Choosing a deck is about more than just picking a material. You need to think about shape, flow, and how your outdoor space will actually function. A poorly designed deck—no matter how premium the timber—can waste space and fail to serve your entertaining or relaxing needs.
At 5 Star Decking, we’ve built hundreds of decks across Sydney suburbs, and we’ve seen firsthand what works and what doesn’t. This guide will walk you through the design choices that matter, so you end up with a deck that’s not just beautiful, but perfectly tailored to how you live.
1. Start With Your Space: Measure Twice, Design Once
Before you even think about materials, measure your outdoor area carefully. Note:
- Total ground dimensions (length × width)
- Sun exposure throughout the day (morning, midday, afternoon)
- Views you want to frame or hide
- Existing features: pool, trees, outdoor setting area, barbecue
- Traffic flow from house doors to garden gates
A deck that’s too small wastes your investment. One that’s too large can feel overwhelming or create awkward shadows. A good rule of thumb: allocate at least 100–150 square metres if you want room for a dining table, lounge seating, and movement around both.
2. Choose Your Deck Shape: Rectangles, Curves & Levels
Rectangular decks remain the most popular because they’re efficient and work with most home architectures. They’re also the easiest to build and the most cost-effective.
Multi-level decks add visual interest and can define separate zones (dining on one level, lounge on another). They’re perfect for sloped sites and create a sense of luxury.
Curved or wraparound decks work beautifully for modern homes but cost more to build. They can soften hard edges and create intimate seating nooks.
L-shaped decks are ideal for corner properties or when you want to frame a pool. They encourage conversation and movement through the space.
At 5 Star Decking, our most popular Sydney builds use rectangular primary platforms with small curved accent areas—best of both worlds. This gives you efficiency, curb appeal, and a touch of elegance.
3. Decking Pattern: Diagonal, Straight or Mixed?
The pattern you choose affects both aesthetics and budget.
Straight-line patterns (parallel to the house) are traditional, cost-effective, and make smaller decks feel larger.
Diagonal patterns (45-degree angle) are visually striking and create movement. They’re particularly stunning with Merbau hardwood or Modelo composite. Expect 10–15% more labour.
Mixed patterns combine straight boards with diagonal accents. This works especially well for Bondi, Double Bay, and other premium suburbs where modern elegance is expected.
Herringbone patterns are statement designs but require more precision. Best reserved for visible, high-traffic areas.
Pro tip: Whatever pattern you choose, it should complement your home’s architecture. A Federation home suits straight lines; a modern minimalist home suits diagonal or mixed patterns.
4. Railings & Balustrades: Safety Meets Style
NSW regulations require railings on decks over 1 metre high. But railings are also design features.
Timber balustrades (spotted gum, blackbutt) create warmth and natural elegance. Cost: AU $320–$400/linear metre.
Composite balusters with timber frames offer durability without maintenance—perfect for coastal or high-moisture areas.
Glass railings open up views and create an airy, modern aesthetic. More expensive but transforms the feel of a space.
Horizontal cables (stainless steel + timber) suit contemporary homes and give a resort-style feel popular in Mosman, Neutral Bay, and Rose Bay.
5. Consider Traffic Flow & Zones
A well-designed deck should guide movement naturally.
- Entry zone: Wide, welcoming approach from the house
- Dining zone: Close to the house for easy catering; protection from prevailing winds if possible
- Lounge zone: Positioned for views and afternoon shade
- Activity zone: Space for kids to play or hobbies (outdoor bar, seating nooks)
If your deck is large enough, separate these with subtle level changes or colour shifts. This prevents the “one big empty platform” feeling.
6. Budget Across Design Complexity
Here’s what influences cost:
- Simple rectangle, straight boards: $50–70/m² (AU dollars)
- Multi-level, mixed patterns, premium railing: $100–150/m²
- Curved features, specialty patterns, high-end balustrades: $150–200+/m²
A 30m² suburban deck with straight boards and simple timber railings might cost $2,500–$3,500. A 40m² multi-level entertainer’s deck with mixed patterns and glass balustrades could run $5,000–$8,000+.
Our most popular price point in Sydney’s target suburbs (Coogee, Randwick, Bondi, St Ives) is $4,000–$6,000 for a quality deck that will last 15+ years with minimal maintenance.
7. Material Pairs Well With Design
Your design should match your material choice:
- Hardwood (Merbau, Spotted Gum): Shows off natural grain; straight or diagonal patterns are stunning. Requires oiling every 12–18 months.
- Composite (Evalast Pioneer, Modwood): Maintenance-free; works beautifully in modern patterns and colour shifts.
- Treated Pine: Budget-friendly; works best with clean, simple designs.
Getting Started: Your Next Steps
A great deck design starts with a conversation. We recommend:
- Measure your space and identify your top 3 priorities (entertaining, relaxation, views, durability)
- Browse inspiration photos (we can help with this)
- Book a consultation with our design team—it’s free and takes 30 minutes
- Get a quote based on your design preferences and material choices
Ready to Design Your Perfect Sydney Deck?
Call us on 0433 334 415 or visit our contact page to book a free design consultation. We’ll help you create an outdoor space that looks stunning and functions beautifully for years to come.
5 Star Decking — Premium Timber & Composite Decking Across Sydney
