Hardie Board Siding Calculator
Estimate James Hardie siding panels, trim, and cost.
Last updated: June 2026
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Wall length × height for each exterior wall, added together. Typical 2,000 sq ft home has ~2,000-2,500 sq ft of exterior wall.
Default 12% accounts for typical door/window ratio.
Most popular. Horizontal lap siding, looks like wood clapboard. 12 ft lengths.
Material & Cost Estimate
Net siding needed1,937 sq ft(20 squares, incl. 10% waste)
Planks needed27712 ft boards
Pallets to order2full pallets
Material cost$4,843 - $9,685
Labor cost$8,717 - $17,433
Total installed costMaterials + labor (national average)
$13,560 - $27,118$6.8-$13.6/sq ft
Premium markets: Northeast & West Coast typically run $10-$22/sq ft installed. Add 30-50% to the estimate above for these regions.
Based on: 2,000 sq ft walls − 12% openings × 1.10 waste. HardiePlank® Lap Siding at 8.25" exposure. Prices from HomeAdvisor + Homewyse 2026. Last verified: June 2026.
Disclaimer: Not affiliated with James Hardie Industries. This is an independent estimation tool using publicly available product specifications.