Cost of Building a Deck in South Africa
| Average Deck Building Cost | R800 to R1,200 per square metre |
| Budget Deck Building Cost | R500 to R800 per square metre (using more affordable materials like pine) |
| High-End Deck Building Cost | R1,500 to R3,000+ per square metre (using premium materials like balau, composite, or high-quality hardwood) |
- These prices above are estimates and can vary
The cost of building a deck varies widely depending on factors such as deck size, material choice, and complexity of the design. On average you can expect to pay between R800 and R1,200 per square metre for a typical wooden deck. Budget-friendly options, like pine decking, could cost around R500 to R800 per square metre, while high-end decks using premium materials such as composite, balau, or hardwood can cost R1,500 or more per square metre. Additional features like railings, built-in seating, or intricate designs will increase the overall cost.
Estimated Costs Associated with Deck Building
- Pine wood decking (budget material):
R80 - R150 per linear metre - Balau wood decking (high-end material):
R200 - R450 per linear metre - Composite decking (low-maintenance material):
R500 - R1,500 per square metre - Support posts and foundation materials:
R1,500 - R3,000 depending on deck size and complexity - Decking screws and fasteners:
R250 - R600 per project - Deck stain and sealant:
R300 - R600 per litre - Labour for deck construction:
R250 - R800 per square metre, depending on the complexity - Transportation of materials:
R500 - R1,500 depending on distance - Call-out fees (if applicable):R300 - R800
How is a Deck Built?
- Planning and design:
Start with a layout plan, ensuring that all dimensions, materials, and any additional features (such as railings or stairs) are included. - Site preparation:
Clear the area where the deck will be constructed. Depending on the site conditions, levelling the ground or laying a foundation may be required. - Foundation and framing:
Dig holes and set the support posts, ensuring the deck structure is stable. Attach the framing that will support the deck boards. - Installing decking boards:
Lay and fasten the decking boards to the frame using screws or hidden fasteners, ensuring an even, secure fit. - Finishing touches:
Apply stain or sealant to protect the wood from the elements. Install any additional features like railings, built-in seating, or planters.
How Long Does it Typically Take to Build a Deck?
The time required to build a deck can vary significantly based on the size and complexity of the project.
- Small deck (10-20 m²):
2-4 days - Medium deck (20-40 m²):
4-7 days - Large or complex deck (40 m²+ with additional features):
7-14 days - Preparation time for site levelling and foundation:
1-2 days
DIY - How to Build a Deck?
- Plan and Design
Measure the space and decide on the deck’s size, height, and materials. Draw up a simple sketch that includes the layout and any features like stairs or railings. - Gather Materials and Tools
You’ll need decking boards (pine, hardwood, or composite), support posts, screws, fasteners, a saw, a drill, and a level. Make sure you also have protective gear. - Prepare the Ground
Clear the area of any debris or vegetation. If the deck is elevated, dig holes for support posts and fill them with concrete for a solid foundation. - Build the Frame
Assemble the deck’s framework by attaching joists to the support posts. Make sure the frame is level and sturdy. - Install Decking Boards
Lay the decking boards across the frame and secure them with screws or fasteners. Leave small gaps between the boards for drainage. - Add Finishing Touches
If you’re adding railings or stairs, install them now. Once the deck is complete, apply sealant or stain to protect the wood from weather damage.
Tip: Ensure your deck is level and stable at every stage. If you’re unsure about safety or structural integrity, consider getting professional help!
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When Should You Get Professional Help?
While small, straightforward decks can be a manageable DIY project, it’s often better to hire a professional for more complex builds. If your deck is elevated, includes intricate designs, or requires advanced construction techniques, getting expert help ensures the deck is safe and built to last.
How to Save Money on Deck Building?
- Choose budget-friendly materials:
Pine decking is much cheaper than hardwood or composite options. - Do some prep work yourself:
Clearing the site and doing some groundwork can reduce labour costs. - Compare quotes:
Always get multiple quotes from contractors to ensure you’re getting the best price. - Avoid unnecessary extras:
Built-in seating, planters, or intricate railings can significantly increase costs. Keep the design simple if you're on a budget.
How To Find the Right Pro to Build My Deck?
For a stress-free deck building process, look no further than Kandua. By posting a job with Kandua, you can relax knowing you'll be connected with and receive quotes from affordable, vetted and top rated Pros who can efficiently handle any job.
Now that you have a better understanding of deck building prices – it’s time to find the best Pro for the job.
Luckily for you – Kandua has hundreds of Pros who build decks on a daily basis.
Here are our top tips to help you find the right Pro to build your deck:
- Give the contractor as much information as possible. The more details they have the more efficiently they can quote on the job and also offer their professional advice.
- Once you’ve gotten quotes from different Pros – you can look up their profiles on Kandua and read their reviews and see pictures of their work.
- Read the quote carefully. Make sure you double-check everything so you know exactly what you are getting yourself into.
Remember, it’s not always about finding the cheapest option. Stick to these tips, and take into account the entire package, Pro reviews, your experience in dealing with them and then, of course, the cost.
These figures are approximate and may not accurately reflect current prices in South Africa. Click here for free, non-obligatory, up-to-date, location-specific quotes for building a deck.
Frequently Asked Questions About Building a Deck
Q: What materials are best for a long-lasting deck?
A: Hardwood and composite decking are known for their durability and low maintenance. They tend to last longer than budget options like pine, especially in South Africa's varying climate.
Q: Do I need planning permission to build a deck?
A: Generally, you won’t need planning permission for a ground-level deck. However, if your deck is elevated or located near property boundaries, you may need approval from local authorities.
Q: How do I maintain my deck?
A: To prolong the life of your deck, clean it regularly, reapply sealant or stain every 2-3 years, and check for any signs of wear or damage that need repair.
Q: Can I build a deck on uneven ground?
A: Yes, but it requires careful planning. You may need to level the area or use extra support posts to ensure the deck remains stable and safe.
Q: How long does a wooden deck last?
A: With proper maintenance, a wooden deck can last 10-15 years. Composite decks often last longer, up to 25 years or more, with minimal upkeep.
Q: What is the best wood for a deck in South Africa?
A: Balau and teak are popular for their durability and weather resistance. Pine is an affordable option but requires regular maintenance and treatment.
Q: How often should I reseal or stain my deck?
A: Wooden decks should be resealed or stained every 1-2 years, depending on weather exposure and wear.
Q: Can I build a deck over existing concrete?
A: Yes, you can build a deck over concrete as long as the concrete is stable. You may need to use adjustable deck supports for proper levelling.
Q: How do I prevent my deck from rotting?
A: Ensure proper drainage by leaving gaps between the boards, use treated or rot-resistant wood, and regularly apply a protective sealant.
Q: What’s the difference between composite and wood decking?
A: Composite decking is made from a mix of wood fibres and plastic, making it low-maintenance and durable. Wooden decking offers a more natural look but requires regular upkeep to prevent rot and weather damage.
