Quick Deck Size Presets
ESTIMATED DECK BUDGET$13,547 AUD
Calculated using average timber and composite construction rates in QLD. Includes structural subframe posts, GST, Form 15 compliance, and builder margin (18%).
⚠️ Natural Timber Maintenance: Requires annual sanding and application of UV-Protection Decking Oil (approx $180/year in supplies to prevent grey rot).
Interactive 2D Framing Blueprint
Dynamic subframe blueprint showing bearer runs (dashed brown), joist spacing (thin lines), and stumps grid (dots).Bill of Quantities (BoQ) Takeoff
Dimensions & Footprint
Total Deck Surface Area:24.00 sqm
Outer Perimeter Layout:20.00 m
Subframe elevation level:mid clearance
Physical Framing Takeoff
Decking Boards (90mm width):291 Linear Meters (15% waste)
Subframe Bearers Timber length:4 runs (24.0m total)
Subframe Joists Timber length:15 joists (60.0m total @ 450mm)
Footing Stumps/Posts count:20 Footings grid
Footing Post-Mix Bags (20kg):40 Bags
Board Fasteners Packs (500/pack):3 Packs (1470 total screws/clips)
UV Deck Oil coating needed:5 Liters (Double coat)
Estimated Budget Schedule
Excavation & Post Hole anchors:$3,040
Subframe Timber/Steel framing (pine_h3):$1,104
Footings Concrete supplies:$480
Decking Boards material (merbau):$2,346
Face Screws / Concealed Clips:$225
Deck Oil & Applicator supplies:$175
Carpenter & framing labor:$2,880
Builder Margin (18%):$1,845
Form 15 Engineering Sign-off:$220
GST (10%):$1,232
✦ Contractor Briefing & Communication Guide
Use these tailor-made questions based on your specifications (6.00m x 4.00m deck using merbau boards & pine_h3 subframe) to communicate clearly with your builder or carpenter.
Subframe & Elevation Briefing:"I've specified a pine_h3 subframe. For a midclearance subframe structure, what footing depth and concrete stump size do you recommend for our soil type?"
Decking Boards Briefing:"We are laying merbauboards. Are we using face-screwing or a concealed clipping system, and will we need a double picture-frame border around the edges?"
Compliance & Engineering:"Will this deck configuration require a Form 15 design certificate for structural engineering sign-off, and does the balustrade height conform to the standard 1.0m QLD building code requirement?"
✦ Deck Safety & Balustrades Compliance Notes
- Height > 1.0m: Balustrades (minimum 1.0m high) are legally required by QLD building code. Vertical wire gaps must not exceed 125mm.
- Height > 4.0m: Balustrades must not have horizontal wires or rails (climbing hazards). Frameless glass is standard for this tier.
- Subframe Timber: Must be H3 rated for above-ground framing. Ground-contact stumps or posts MUST be H4 or concrete.
- Form 15 Certificate: Necessary for structural timber certificates in QLD. Your certifier will require this prior to sign-off.