What is the cost of building a deck?

If you are thinking about upgrading your backyard, then you need to know the cost to build a deck from the very beginning. In Australia, a standard deck (16 m²) could be around AUD $3,000 to $5,000, while using good-quality materials or making large designs could easily cost AUD $10,000 or more. A good budget allows you to start well and not get shocked later on. 

This blog mentions all the important cost factors, your expected spending, and the factors that influence the price. Let’s dive deeper into it.

How Much Does It Cost for a Deck?

Understanding your spending helps you set a realistic budget. Below is a breakdown showing low, mid, and high cost examples for different sizes and material types.

1. Decking Price Per m²: A Clear Cost Breakdown

Here’s a more detailed comparison for commonly used materials. Use this to measure your budget based on deck size.

These ranges include installation but exclude major structural works or elevation. Always ask for detailed quotes and check what’s included.

2. Material Costs That Change the Price of a Deck

One of the main factors affecting the overall price is the choice of materials. Now let's see the impact of each material on the objective budget.

2.1 Treated Pine

Treated pine, being the cheapest variety of wooden deck, offers the best price and performs quite well for basic decking. This type of timber is very common in Australia. Even though the initial price is lower, customers need to consider a higher maintenance cost: probably, they will have to stain or reseal every few years.

2.2 Hardwood Timber

Hardwood varieties such as Spotted Gum or Merbau immediately give your deck the look of being luxurious and the quality of being durable. Their price is significantly higher initially; however, they survive longer and get more beautiful every day. The cost of wooden boards is higher for hardwood, which directly raises your budget for wooden decking.

2.3 Composite Decking

Composite boards are a mixture of plastic and wood. They demand more money from you at first, but in return, they are less demanding in terms of maintenance. They are much more resistant to fading, mold, and even weather damage. This will save costs in the future.

2.4 Framing materials

The structure beneath your deck matters. If you opt for aluminum or steel framing, then the choice will definitely cost you more, but at the same time it will also give strength and longevity. Timber joists are cheaper but come with a higher maintenance requirement. You may expect high installation costs if you choose a more durable frame.

2.5 Finishes & extras

Last but not least, remember sealants, protective coatings, balustrades, and lighting. Even if the price of the deck floor is acceptable, premium finishes can swiftly add extra spending to the overall price. The homeowners are often caught by surprise with these extra costs.

What Is the Cost of Installing a Deck?

Installing a deck involves more than simply laying boards. Labor, site preparation, planning, and permissions are all factors that contribute to it. On average, expect labor and installation costs ranging from about AUD $70 to $120 per hour in many areas of Australia. The total will depend on site complexity, access, and any structural work needed. A full installation might add another 30-50% on top of material cost. This is where the budget can grow if you have an uneven yard, a steep slope, or need to raise the deck off the ground.

Installation also means you should get a clear quote that breaks down labor, frame, board supply, fasteners, and waste removal. Before agreeing, check that the tradie you hire is fully licensed, insured, and experienced. 

Extra Features That Increase the Cost to Build a Deck

Adding extra features improves how you use your deck, but it also raises the cost of decking. Here are the common add-ons and how they affect the price.

1. Stairs & Landings

If your deck is raised, you’ll likely need stairs and a landing. The cost of a stair structure ranges from $800 to $2,500, depending on height and finish. Railings, kickboards, and landing support add to the total.

2. Balustrades & Handrails

Balustrades improve safety and look good, but costs vary. Basic timber rails might add $150-$300 per meter. Glass or metal styles push this to $400-$700 per meter.

3. Elevated or Multi-level Deck

Building above ground level adds complexity: you’ll need structural posts, engineering, extra joists, and sometimes permits. Elevated decks often move your cost into the upper budget brackets ($12,000+).

4. Built-in Seating or Planters

Integrated benches, boxes, or planter beds add convenience but also material and labor. Expect an additional $500-$1,500 for basic built-in seating and up to $3,000 for full planter/seat combos.

5. Roof or Covering, Lighting & Power Outlets

Adding a pergola, shade sail, or full roof brings your deck closer to outdoor living room cost. Lighting, power, under-deck sound, and ceiling fans add $1,000-$5,000. The finish quality drives the increase.

Trusted Tradie Network: Getting Accurate Quotes From Verified Builders

Finding the right builder is just as important as budgeting the right materials. Trusted Tradie Network connects you with skilled professionals who are background-checked, insured, and experienced across Australia. 

This prevents you from dealing with unreliable trades, costly delays, and unexpected expenses. No matter if your wish is just a simple deck or a complete outdoor makeover, the choice of getting the quotes, going through the previous works, and picking the contractor that matches your time and budget is yours.  Plus, you can even explore handyman services near you when planning future home upgrades.

Conclusion

The addition of a deck can be an attractive and rewarding investment for your property. When you have a good understanding of the cost to make a deck, how materials and labor deliver the final figure, and what features are contributors to higher costs, you can be more confident in your planning. 

The combination of a good contractor, a clear estimate, and quality materials will keep you from being taken by surprise. Think of your budget as a reference point, raise queries, and synchronize selections with your future aspirations. Your outside area will give you back the invested time and resources with multiplied pleasure.

FAQs

1. What is the decking price per m² for a basic wooden deck?

A standard deck might cost around AUD $150 to $220 per m² installed. This rate includes the boards, the supporting frame, and labor for a standard ground-level deck. The cost may shift a little depending on your location, deck design, and how easy the site is to access

2. How much does it cost to build a deck using hardwood timber?

Using hardwood like Spotted Gum or Merbau may cost around AUD $240 to $400 per m² installed, depending on board size and finish. A hardwood deck often pays off in long-term durability and property value.

3. What is the cost of installing a deck with extra features (stairs, balustrade, elevated structure)?

Stairs and handrails can make your deck cost more because they need extra work and materials. If your deck is high or your yard is uneven, the builder may need more posts to keep it safe, which also raises the price. Adding things like lights, privacy screens, or a small roof can turn your deck into a great outdoor space, but they add extra labor and parts. With these upgrades, your cost can increase by around AUD $2,000 to $5,000 or more.

4. How much does a simple treated pine timber deck cost compared to premium timber decking?

A basic treated pine deck might cost AUD $150-$220 per m². A premium timber deck could cost AUD $300-$450 per m² installed. The difference comes from material quality and finish.

5. What influences the cost of decking beyond material choice?

Even if you pick cheaper boards, a few things can still raise the price. Labor costs can be higher in some areas, and if your yard is sloped or hard to reach, the job takes more time. Some decks also need council approval, which adds extra fees. Upgrades like lights, built-in seating, or waterproofing will also increase the total.