How much does underpinning cost?

Underpinning in Australia typically costs $12,000–$25,000 for a single affected section of a home, with individual piers around $2,500–$5,000 each.

Typical price band

$18,000typical

$5,000 low$50,000 high

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Real-world examples

Minor stabilisation$5,000 – $12,000

One side of the home$12,000 – $25,000

Extensive underpinning$25,000 – $50,000

— Extent of movement. The number of piers or injection points needed is the core cost driver.

— Method. Resin injection has less excavation and disruption; traditional concrete piers suit deeper or heavier corrections.

— Soil type & footing depth. Reactive clay and deep stable-soil layers mean deeper, more expensive piers.

— Access. Tight side access, paving and internal work (through floors) slow excavation dramatically.

— Engineering & approvals. Geotechnical reports, structural design and building approval add cost before work starts.

— Underpinning is structural work — it needs a structural engineer's design and, in most states, building approval.

— Fix the cause first: broken drains, poor stormwater and thirsty trees near footings are behind most subsidence.

— If the movement is recent, check whether your home insurance covers investigation or rectification before paying.

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Indicative range only, not a quote. Get quotes from local tradies for an exact price. Last updated 13 July 2026.

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