Select the repair method and roughly how much of the house is affected. This tool returns an indicative Australian cost range drawn from published Australian contractor pricing, so you know what a fair range looks like before you get a written quote.
Last reviewed July 2026. Figures are indicative guides aggregated from published Australian sources, not quotes. Every project needs a written, inspection-based quote from a licensed contractor.
Before any underpinning quote, an independent structural engineer should inspect the property, confirm whether the movement is active, identify the likely cause, and specify the repair. This gives every contractor you approach the same diagnosis to quote against, so you compare like-for-like instead of comparing different contractors' different opinions of the problem.
Structural engineer inspection & written report
$700–$1,800
per report
Aggregated from published Australian structural engineering cost guides (2025 to 2026). A verbal site-visit-only assessment can run from about $400; a detailed investigation with subfloor access and level surveys can run higher.
This tool provides general educational information only, not a quote or professional advice. Figures are aggregated from published Australian contractor pricing (2025), Mainmark's published underpinning cost guide (2025), and published Australian structural engineering cost guides (2025 to 2026). Prices vary by property, contractor and region and change over time. Always get a written, inspection-based quote before proceeding.
Tell us what you are seeing and roughly where the property is. We will match you with a remedial or underpinning contractor serving your area.
Published 2025 guides put the common residential range at roughly $4,000 to $15,000, with the full spread across jobs from about $3,000 to $25,000, and major piling jobs reaching $40,000 to $80,000 or more. The method, soil, depth to stable ground, site access and extent of movement all move the price, so treat any figure as indicative until you have an inspection-based quote.
Resin injection is usually the cheapest and fastest option where it suits the soil and problem, because it avoids excavation. Mass concrete underpinning is priced per linear metre of wall, commonly $1,000 to $3,000 per metre (Mainmark's published figure). Screw piles and steel piers are priced per pier and typically run in the low thousands each, rising sharply if deep mini-piles are needed. An engineer's assessment, not price alone, should decide which method actually suits your footings.
Yes. Get an independent structural engineer's inspection and report first, commonly $700 to $1,800 for a written report. This gives every contractor the same diagnosis to quote against, so you can compare quotes on a like-for-like basis instead of on the contractor's own opinion of the problem.
No. It gives an indicative range based on published Australian cost guides, so you can sanity-check a quote you receive. Only a licensed contractor, working from a structural engineer's assessment of your specific property, can give you an accurate price.