Cost Of Underpinning

Cost of Underpinning


The cost of underpinning is dependent on the size of the structure and the linear meters of walls to be shored up, and soil profile.

Common Types of Underpinning:

  • Pier, brick/block/concrete/metal/screw piers
  • Contiguous boundary piers with capping beam
  • Continuous footing
  • Grout injection
  • Soil stabilization
  • Adjoining neighbours footing. As your new footing is going below grade of the bottom of neighbour’s then by law you are responsible for ensuring no damage to neighbour’s property.

In a domestic house type scenario You would expect to pay approx $1000 – $1200/ pier, about $1000 to $1500 / lin meter of continuous concrete footing installed, about $500/lin meter for soil strengthening using grout injection under existing footing + GST. Slab strengthening approx $500 to $700 / square meter. Providing you can get clear access for machinery

Establishment cost on site approx $1000 – $10,000 depending on type of equipment required, the distance from head quarters to cover transfer expenses of labour, machinery and materials.