House Underpinning: What Does It Cost?

You might notice some cracks in your walls and chances are, your house has problems with the foundation. The subsequent course of action for you would be to find out the extent of the damage and of course, know how much the total cost of repair will be.

Before you can calculate the cost of repair, you need to know first the extent of the damage. You may rely on two qualified experts to assess the damage and recommend a solution for you. – A concrete or another trade expert who specializes in underpinning. He can give an accurate assessment of the damage in your foundation and quotation on the extent of underpinning work required. Click here to find out more about underpinning your house and to get a quote from Restumping Underpinning Experts Melbourne. Located in Melbourne and with 25+ years of experience in the field, they can help you with the entire process.

– A structural engineer may inspect your home and will give you his or her engineer’s report. You can accurately rely on the report from the structural engineer since he or she does not profit from the work that needs to be done. However, this might be costly for you since you might shell out about $500-$800 for the assessment alone.

Once you have your structure engineer’s report, you can be confident now to ask for quotations from underpinners. Underpinning may be necessary when the foundation or structure of your home requires stability or strengthening. The cost of foundation repair usually depends on the underpinning work and extent of the service.

Types of Underpinning Work

underpinning a house

1. Mass concrete

This kind of work is suitable for heavy foundation loads and shallow depth underpinning. The ground below your house foundation is excavated in stages and then filled with concrete.

2. Beam and base

This is the underpinning work considered to be a technically advanced version. Mass concrete bases bear the building load, the size, and depth of which will depend according to the ground conditions.

3. Mini-piled underpinning

If your site is with the variable ground state, environmental pollution, or restrictive access, mini-piled underpinning is the type of repair needed. It is typically used when a considerable depth of foundation loads need to be transferred to stable soils.

4. Expanded resin injection.

A recent development of underpinning work which is less disruptive. Expanded resin injection involves a dose of hardener mix and structural resin into the ground that will chemically react so weak soil will expand and be made compact.  

Typical Cost For Underpinning Work

Repairing a simple crack in your wall and pouring concrete foundation may cost about $500 to $900, but will still depend on the extent of the damage. If you are in an earthquake prone areas, however, reinforcing the foundation may cost about $1,500 to $4,000. When poor soil condition is one of the factors to be considered in your foundation repair, you may need to install steel piers to support the foundation on a more stable and deeper soil. The cost will vary on the piers to be placed which may cost about $1,500 to $3,000 each. All repairs for a house with moderate foundation damage may cost you around $9,000 to $12,000 but can go as high as $25,000 to $35,000. Many home insurance does not cover underpinning work, but you can inquire if financing is available as a payment option.