Decking Castlecrag — Timber & Composite Deck Builders
5 Star Decking builds and replaces decks across Castlecrag and the Lower North Shore. Known for its bushland setting and stunning homes perched above Middle Harbour, Castlecrag is one of Sydney’s most beautiful suburbs — and a deck is one of the best ways to make the most of it. We build decks that complement the natural surroundings, using premium hardwood timbers and zero-maintenance composite boards suited to the leafy, coastal environment.
Decking Services in Castlecrag
Hardwood Timber Decking
Spotted Gum, Blackbutt and Merbau — premium hardwood timbers that blend beautifully with Castlecrag’s native bushland setting. Built with C24 treated pine joists at 400mm centres for a solid, long-lasting subframe. Requires oiling every 12–18 months to maintain its natural beauty.
Composite Decking
Zero-maintenance composite boards — no oiling, no sanding, no repainting. Ideal for Castlecrag’s tree canopy environment where leaf debris and moisture can cause issues for untreated timber. 25-year product warranties available on selected ranges.
Deck Replacement
Many Castlecrag homes have original timber decks that are well past their best. We handle full deck replacement — removing old decking, checking and replacing the subframe where needed, and installing a fresh new deck that will last decades.
Elevated & Split-Level Decks
Castlecrag’s sloping blocks and elevated homes often call for multi-level or cantilevered deck designs. We have the structural knowledge to build safely on difficult terrain — with proper footings, posts and beams engineered for the site.
Balustrades & Railings
Glass, timber or composite balustrades installed to Australian Standards. All spindle spacing checked to comply with the 100mm child safety rule. Glass balustrades are a popular choice in Castlecrag for maximising harbour and bush views.
Pergolas & Outdoor Structures
Custom pergolas and shade structures to complete your outdoor living space. Whether you want a simple louvre roof or a full alfresco structure, we design and build to suit your home and lifestyle.
Recent Project — Castlecrag Harbour View Deck
This stunning multi-level composite deck project in Castlecrag showcases what’s possible on a sloping harbour-view block. The scope included a large entertainment deck, curved pool surround, feature staircase with integrated LED step lighting, frameless glass balustrades, and a sandstone wall detail — all finished in a premium composite board with a natural timber grain. The result is a zero-maintenance outdoor space that makes the most of the Middle Harbour views.
Why Choose 5 Star Decking in Castlecrag?
- NSW Licensed builders — Licence No. 395250C
- 2-year workmanship guarantee on all installations
- New materials only — no recycled or reclaimed timber used without your knowledge
- Experienced with sloping and elevated blocks common in Castlecrag
- Free, no-obligation quotes with detailed written breakdowns
- We do not subcontract — your quote is your price
- Local team servicing the Lower North Shore and Middle Harbour area
Decking Prices in Castlecrag
Decking costs in Castlecrag typically range from $150–$250 per m² for composite decking and $120–$180 per m² for hardwood timber, depending on deck height, complexity and materials selected. Elevated or split-level decks on sloping blocks may require additional structural work — we’ll detail everything clearly in your quote.
Every job is different — contact us for a free site visit and written quote tailored to your property.
Areas We Cover Near Castlecrag
We regularly build decks across Castlecrag, Northbridge, Willoughby, Cremorne, Cremorne Point, Cammeray, Neutral Bay, Mosman, Castle Cove and Chatswood. If you’re on the Lower North Shore or Middle Harbour, we cover your area.
Get a Free Quote in Castlecrag
Call us on 0433 334 415 or fill in our online quote form and we’ll be in touch within 24 hours. Free site visits across Castlecrag and the wider Lower North Shore.