TradeBot Building Cost Estimate
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Brick Wall Calculator
Single leaf = 102mm; Cavity = two 102mm leaves + 50mm insulation
Enter your wall dimensions and click Calculate
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Concrete Block Wall Calculator
Standard 440×215×100mm dense concrete blocks
Enter your wall dimensions and click Calculate
🏠
Roof Calculator
Length of the ridge (eave to eave along the ridge)
Total width of the building (wall to wall)
Typical: 22° shallow, 30° standard, 45° steep
Enter roof dimensions and click Calculate
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Plasterboard Stud Wall Calculator
Assumes double-sided plasterboard (2400×1200mm sheets), 47×100mm studs at 600mm centres
Enter wall dimensions and click Calculate
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Garden Shed Calculator
Eave height (apex ridge will be higher)
Includes: CLS wall framing, OSB cladding, roof deck, floor panel, roofing felt and fixings
Enter shed dimensions and click Calculate
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Timber Fence Calculator
Standard: 1.8m (6ft)
Typical: 1.8m or 2.4m for closeboard
Enter fence dimensions and click Calculate
🪨
Patio Calculator
Typical: 50mm for slabs, 25–30mm for block paving
Enter patio dimensions and click Calculate
🪟
Plasterboard Ceiling Calculator
2400×1200mm boards, 10% wastage included
Enter room dimensions and click Calculate
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AI Building Cost Estimator
Powered by Claude · Live MacBlair prices
Estimates only — always verify with a qualified surveyor. Prices sourced from macblair.com and powered by TradeBot AI.