How much does a deck cost to build?
Thinking about expanding your outdoor living space with a new deck? You’re not alone. Many homeowners are turning to decks as the perfect place for entertaining, relaxing, and adding value to their property. But how much does a deck cost? The answer isn’t simple, because the cost to build a deck will always vary based on design, materials, approvals, and installation. This guide explores everything that affects overall decking cost so you can make an informed decision when planning your project.
Explore Our Deck Building Services
What Is a Deck?
At Altec, a deck isn’t just wooden decking boards on a frame. It’s a purpose-built, roofed or uncovered structure designed to feel like a natural extension of your home’s floor space. Whether you want a raised deck for better views, a pool deck for summer lounging, or a covered deck for year-round outdoor entertaining, our decks are tailored to your lifestyle, built for the Australian climate, and constructed with durability in mind.
How much does it cost to build a deck?
The cost of building a deck depends on many factors. Here are the key considerations:
Size, Shape and Layout
Deck size is the single biggest factor in deck costs. Because materials are generally costed by the square metre, larger decks require more boards, framing and labour to complete. Simple rectangular designs are typically cheaper to install, while multi-zone layouts, curves or split levels add to the overall decking cost.
Height, Structure and Access
Deck heights influence price. Councils limit deck heights in many areas, and decks larger than a certain height may require additional joists, bracing, and engineering. Elevated decks are more labour intensive than ground-level platforms, and restricted site access can increase labour cost.
Deck Surface Materials
The choice of flooring and materials plays a major role in deck prices:
- Composite decking materials – Durable and low-maintenance, made from timber fibre and plastic. Higher material cost upfront, but less regular maintenance.
- Australian hardwood timber decking – Strong and stylish options such as spotted gum or merbau. Timber decking requires deck oil or stain to maintain its appearance.
- Basic treated pine decking – A more affordable option, but shorter lifespan and higher maintenance compared to hardwoods and composite.
- Wooden decking – Classic appeal, but cost depending on species and upkeep required.
How much does a covered deck cost?
A covered deck can transform your outdoor space into the perfect place for entertaining year-round. Roofing increases deck installation cost, with choices like insulated panels, heat-deflective roofing, and custom gutters all influencing the final cost.
Stairs, Balustrades and Safety Features
If your deck requires stairs or balustrades due to local council rules, expect additional costs. Multiple flights of stairs or custom balustrades increase both material and labour fees.
Approvals, Certifiers and Local Council
Most new deck projects require council approval, especially for elevated or roofed designs. A building certifier ensures your project meets regulations, and approvals vary based on your council. Other councils may have stricter overlays for flooding or bushfire zones, which can affect total deck extension costs.
Site Preparation and Services
Factors such as soil conditions, slope, or the need to remove existing structures can affect the cost to build a deck. Covered decks often require stormwater connections, and relocating underground services can add additional costs.
Ongoing Care and Overall Cost
Timber decking requires regular maintenance, while composite decking is lower upkeep. These choices impact not just the upfront deck cost but the overall cost across the life of the deck.
Popular Deck Styles
- Raised decks for sloping blocks.
- Pool decks designed for water resistance and safety.
- Deck extensions to expand your home’s floor space.
- Covered decks for shade and all-weather outdoor entertaining.
- Front entry decks to enhance street appeal.
How Altec Plans and Prices Your Decking Project
Working with experienced decking contractors makes the process easy. At Altec, every decking project includes:
- Free design consultation to discuss your goals.
- Material selections from treated pine decking to hardwoods and composite options.
- Detailed quoting with breakdowns for materials, labour, roofing, stairs, flooring and accessories.
- Approvals managed with a private building certifier for council approval.
- Construction and installation by our qualified team.
- Handover and maintenance advice to protect your investment.
Would you like some more information on how we’ll work on your project? Get in touch with our team today to book a free consultation.
Budget Planning Checklist
When estimating cost to build a deck, keep these key factors in mind:
- Deck size (length × width in metres).
- Height and any stair flights required.
- Preferred materials: balancing quality, cost, and future upkeep.
- Whether the deck requires a roof.
- Balustrades, lighting, privacy screens or blinds.
- Site challenges like soil type, slope, or access.
- Local council requirements such as deck heights or overlays.
- Any additional costs such as demolition or service relocation.
Why Work With Altec?
- Over 50 years’ experience building in Queensland and Northern NSW.
- Completely custom decking projects, suited to your home, lifestyle, and taste.
- 10-year workmanship guarantee and up to 15-year product guarantees.
- Assistance with council approval and building certifier processes.
- Service areas across Brisbane, Gold Coast, Sunshine Coast, Ipswich and Toowoomba.
Ready to Start Your Decking Project?
Because decking costs vary based on so many factors, you won’t find fixed deck prices listed online. The best way to know how much to build a deck for your home is to book a free design consultation. Our team of decking contractors will provide a tailored quote that reflects your site, materials, and design – so you know exactly what to expect. Explore our Deck & Cover Combinations or browse ourDeck Designs Gallery for inspiration.
