor living, entertaining and lasting enjoyment.

BAL-Rated Deck Construction for Bushfire Zones

Properties in designated bushfire-prone areas across Australia, particularly in Victoria's and SA's

Hardwood Deck

Beautiful, durable Merbau decking that brings natural warmth and timeless style to your outdoor space.

Checkout Our Gallery

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Adelaide Timber Decking, hardwood recycled deck builders SA

Looking for the ultimate guide on Geelong timber decks? Here it is.

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Adelaide Outdoor Patio, best outdoor lights for patios on wooden decks. Outdoor lights for your backyard patio are a great way to entertain

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Outdoor Deck Builders Adelaide, cost of decking. Can you build a new timber deck in a bushfire prone area in Adelaide?

Outdoor Deck Builders – Hardwood Expertise

Our deck builders work with the full range of quality Australian hardwoods:

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Included in every build

Jarrah – Premium WA hardwood with rich red tones. Excellent natural durability and termite resistance.

River Red Gum – A distinctive Australian species with dramatic figuring and strong structural properties.

Spotted Gum – Hard, durable, and visually striking. One of Australia's most popular decking species.

Merbau – Widely used, cost-effective, and naturally resistant to rot and insects.

Blackbutt – A clean, light-toned hardwood with excellent durability and a contemporary look.

Treated Pine – The most cost-effective option for substructure framing or budget-sensitive projects.

Trusted Across Australia

5.0

★★★★★

Google reviews

      EXCELLENT  
   Based on 42 reviews 
    
 
 
 
   
 
 
       Posted on Google  
   
   Glenn Murphy 
 
 
 
 Trustindex verifies that the original source of the review is Google. Had a new verandah installed. It was a replacement for an existing verandah that needed to be demolished. Because of the limitations imposed by our spouting a novel way of attaching it to the house was required. Of all the companies we had quotes from, Kose's was the only one that came up with a goosneck arrangement which provided a verandah that met all our requirements for looks and functionality. The workmanship is excellent and we are very happy with the result.
  
 
      Posted on Google  
   
   Michael Hall 
 
 
 
 Trustindex verifies that the original source of the review is Google. The service provided was quick, informative, respectful and focused on providing a project design that suited our needs.
  
 
      Posted on Google  
   
   Phil Hoenig 
 
 
 
 Trustindex verifies that the original source of the review is Google. Absolutely happy with Kose's work.
  
 
      Posted on Google  
   
   Brett Kizan 
 
 
 
 Trustindex verifies that the original source of the review is Google. Great support on getting some ideas and knowledge of what we could build in a tight space.
  
 
      Posted on Google  
   
   Raymond Domingo 
 
 
 
 Trustindex verifies that the original source of the review is Google. We recently had a Large Colour Bond Patio ordered with OUTSIDE CONCEPTS PTY LTD in Melbourne.....The Quality and Workmanship were Outstanding, with the Best Quality materials used, not forgetting the TOP Tradesmen used, to do  the job. We are Very satisfied with this Project, and will highly recommend them to anybody wanting a Good job done, at a reasonable price. The Manager  Kose, who handled the job from start to finish, was extremely Professional, Very knowledgeable, and Patient, especially  while dealing with the Local City Councils for Permits etc We wish them all the very Best in the future. Update 17 May 2026 : I recently had an issue with the extension Patio, so I contacted Kose, from OUTSIDE CONCEPTS, for assistance. Kose contacted me promptly, with all the advice I required, and a solution to the problem.! Thank you Kose for all your help you gave me, .....This proves that your 'After Sales Service " is Rock Solid , and the Best I have received so far. wishing you all the Best for the future.
  
 
      Posted on Google  
   
   Clare Graf-Mitchell 
 
 
 
 Trustindex verifies that the original source of the review is Google. While we unfortunately were not able to have a carport built by Custom Carports and Pergolas due to council regulations, the team here did so much fantastic work for us that I wanted to write a review. Everyone I spoke to here was courteous, friendly, and helpful. They understood what we wanted, knew the right questions to ask our city council to figure out what we could and could not do, and they communicated the result to us sensitively. I would be delighted to engage with this company again in the future if I had the opportunity. Thank you very much!
  
 
      Posted on Google  
   
   Jamie 
 
 
 
 Trustindex verifies that the original source of the review is Google. Cannot speak highly enough of Kose and the team! From initial contact through to completion my experience was fantastic. Kose was always in hand for any queries I had and would keep us thoroughly updated at every stage. Our backyard is now a lot more homely with the finished product delivered with care and skill. To anyone looking for a pergola look no further!

Outdoor Deck Builders – Hardwood Expertise

Our deck builders work with the full range of quality Australian hardwoods:

Jarrah – Premium WA hardwood with rich red tones. Excellent natural durability and termite resistance.
River Red Gum – A distinctive Australian species with dramatic figuring and strong structural properties.
Spotted Gum – Hard, durable, and visually striking. One of Australia’s most popular decking species.
Merbau – Widely used, cost-effective, and naturally resistant to rot and insects.
Blackbutt – A clean, light-toned hardwood with excellent durability and a contemporary look.
Treated Pine – The most cost-effective option for substructure framing or budget-sensitive projects.

Custom Deck Builder – The Specification Walk-Through

When you commission a custom deck builder at Outside Concepts, here’s what the specification process covers:

Deck footprint and height – Freestanding, attached, or split-level.
Substructure specification – Bearer and joist sizing for your span and load.
Board species or composite product selection – With explicit timber vs composite tradeoff discussion.
Board orientation and pattern – Straight, herringbone, diagonal.
Perimeter options – Edge boards, fascia, and integrated planter boxes.
Stairs and balustrade – Design, material, and compliance with NCC height requirements.
Outdoor deck lighting if required (done by our outdoor deck builders).

Timber vs Composite Decking – Explicit Comparison

Timber offers natural beauty, unique grain variation, and a proven track record. It requires annual oiling and periodic maintenance to perform over its lifespan. Jarrah, Spotted Gum, and Merbau all perform well in Australian conditions with proper care.

Composite decking (recycled timber fibre and plastic) eliminates the maintenance cycle almost entirely. UV-stable, fade-resistant in quality products, and increasingly specified for Australian residential builds where long-term ownership cost matters more than upfront price.

BAL-Rated Deck Construction for Bushfire Zones

Properties in designated bushfire-prone areas across Australia, particularly in Victoria’s and SA’s

peri-urban fringe, require construction under the Bushfire Attack Level (BAL) framework of AS 3959. BAL ratings determine which materials are permissible. Not all deck materials comply with every BAL rating.

When working with a deck builder, we’ll specify and build BAL-rated deck designs where required, ensuring full compliance without sacrificing structural quality or aesthetics.

We’ve completed BAL-rated builds at multiple rating levels. Talk to our team if your property is in a designated zone.

Frequently Asked
Questions

How much does decking cost per square metre?

Costs vary by species, composite product, substructure complexity, and site conditions. Treated pine substructure with Merbau boards is the most common mid-range option. Composite is higher upfront, lower over time. We provide a fixed, detailed quote after your site assessment.

Composite vs hardwood, which lasts longer?

Quality composite decking typically outperforms hardwood on longevity when maintenance is factored in. Without regular oiling, hardwood degrades faster. With proper care, premium hardwoods like Jarrah and Spotted Gum match the composite lifespan.

Do I need council approval for a deck?

Approval requirements vary by state, council zone, and deck height above ground. Most decks above 400–600mm from ground level require development approval. We handle this as part of our service.

Can you build a deck on a sloped block?

Yes. Sloped blocks require more complex substructure design and deeper or pier-style footings. We assess your site at the consultation and specify accordingly. Split-level and cantilever designs are both options, depending on your slope and soil.