How many bored piers does a typical house need?

This genuinely varies significantly by project — it depends on your building’s size and layout, the loads involved, and your soil report’s findings, all assessed by your engineer rather than following a fixed ratio.

A larger or more complex building, or one on more challenging soil, generally needs more piers than a smaller, simpler structure on straightforward ground — but the specific number is calculated for your project, not estimated from a general rule.

This figure comes directly from your engineering design once it’s complete — if you’re still in early planning, your engineer can give you a genuine indicative range once they’ve reviewed your soil report and building design.

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