Cost of Underpinning in Adelaide (2025 Guide)
How much does underpinning cost in Adelaide? This guide covers typical pricing for all major underpinning methods, the factors that affect cost, and how to get the best value.
Adelaide Underpinning Cost by Method
| Method | Per Linear Metre | Typical Total Cost |
|---|---|---|
| Mass Concrete | $800 - $1,500 | $8,000 - $20,000 |
| Screw Piles | $1,200 - $2,500 | $12,000 - $30,000 |
| Mini Piles | $1,500 - $3,000 | $15,000 - $35,000 |
| Resin Injection | $500 - $1,200 | $5,000 - $15,000 |
| Beam & Base | $1,000 - $2,000 | $10,000 - $25,000 |
| Restumping | $300 - $600 | $4,000 - $20,000 |
Factors That Affect Underpinning Cost
- Soil conditions — Reactive clay (common in Burnside, Mitcham, Unley) may require deeper underpinning
- Depth required — Deeper underpinning costs more per metre
- Access — Restricted access increases labour costs
- Wall length — Longer runs cost more but have lower per-metre rates
- Property type — Heritage and commercial buildings may cost more
- Council requirements — Engineering reports and approvals add $1,000-$3,000
Get a Free Quote
Want an exact price for your property? Request an on-site inspection and fixed-price quote — available across all Adelaide metro areas. Try the cost calculator for an instant estimate.
Underpinning Cost FAQ
The average cost of underpinning a house in Adelaide is $15,000-$25,000 for a standard residential project. Costs range from $5,000 for minor work to $50,000+ for full-perimeter underpinning.
Underpinning cost is calculated based on: the length of wall to be underpinned, the depth required, the method used, soil conditions, access difficulty, and whether council approval is needed.
Mass concrete (traditional) underpinning is generally the cheapest method at $800-$1,500 per linear metre. Resin injection is also cost-effective for suitable sites. Screw piles and mini piles cost more but are faster.
It depends on the cause. Damage from sudden events (burst pipes, storms) may be covered. Gradual subsidence from soil movement is typically excluded from home insurance policies in South Australia.