Frequently Asked Questions

What is underpinning

Underpinning is the process of strengthening and stabilizing the foundation of an existing building or other structure.

Pro-pin also provides re-stumping services.

Re-stumping - also known as re-blocking is the process whereby timber stumps that support a house are replaced due to them being rotted and defective.

When is underpinning needed?

Underpinning is commonly required for:

  • Foundation failure
  • Subsidence
  • 2nd storey extensions on a single storey dwelling
  • Swimming pools
  • Cellars
  • Other types of excavation that require adjacent structures to be supported

What are the signs that I need underpinning?

Common signs that your home may need underpinning:

  • Cracking in brickwork and/or plaster
  • Gaps between brickwork and plaster
  • Gaps around windows and door frames
  • Uneven floors
  • Cracks in concrete slabs
  • Difficulty opening and closing doors and windows

What is the process and how long will it take?

Step 1 - Site inspection by one of our experienced team members who will then provide you with a quote.

Step 2 - Once you have accepted the quote we arrange a soil test.

Step 3 - Next  we contact our engineers to provide computations and design.

Step 4 - Then we organise a building permit.

Step 5 - Work can commence within 2-4 weeks of you accepting the quote subject to building permit approval.


Each job is unique and our expert will provide you with an indicative timeframe with your quote.

How much does underpinning cost?

Each job is unique. Please contact us for a free quote today.

Speak to an expert - call Alan on 0408 035 419.

How can I find out more information?

Call Alan on 0408 035 419 for expert advice and a free quote.