Decking is a fantastic way to enhance outdoor living spaces, providing a stylish and functional area for relaxation, entertainment, and dining. 

But before you jump into building a deck, it’s important to understand the costs involved. The price of a deck can vary significantly based on factors like materials, size, labor, and location.

In Australia, decking cost per m² ranges from affordable timber options to premium composite decking material prices. Whether you’re considering wooden decking for a natural look or a composite decking material for durability, understanding the cost breakdown can help you budget effectively.

This guide explores the key factors affecting decking prices, helping homeowners and businesses make informed decisions when planning their projects. 

Key Factors Influencing Decking Costs

If you are using a deck estimator or hiring professionals, knowing the real cost of decking per m² in Australia can prevent unexpected expenses and ensure you get the best value for your money.

Several key elements impact the total decking cost per m², from material selection to installation complexity. Here’s what you need to consider before starting your decking project.

1. Material Choice

One of the biggest factors influencing the cost of your deck is the material you choose. In Australia, the most popular options are:

• Timber Decking – Natural and aesthetic, wooden decking provides a traditional look but requires regular maintenance. Common Australian timber options include spotted gum, blackbutt, and merbau. Timber decks can cost between $200 – $1,000 per m², depending on the wood type.

• Composite Decking – Made from a mix of recycled wood and plastic, composite decking material prices in Australia range from $100 – $350 per m². While more expensive upfront, composite decking requires less maintenance and has a longer lifespan.

• PVC Decking – A fully synthetic option, PVC decking costs between $150 – $400 per m², offering high durability with minimal upkeep.

• Aluminium Decking – Extremely durable and weather-resistant, aluminium decking costs $200 – $600 per m² but is less common in residential settings.

Choosing the right material is crucial as it affects the longevity, aesthetics, and maintenance of your deck.

2. Deck Size and Complexity

The larger and more complex the deck design, the higher the decking cost per m² in Australia. A simple rectangular deck is cheaper to install than one with multiple levels, curves, or custom railings.

• Small decks (10 sqm) – Suitable for patios and balconies, costing between $2,000 – $6,000 depending on materials.

• Medium decks (20-30 sqm) – Ideal for small backyard entertaining spaces, ranging from $5,000 – $15,000.

• Large decks (50+ sqm) – Expansive outdoor areas, costing $10,000 – $30,000+, especially if additional features like pergolas or built-in seating are included.

Deck complexity also increases labor costs, as intricate designs take more time and expertise to construct.

3. Labor and Installation Costs

Hiring local professionals can significantly impact your overall decking cost per m². In Australia, labor costs typically range from $50 – $150 per hour, depending on the contractor’s experience and location.

• Basic deck installation – $200 – $500 per m²

• Custom deck with stairs & railings – $500 – $1,500 per m²

• High-end decks with intricate designs – $1,500+ per m²

Using a deck estimator can help determine installation costs based on your deck’s size, material, and complexity.

4. Permits and Approvals

Depending on your location, you may need council approval to build a deck, adding extra costs to your project.

• Building permits – Required for decks above a certain height (usually 600mm in Australia), costing between $200 – $1,500.

• Engineering reports – If your deck is large or has structural complexities, expect to pay $500 – $2,000 for an engineer’s assessment.

• Inspection fees – Some local councils charge $100 – $500 for deck inspections before and after construction.

It’s essential to check with your local council to ensure your deck complies with Australian building regulations. Understanding these cost factors can help you plan your deck effectively, whether you opt for timber decking, composite decking material, or another decking type. 

Investing in quality materials and professional installation ensures a long-lasting and stylish outdoor space.

Decking Material Options & Their Costs

Choosing the right decking material is crucial for durability, aesthetics, and maintenance. 

The decking cost per m² in Australia varies depending on the material, with options ranging from traditional timber decking to modern composite decking material and even aluminium or PVC alternatives. 

Below is a detailed breakdown of popular decking materials and their costs.

1. Timber Decking (Natural & Classic)

Timber decking is a popular choice in Australia due to its natural beauty and classic appeal. It provides a warm, authentic look and is available in various wood types. However, it requires regular maintenance, including sealing, staining, and protection from termites and weather damage.

Types of Timber Decking & Their Costs

While wooden decking offers aesthetic appeal, the total price of a deck increases due to ongoing maintenance. Many homeowners are shifting to alternative materials to reduce upkeep.

2. Composite Decking (Low-Maintenance & Durable)

Composite decking material is an excellent alternative to timber, offering high durability with minimal maintenance. It is made from a combination of wood fibers and plastic, making it resistant to rot, termites, and weather damage.

• Advantages:

• Requires little to no maintenance

• Resistant to warping, cracking, and splintering

• Available in various colors and textures

• Environmentally friendly (often made from recycled materials)

Composite Decking Material Prices in Australia

While composite decking material prices are initially higher than timber, it saves money in the long run due to lower maintenance costs.

3. PVC Decking (Ultra-Durable & Waterproof)

PVC decking is made entirely from plastic, making it highly resistant to moisture and ideal for coastal areas or places with high humidity. It requires virtually no maintenance and lasts longer than timber or composite decking.

• Cost per m²: $150 – $400

• Lifespan: 30+ years

• Pros: 100% waterproof, lightweight, low maintenance

• Cons: Expensive, may look less natural than wood

4. Aluminium Decking (Highly Durable & Fire-Resistant)

Aluminium decking is gaining popularity for its extreme durability, fire resistance, and low maintenance. It's commonly used in bushfire-prone areas or high-end modern home designs.

• Cost per m²: $200 – $600

• Lifespan: 50+ years

• Pros: Fireproof, lightweight, rust-resistant

• Cons: Expensive, limited design choices

5. Bamboo Decking (Eco-Friendly & Stylish)

Bamboo decking is a sustainable alternative to timber, known for its eco-friendliness and high durability. It is treated for weather resistance and termite protection.

• Cost per m²: $100 – $300

• Lifespan: 20+ years

• Pros: Sustainable, stylish, durable

• Cons: Needs occasional sealing and maintenance

Final Comparison of Decking Costs per m² in Australia

Choosing the Right Decking Material for Your Budget

• For Budget-Friendly Decking: Treated pine is the most affordable option but requires regular maintenance.

• For Low-Maintenance Decking: Composite decking and PVC decking are best, though they have a higher upfront cost.

• For High-End & Durable Decking: Aluminium and bamboo decking offer longevity and premium finishes.

Using a deck estimator can help homeowners compare costs before making a final decision. Considering the decking cost per m² in Australia, homeowners must weigh their budget, maintenance expectations, and long-term benefits when selecting a decking material.

Cost Breakdown: Supply vs. Installation

When budgeting for a new deck, it's essential to understand the price of a deck in terms of material costs per square metre, labor charges in Australia, and additional expenses such as permits, subframes, and coatings. 

The overall decking cost per m² in Australia depends on these factors, which vary based on location, material choice, and complexity of installation.

1. Material Costs per Square Metre

The decking cost per m² depends heavily on the material chosen. Below is a breakdown of material-only prices for different decking types in Australia:

Key considerations:

• Hardwood and composite decking material prices in Australia are higher than treated pine but offer better durability.

• PVC and aluminium decking are premium options with a long lifespan but come at a higher cost.

• Using a deck estimator can help compare costs before making a purchase.

2. Labor Charges in Australia

Labor costs vary based on the complexity of the installation, location, and contractor experience. On average, professional deck installation costs per m² in Australia range from $200 – $500. Here’s a breakdown of factors affecting labor charges:

Key factors affecting labor costs in Australia:

• Site Preparation: If excavation or land leveling is required, costs increase.

• Complex Designs: Multi-level decks or curved designs require specialized labor, adding to the total expense.

• Location: Major cities like Sydney, Melbourne, and Brisbane have higher labor rates than rural areas.

• Contractor Experience: More experienced professionals charge higher rates but offer better craftsmanship.

3. Additional Expenses (Permits, Subframes, Coatings)

Beyond materials and labor, additional costs should be factored into the final price of a deck:

A. Permits & Council Approvals

• Depending on your location, a permit may be required for a deck above 600mm in height.

• Permit fees: $200 – $1,000 (varies by council and deck size).

• Some councils require engineer inspections, which can add $500+ to costs.

B. Subframes & Foundations

• Subframes support the deck and can be made from treated pine ($50 – $150 per m²) or steel ($100 – $300 per m²).

• For sloped terrain, additional support posts and footings may be required, increasing costs.

• If using composite decking material, ensure the subframe is compatible to prevent warping or instability.

C. Decking Coatings & Finishes

• Timber decking requires sealing and staining every 1 – 2 years to maintain longevity.

• Average cost for staining & sealing: $10 – $30 per m².

• Composite, PVC, and aluminium decking typically require minimal maintenance, reducing long-term costs.

Final Cost Estimate for Decking in Australia

Using this guide, homeowners can get a clear understanding of the decking cost per m² in Australia and make informed decisions. 

DIY vs. Professional Decking Installation

When planning a deck, homeowners often face a crucial decision: 

Should you build it yourself (DIY) or hire a professional deck builder? 

While a DIY approach can save money, professional installation ensures quality and compliance with Australian building standards. Below, we explore the pros and cons of DIY decking and the key reasons to hire a professional deck builder.

1. Pros and Cons of DIY Decking

A DIY deck installation is appealing for those who enjoy hands-on projects, but it comes with risks and challenges.

Challenges of DIY Decking

• Building Regulations: In Australia, decks higher than 600mm above ground require council permits and must meet safety standards. Incorrect installations may lead to legal issues.

• Structural Integrity: Without proper knowledge, DIY decks may not be built to withstand weather, load-bearing requirements, or movement over time.

• Specialized Tools: Decking requires precision cutting, securing, and measuring, often needing tools that DIYers may not own.

• Time-Consuming: A professional can complete a deck in a few days to a couple of weeks, whereas a DIY deck might take months.

2. Why Hire a Professional Deck Builder?

For homeowners who prioritize durability, compliance, and a stress-free experience, hiring a professional deck builder is the best option.

Benefits of Hiring a Professional Deck Builder

When is Professional Installation Essential?

• Large or Multi-Level Decks: If your deck is over 20m² or has multiple levels, hiring a professional ensures stability and longevity.

• Challenging Site Conditions: If your property has uneven ground, sloping terrain, or poor soil conditions, expert builders can reinforce the deck structure properly.

• High-Quality Materials: Professional builders handle composite decking material and premium hardwoods with specialized techniques to enhance durability.

• Long-Term Investment: If you want your deck to increase your property value, professional installation ensures a well-finished look that appeals to potential buyers.While a DIY deck is an option for skilled homeowners looking for cost savings, the risks and time commitment often outweigh the benefit of hiring a tradie. 

If you're investing in a wooden decking or composite deck, hiring a tradie is the best way to ensure a high-quality, long-lasting structure.

Decking Cost by Size

The cost of building a deck in Australia depends on several factors, including deck size, material choice, and labor costs. Below, we break down the estimated costs based on different deck sizes to help homeowners plan their budget.

1. Small Deck (10 sqm) – Best for Compact Outdoor Spaces

A small deck (approximately 10 square metres) is perfect for balconies, patios, or small backyard extensions. This size suits apartment balconies, townhouses, or smaller homes where space is limited but outdoor entertainment is still desired.

Cost Breakdown:

• Timber Decking: $2,000 – $4,000

• Composite Decking: $3,000 – $5,500

• Labor Costs: $1,500 – $3,000

• Total Cost Estimate: $3,500 – $8,500

Key Considerations:

• Affordable and quick to install compared to larger decks.

• Ideal for outdoor dining areas or lounge spaces.

• Limited space for additional features like built-in seating or pergolas.

2. Medium Deck (20-30 sqm) – Ideal for Outdoor Entertainment

A medium-sized deck (20-30 square metres) is the most popular option among Australian homeowners. It provides enough space for a dining set, BBQ area, or even a small hot tub, making it a great choice for families and those who love outdoor entertaining.

Cost Breakdown:

• Timber Decking: $4,000 – $9,000

• Composite Decking: $6,000 – $12,000

• Labor Costs: $3,000 – $6,000

• Total Cost Estimate: $7,000 – $18,000

Key Considerations:

• Balances cost and functionality, offering more room for outdoor furniture and activities.

• Can be designed with railings, built-in seating, or decorative elements.

• Requires more structural support and maintenance, especially with timber decking.

3. Large Deck (50+ sqm) – Premium Outdoor Living

A large deck (50+ sqm) is a luxurious addition, perfect for spacious backyards, poolside areas, or wrap-around decks. This size accommodates multiple seating zones, outdoor kitchens, pergolas, and even fire pits.

Cost Breakdown:

• Timber Decking: $10,000 – $20,000

• Composite Decking: $15,000 – $30,000

• Labor Costs: $6,000 – $12,000

• Total Cost Estimate: $16,000 – $40,000+

Key Considerations:

• Ideal for luxury outdoor living and large gatherings.

• Enhances property value, making it a great long-term investment.

• Higher upfront costs for materials, labor, and additional structural supports.

• Requires proper permits and council approvals, especially for elevated decks.

Choosing the Right Deck Size

The decking cost per m² in Australia varies based on material, design complexity, and labor. Whether you're installing a small wooden decking area or a large composite deck, considering long-term maintenance and durability is essential.

Would you like a deck estimator to get a more precise quote for your project? Contact the Trusted Tradie Network for expert advice on decking costs, materials, and installation services! 

Council Regulations & Permits for Decking in Australia

Before starting a decking project, it’s crucial to check council regulations and permit requirements in your state or territory. Many local councils in Australia require development approval for decks, especially if they exceed certain height, size, or structural specifications.

When Do You Need a Permit?

You may need council approval if:

• The deck is higher than 600mm above ground.

•  The total area exceeds 10-25 sqm (varies by state).

• The deck is attached to the house and affects its structural integrity.

• You live in a bushfire-prone or heritage-listed area.

Permit Costs & Approval Process

• Application fees range from $200 – $1,000, depending on location

• Some councils may require engineering and site plans

• Inspections may be necessary for compliance with safety standards

To avoid fines or issues, always check with your local council or hire a licensed deck builder who understands decking regulations in Australia.

How to Build a Budget-Friendly Deck

Building a deck can be a significant investment, but there are ways to reduce decking costs without sacrificing durability or aesthetics. 

Here are some cost-effective decking tips to help you stay within budget while ensuring a high-quality finish.

1. Choose Cost-Effective Materials

Selecting the right decking material can greatly impact the price of a deck. While premium timber decking like Merbau is popular, more affordable options like treated pine can help cut costs.

 If you prefer composite decking, compare different composite decking material prices in Australia to find a budget-friendly option that still offers longevity and low maintenance.

2. Optimize Your Deck Size

The larger the deck, the higher the decking cost per m². To save money, plan a deck size that meets your needs without unnecessary extensions. A simple rectangular design is often more affordable than intricate layouts with curves or multiple levels.

3. Compare Quotes from Deck Builders

Labor charges for deck installation in Australia can vary. Get multiple quotes from licensed deck builders to compare rates and services. Some cost-effective tradies offer package deals, combining materials and labor at a reduced price.

4. Consider DIY for Simple Decking Projects

If you have basic carpentry skills, you can save on decking installation costs by handling some parts of the project yourself. However, professional installation ensures compliance with building codes and permits, especially for elevated decks.

5. Buy Materials in Bulk

Purchasing materials in bulk can lower the decking cost per m² in Australia. Many suppliers offer discounts for bulk orders, especially for wooden decking or composite decking materials.

By following these tips, you can create a stunning and durable deck while keeping expenses under control. 

Why Choose Trusted Tradie Network for Decking Installation?

Trusted Tradie Network is a top choice for decking installation in Australia, offering professional, high-quality, and affordable solutions. 

Our team consists of skilled and licensed deck builders specializing in timber decking and composite decking. With years of experience, we ensure precise workmanship and compliance with Australian building standards.

We provide transparent pricing, with a detailed deck estimator outlining decking costs per m², ensuring no hidden fees. We source premium materials, including hardwood, treated pine, and composite decking, helping you find the best options within your budget.

With warranties on materials and labor, plus dedicated after-sales support, we guarantee durability and long-term satisfaction. Choose Trusted Tradie Network for reliable, stress-free decking installation!

Conclusion

Investing in a deck enhances your outdoor space, increases property value, and provides a great place for relaxation and entertainment. 

However, understanding the decking cost per m² and other associated expenses is crucial before starting your project. Factors such as material choice, deck size, labor costs, and council permits all influence the final price.

If you opt for traditional timber decking or modern composite decking materials, hiring a professional ensures high-quality installation. 

Trusted Tradie Network offers reliable, affordable, and expertly crafted decking solutions across Australia. With experienced builders, transparent pricing, and top-tier materials, we make decking installation stress-free and cost-effective.

FAQs

1. What is the average cost of building a deck in Australia?

The cost of building a deck in Australia depends on the materials used and the size of the deck. On average, timber decking costs $200 to $1,000 per square metre, while composite decking ranges from $350 to $1,500 per square metre. Additional costs, such as permits, labour, and finishing, should also be considered when budgeting.

2. Which is more cost-effective: decking or paving?

Decking is often more expensive than paving due to material and installation costs. However, factors like maintenance, durability, and aesthetic preference play a role in the long-term value. Paving typically costs $40 to $100 per square metre, making it a more budget-friendly option upfront.