If you are a homeowner in Adelaide, there are many factors that can influence the cost of underpinning your home. JR Southern Underpinning, the leading underpinning specialist in Adelaide, has conducted a study of the major factors that can influence the cost of underpinning.

In this blog post, we will explore these factors in detail, providing you with the information you need to make informed decisions about your home’s underpinning needs.

The exact cost of underpinning a standard-size home in Adelaide can vary significantly, depending on various factors. These include the home’s size and structure, the damage’s extent, soil conditions, and the specific underpinning technique used.

However, to give you a ballpark figure, underpinning services in Adelaide can generally cost from $5,000 upwards. It’s important to remember this is a rough estimate, and actual costs may differ. Always seek multiple quotes and consult a professional for the most accurate estimate.

Factors Influencing Underpinning Cost

#1. The extent of your home’s foundation damage

The first major factor that influences underpinning cost is the extent of your home’s foundation damage. Homes can experience foundation damage for a variety of reasons, including weather, age, or ground movement. The severity of the damage will have a significant impact on the cost of underpinning your home. The more severe the damage, the more work that will need to be done, and the higher the cost. However, it is important to invest in underpinning services as soon as possible to prevent further damage and even more costly repairs down the road.

#2. Soil condition

Soil condition significantly impacts the cost of underpinning in Adelaide. Underpinning involves stabilising and strengthening the foundation of a building, and the condition of the soil can significantly affect the complexity of this process. For instance, loose or sandy soil could require additional support, thereby increasing costs. Similarly, clay soil, susceptible to expansion and shrinkage due to moisture changes, can create further structural challenges. Such complexities necessitate more resources, labour, and time, escalating the overall cost of underpinning. Understanding the nature of the soil is, therefore, a crucial factor in the cost estimation of underpinning services in Adelaide.

#3. Size of your home’s foundation

The third major factor that can influence the cost of underpinning is the size of your home’s foundation. The larger your foundation, the more materials and time it will take to complete the underpinning process. This will lead to a higher cost. Additionally, the complexity of your home’s foundation will also play a role in the cost. If your home has a unique or complex foundation structure, it may require more specialised equipment and skilled labour, adding to the overall cost.

#4. Method used to underpin your home

There are many different underpinning methods available, including pier and beam, screw piling, and slab jacking, each with their own unique advantages and costs. For example, pier and beam underpinning is typically more expensive than slab jacking, but it may be necessary in certain situations.

#5. Overall market demand for underpinning services

If demand is high, prices may rise accordingly. However, it is important to note that JR Southern Underpinning always offers competitive and fair pricing for their underpinning services regardless of market conditions.


Underpinning is a critical investment for any homeowner in Adelaide dealing with foundation damage. As we have seen, the cost of underpinning can be influenced by a variety of factors including the extent of damage, soil condition, the size and complexity of the foundation, the chosen underpinning method, and the overall market demand.

By understanding these factors, homeowners can make informed decisions about their underpinning needs and ensure they are investing wisely in the long-term health of their home.

For trustworthy and high-quality underpinning services in Adelaide, JR Southern Underpinning is your reliable partner – contact us today to assess your property.