Chatswood’s mix of harbourside slopes, established gardens and premium homes makes it one of the most rewarding — and technically demanding — suburbs on Sydney’s Upper North Shore to build a deck in. 5 Star Decking has completed hardwood and composite deck installations across Chatswood, Chatswood West, and the surrounding Willoughby LGA, from flat courtyard decks to full multi-level structures built to handle steep, sloping blocks.
2026 Decking Prices in Chatswood
Here’s what Chatswood homeowners can expect to pay for a professionally installed deck in 2026. All prices are supply-and-install, and every quote includes a free on-site consultation before you commit.
| Decking Type | Price per m² | Notes |
|---|---|---|
| Composite Decking | $550/m² | Modelo, Evalast Pioneer, Millboard — low maintenance, 20+ year lifespan |
| Pool Decking | $550/m² | Slip-rated composite boards, ideal for pool surrounds |
| Hardwood Decking | $440/m² | Merbau, Spotted Gum, Blackbutt, Jarrah |
| Deck Restoration | $150/m² | Sanding, oiling, board replacement on existing decks |
A typical 20m² Chatswood courtyard deck in composite runs around $11,000, while a hardwood equivalent starts around $8,800. Sloping blocks — common in Chatswood West and around the Pacific Highway ridge — usually add substructure costs for extra bearers, posts and engineering, which we’ll always scope out on the free site visit before quoting.
Building on Chatswood’s Sloping Blocks
A large share of Chatswood properties sit on sloping or split-level land, especially the streets running down toward the Ryde and Lane Cove valleys. This changes the build significantly from a standard flat-block deck:
- Elevated substructures — steel or treated timber post systems engineered for drop heights over 1m, often requiring a structural engineer’s certification
- Balustrades — mandatory to AS1170.1 once deck height exceeds 1m off the ground, which applies to most sloping-block decks in the area
- Access and staging — narrow driveways and steep gardens common in Chatswood mean materials often need to be hand-carried or craned in, which we factor into scheduling
- Drainage — underdeck drainage systems to manage runoff on sloped sites, keeping the space below usable and dry
We’ve built multi-level decks on some of the steepest blocks in Chatswood West and Artarmon, so this isn’t unfamiliar territory — it’s a large part of what we do across the Upper North Shore.
Willoughby Council Decking Approvals
Chatswood falls under Willoughby City Council. Whether your deck needs a Development Application (DA) or can proceed as Complying Development (or exempt development) depends on height, size, and proximity to boundaries:
- Low decks under 1m in height, set back from boundaries, are generally exempt development and don’t require council approval
- Decks over 1m high, or those attached to a heritage-listed or conservation-area property (common in parts of Chatswood), typically need a DA or CDC through an accredited certifier
- Willoughby Council has specific requirements around tree preservation — many Chatswood blocks have protected trees that affect where footings can be placed
We handle the approvals process end-to-end where needed, including liaising with certifiers and preparing the structural drawings your application requires.
Our Decking Services in Chatswood
- Hardwood Decking — Merbau, Spotted Gum, Blackbutt and Jarrah installations built to last 25+ years
- Composite Decking — Low-maintenance options including Modelo, Evalast Pioneer and Millboard
- Deck Repairs & Maintenance — Sanding, oiling, board replacement and structural repairs
- Pergolas & Shade Structures — Freestanding and attached pergolas to complete your outdoor area
- Stairs & Balustrades — Timber, glass and cable balustrade systems to AS1170.1 standards
- Sloping Block Specialists — Elevated and multi-level deck substructures engineered for steep sites
Why Choose 5 Star Decking in Chatswood?
- ✅ 2-Year Workmanship Guarantee on every job
- ✅ NSW Licensed Builder — Licence No. 395250C
- ✅ Free On-Site Quotes — no obligation, including sloping-block assessments
- ✅ New materials only — never recycled or second-hand timber
- ✅ Fully insured — public liability and home warranty
- ✅ Local team — we know Chatswood, Willoughby Council requirements, and the Upper North Shore terrain
Frequently Asked Questions
Do I need council approval for a deck in Chatswood?
It depends on the height and location. Low decks under 1m, set back from boundaries, are usually exempt development. Taller decks, or those on heritage-affected properties, generally need approval through Willoughby Council or a private certifier. We assess this for you as part of the free quote.
How much does a deck cost in Chatswood in 2026?
Composite decking runs $550/m², hardwood from $440/m², with sloping-block sites attracting additional substructure costs depending on drop height and engineering requirements. A typical 20m² deck ranges from roughly $8,800 to $11,000 plus site-specific costs.
Can you build a deck on a steep or sloping Chatswood block?
Yes — this is one of our specialties across Chatswood West and the wider Upper North Shore. We engineer elevated substructures, install compliant balustrades, and manage drainage for sloped and split-level sites.
How long does a typical Chatswood deck build take?
A standard courtyard deck (15-25m²) usually takes 1-2 weeks. Multi-level or sloping-block builds requiring engineering and council approval can take 4-8 weeks including the approvals process.
Areas We Cover Near Chatswood
We service Chatswood and all surrounding suburbs including Willoughby, Lane Cove, Artarmon, St Leonards and Chatswood West. If you’re not sure if we cover your street, just call — we’re happy to visit anywhere in Sydney.
Get a Free Decking Quote in Chatswood
Call us on 0433 334 415 or fill in our online quote form and we’ll get back to you within 24 hours. We’re available Monday to Saturday, 7am–6pm.
📍 Servicing Chatswood, Willoughby, Lane Cove, Artarmon, St Leonards and all of Sydney.