Decking & Patios Cost Calculator
Outdoor timber decks, composite decking systems, verandahs, pergolas, and elevated entertaining platforms.
Itemised Cost Breakdown
Specification: Treated Pine Decking with H3/H4 treated subfloor framing, post footings, and stainless/galvanised fasteners.
Treated Pine Decking @ 240/m²
30m² @ $50/m²
Complying Development Certification
Council processing fee
Estimated Mandatory Compliance Costs
Council lodgement, certification fees, and engineering sign-offs
Complying Development Certificate (CDC) Required
Deck height 0.6m and/or area 30m² exceeds exemption thresholds.
- Height: 0.6m (threshold: 1.0m)
- Area: 30m² (threshold: 25m²)
- ⚠️ Private certifier sign-off required
- ⚠️ Complying Development path recommended (faster than DA)
- Estimated timeline: 2–4 weeks
Decks with a trafficable surface higher than 1.0m above ground level legally mandate a continuous 1.0m balustrade with vertical openings not exceeding 125mm. In WA and Victoria, raised decks within 7.5m or 9.0m of side boundaries require statutory privacy screening under the R-Codes and ResCode.
Material Price Brackets
Economical light softwood timber boards. Requires bi-annual staining or painting.
Expected lifespan: 15-20 yrs years
Dense, durable red-brown hardwood with natural termite and rot resistance.
Expected lifespan: 25-30 yrs years
High-density Australian hardwood with high BAL fire rating and distinctive grain.
Expected lifespan: 40+ yrs years
Recycled timber-polymer boards. Zero splinters, no oiling, rot-proof.
Expected lifespan: 25-30 yrs years
Want Council Exemption Rules for Your Property?
Select your local government area to check planning regulations, boundary setback thresholds, and statutory council approval requirements.
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