Cost of Underpinning Foundations

A weakening foundation can cause major structural problems with a house or building, such as unlevel floors or even a collapsed structure. Underpinning, a process of deepening the existing foundation to increase its load-bearing capacity, is often an effective solution. However, a number of factors can affect the cost of underpinning foundations. The most significant of these is the severity and type of damage to the structure. Other factors include the size of the property and the underpinning method used.

There are a variety of reasons why a homeowner may need to underpin their foundations, such as if the original foundation isn’t strong enough to support the building or if the soil properties have changed. It can also be necessary after a building or house is modified or expanded, such as when adding an additional story. Other reasons can include changes in the usage of a building, such as when it is converted to a rental property.

Underpinning can be done for both residential and commercial buildings, such as schools and offices. Some common signs that a building needs underpinning include visible cracks in the walls and floors, sinking or shifting of the foundations, and heaved foundations. Underpinning can be a cost-effective solution to correct these issues and restore the structural integrity of the building.

The costs of underpinning can vary greatly depending on a number of different factors, including the extent of the damage, the underpinning method chosen, and the location of the property. It is important to find a qualified contractor who will be able to provide an accurate estimate for the work that needs to be completed.

Conventional concrete underpinning involves excavating boxes underneath the existing foundation and pouring concrete to add depth. This is the most common underpinning technique and usually has a fast turnaround time. The structural consultant on site will determine the severity of the damage and choose an underpinning method that will best suit the situation.

Screw pile underpinning is a fast and reliable alternative to traditional underpinning methods, especially in challenging conditions where the soil is unstable or difficult to dig into. These galvanized steel screw pilings are driven into the soil beneath your foundation and then connected to the existing foundation with large galvanized steel underpinning brackets. This method doesn’t require excavating the existing footings and can be performed without vacating the building.

Chemical underpinning is a more advanced form of underpinning and uses special chemicals to help stabilize the existing foundation. This method can be more expensive than traditional underpinning methods, but is an effective solution for certain situations and can be completed quickly and without causing any disruption to the building or its inhabitants. This underpinning method can be costly, but is worth the investment in the long run, as it can prevent further damage to the foundations and the structure of the building.

Precise Restumping & Underpinning successfully maintains a reputation for delivering quality, reliable and sound services to clients all over New South Wales, with a licensed builder that personally oversee all works.